Thermal reflective film for glass. Heat-saving film for windows - benefits for your home! Insulation of plastic windows with heat-saving film: advantages
Thermal reflective film - roll material on a woven or non-woven base, reflecting infrared radiation towards the source.
To ensure coolness in summer, heat-reflective film on the windows will not let in sunlight in the infrared spectrum, but will not become an obstacle to natural light.
And to reduce heat loss in winter, energy-saving film laid around the entire perimeter of the room will reflect heat back into the room, preventing the walls and ceiling from heating up needlessly.
Types and applications of heat-reflecting films
The scope of use of heat-reflecting films depends on their type - transparent or opaque. Transparent films include polymer-based (architectural) films. They are used to create a thermal barrier on the windows of homes and offices, to shade car windows, and even to organize greenhouses.
Opaque films are quite diverse in structure and application:
| based on polypropylene fabric | differ in minimum thickness, therefore they are used for vapor barrier insulation in wall, ceiling and floor structures |
| based on foamed polyethylene | provide additional thermal insulation and can be used as heat-reflecting screens for batteries or insulation of pipelines |
| with lavsan heat-reflecting film | are the most economical option, but with a lower level of heat reflection, are used for vapor barrier of timber walls |
| with aluminum coating (metalized) | reflect heat well and are not subject to corrosion, so they can be used in baths and saunas, for vapor barrier in bathrooms |
| with aluminum foil | characterized by excellent heat-reflecting properties, but are susceptible to corrosion and are not recommended for use in rooms with high humidity |
What to consider when choosing heat reflective film
First of all, you should decide on the place of its application. So, to create a heat-reflecting screen behind the battery, you need to remember that the thermal conductivity of aluminum is very high. In order not to heat the wall behind the radiator, but to reflect the heat into the room, there must be an insulating layer between the film and the wall. The ideal choice in this case is films based on polyethylene foam.
They are also great for organizing heated floors, allowing you to minimize the thickness of the pie - for interfloor ceilings you won’t have to lay thick layer insulation, limiting ourselves to only heat-reflecting film. For such floors, it is better to choose films with aluminum foil. Its thickness of 10 microns will allow maximum heat distribution, removing possible cold bands when laying pipes. The sprayed layer copes worse with leveling the overall thermal field.
But if you need to insulate a bathhouse, it is metallized films that show excellent results. They are not subject to corrosion and reflect from 60% infrared radiation. Only canvas-based films can be laid on the insulation, and any options can be mounted on “bare” walls.
Film Ondutis R Termo - when it is important to keep warm
Thermal reflective film Ondutis R Termo is perfect for reducing heating costs. Thanks to its characteristics, it provides up to 80% heat reflection. As a result, instead of heating the walls, thermal energy is used exclusively for heating the premises.
The low weight of Ondutis R Termo vapor barrier (70 m 2 /g) allows it to be used for lung insulation frame structures, and vapor permeability up to 10 g/m2 per day provides maximum protection of the insulation from steam, even in a Russian bath. At the same time, the film does not lose its properties under temperature changes from −40 to +120 degrees.
Thermal insulation of plastic windows with thermal protection of the “third glass” film itself helps reduce heat loss from this structure in extreme cold. In this article we will consider the characteristics of thermal film, consider the strengths and weaknesses of this material.
At the end of the article, we will present video instructions on how to independently use energy-saving foil for additional thermal insulation of plastic windows in an apartment and in a private house.
Thermal film is the latest multi-layer material, each layer of material is no larger than microns and is coated with silver or chrome alloy. The metallized layer does not violate the capacity of the window, since its thickness does not exceed a molecule.
In this case, a layer of ultra-thin metal prevents heat loss from the living room through the double-glazed window in winter.
Due to the thickness of the layer, only a few molecules have thermal foil with refractive properties and allow the material to become an effective thermal insulator for a glass block.
Its unique structure reduces heat loss in winter and prevents heat flow through the window in summer, making it easier for air conditioners to operate. In the following, we will consider the advantages and disadvantages of thermal film.
Benefits of using thermal film
Comments about thermal film defects:
- The disadvantage is the ineffectiveness of the material in the spring, when the heating is already turned off, but there is not enough heat in the room;
- Once installed, all the inner containers on the window shelf will not receive enough UV material, which will negatively affect plant growth;
- Thermal insulation of plastic windows with heat-protective film is effective only if the manufacturer's recommendations are followed and they must be carefully studied.
Feedback about the advantages of thermal film:
- The material prevents infrared radiation from escaping from the space while the light transmission capacity is not affected, maintaining visibility through the double glazed window;
- Thermal window film prevents heat loss from the living room, saving you on home heating and air conditioning in the summer;
- The advantage of film for plastic windows is the absence of a reflective effect, and the one-way visibility of the glass will save you from the gaze of passers-by.
Thermal insulation of windows with thermophiles
Before installing the “third glass” film on a plastic window, you need to prepare tools such as a typewriter, scissors and a household hair dryer.
These simple tools are available in almost every home. It's easier to install together, but you can handle both the job and the job.
Thermal foil or thermal protection on windows?
For a detailed video on how to install thermal insulation film in an apartment, see the end of the article on the website.
Thermal insulation of plastic windows with your own hands
Instructions for Thermal Film "Third Glass"
- Start heating your attic windows from a small window.
The surface of the frame must be treated with a degreasing compound and dried. Additionally, double-sided adhesive tape is included on the double glazing rim;
- The film in the package is folded in half, it must be divided and cut out. Cutting is carried out in accordance with the size of the window, taking into account the fixation of the thermal film on the tape.
Check the dimensions of the film by attaching it to the opening of the windows you want to treat;
- Remove the protective tape from the tape and carefully adhere the foil to the double-sided tape. Ignore possible wrinkles, as long as the film is securely attached around the edge of the frame with double-sided tape;
- Hot air filter using a household or household dryer, the material will break down due to temperature.
Thus, the thermal film will increase and become completely smooth over the entire area.
Phase installation of thermal film on a window
Thermal insulation of plastic windows with shrink film
An important advantage of this material is that it increases the strength of the glass unit - the glass does not split into small pieces, which will reduce injuries.
The film can be insulated wooden and plastic frames, the performance of the material can be compared to installing a double glazed unit. The film reduces the transfer of heat energy from the warm space to the cold near the double glazing unit.
When windows are insulated for the winter, it is best to install thermal film in October and November. It is advisable to remove it in May, increasing the daily hours.
If the film is broken after an accident, don't disturb it - you can quickly repair the gap with regular tape.
Video. How to insulate a plastic window with thermal film
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Heat-saving mononolic film for windows is the most effective means for insulating windows with film and saving heat. Thanks to the material and composition
of which energy-saving window film is made, the windows have a reliable heat-insulating air chamber.
A kind of closed space is formed between the cold street and warm indoor air
Its working mechanism is as follows:
Thanks to the use of nanotechnology
the film is multilayer composite materials each layer is so thin that it is practically visible to the naked eye
each layer is covered with a protective ultra-thin layer of metal, which contains a micro layer of silver and nickel alloy
the thickness of the metal does not exceed several molecules; in winter they reflect heat back into the apartment.
Such films do not interfere with visibility and throughput light, while energy saving is carried out at a high level.
The unique structure is achieved by following a strictly regulated manufacturing process
(strict adherence to the required temperature, pressure) and the addition of various components to the material.
Prevents loss of thermal energy in winter time, keeping optimal temperature indoors.
With the help of mononolic film it is possible to insulate any type of window. Third glass.
Does not contain harmful components, environmentally safe for health.
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Repair and finishing of the entrance includes: - Repair of plaster (cleaning, priming, puttying walls and ceilings); -VEC complex ( water-based paints) spray gun; -Painting of walls, window and door blocks, railings, stairwells, mailbox...
for 50 UAH.
Energy-saving film on windows - does it help?
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What is the film and how does it work?
When is the film based?
Negative Aspects of the Movie You Should Know
Installation rules
Conclusions and questions that ultimately arise
video
When looking to save energy, consumers are looking for new Construction Materials, which will help save heat in a house or apartment.
A special place in this line is occupied by fire-resistant film for windows, which reduces energy consumption by 30 percent.
How useful is the use of this material, and what functions, besides saving heat, does the film have?
What is the film and how does it work?
The basis for the production of heat-saving film for windows is the polymer polyethylene terephthalate (PET).
Its thickness, which affects the effectiveness of the product, can be 80-200 microns. The film has high elasticity and therefore can increase the strength of window glass. This means that in case of accidental impacts, glass windows do not break into pieces, they remain “attached” to the film.
But this is not the main thing in using thermal film.
It affects it with a thin layer of plasma evaporation from gold, silver or chromium and nickel and subsequent vapor deposition in an argon environment. The basis for the production of film is the physical properties of these metals, which allows filtering solar radiation. The film does not emit infrared and ultraviolet waves, but perfectly transmits visible light.
That's why the room stays bright. The fact is that infrared rays are responsible for heat transfer. The film refines them and returns them to the room, they store the heat accumulated in the room. At the same time, UV elements of the solar spectrum do not penetrate into space.
For reference.
The sun's UV rays are ionizing properties and are essential for the human body to promote the development of vitamin D. Indoor air UV from harmful microbes involved in the process of photosynthesis in plants.
The price of energy-saving film directly depends on the degree of thermal conductivity and installation method. In fact, the film is made in rolls and can have different sizes. For standard window apartments, it is appropriate to have a three-month window to avoid confusion.
The excess can be turned off.
When is the film based?
Manufacturers of thermal insulating films for windows are recommended to use them for bonding on windows, houses, houses in the fall and winter, from October to March. During this period, it is justified to protect windows from heat leakage. The sun's rays typically enter a room with little or no heat, so reflection of the UV portion of the solar spectrum is not required. The film is completely transparent and does not stain the windows.
Infrared (warm) rays coming from heating devices are reflected from windows to the room, they store heat.
The effectiveness of the film depends on the method of gluing the glass.
Films are available in the following forms:
- Thermal shrinkage. You have the ability to stretch when heated using warm air flow. Since the film is attached to double-sided adhesive tape, it acts as additional glass, which enhances the insulating properties of the glass unit.
- A film glued to glass using a soap mixture.
- Self-adhesive film.
For reference.
Removable film is available in the most different colors: bronze, gold, blue, silver. Therefore, it is easy to choose the interior of the room.
Negative Aspects of the Movie You Should Know
Since the film almost completely reflects UV rays, home plants, whose growth is directly dependent on the Sun, begin to suffer because of this.
In addition, the plants are not lost, it is also necessary to light them with photo lamps. This means that this problem has been resolved. Where is the energy saving? The camera should be turned on for at least 12 hours a day to ensure normal plant growth and replace less sunlight. They do not save even the most economical lamps.
What happens to thermal energy if the film is used in spring and autumn, when the heating is already turned off? Since the film does not allow natural solar heat to penetrate from the street, the humidity in the apartment will stabilize and it will be cold.
Few people know about one film - it reflects radio waves. This means that radio signals entering the internal antenna or mobile phone, are reflected by the film coating. And vice versa: the signal from the mobile phone will be reflected back into the room.
Conclusion: Cellular service in buildings where the film is attached will be very poor.
Do not use greenhouse or greenhouse film because plants need full spectrum sunlight.
There is no point in bringing in a movie if the apartment has modern windows with high quality thick double glazed glass.
However, when replacing old windows, this will, on the contrary, be a good help. You must also consider the fact that the film needs to be changed every year.
Thermal film on windows
Advice. When purchasing a film, it is advisable to inquire about the certificate of quality, because it cannot be visually recognized.
Installation rules
Procedure of normal film bonding method:
- windows must be thoroughly washed, degreased if necessary and wait until they dry;
- dilute the soap solution (you can use clear shampoo or dishwashing liquid);
- Cut the film to the size of the window;
- Apply the soap solution to the entire surface of the glass using a household spray;
- carefully apply the film to the glass;
- spread the foil using a rubber roller, gradually removing excess soap solutions and large air bubbles.
Small bubbles and wrinkles are dried out as the soap dries.
Shrink film glued:
- Prepare the glass (rinse, dry);
- Cut the film size 2 cm larger than the glass surface;
- We attach double-sided adhesive tape to the periphery of the window glass;
- start gluing from the top, peeling wrinkles and wrinkles;
- then blow the surface of the coated film with hot air using a hairdryer.
Shrink films are often used on a balcony or loggia because they act as a second or third pane of glass.
The key is to keep the cling film in place slowly. The protective layer is gradually removed and smoothes the soft tissue from top to bottom. Here you also need an assistant to help tighten protective layer.
Advice. Preferably, the window is glass at room temperature.
This will greatly facilitate and improve the installation process.
Conclusions and questions that ultimately arise
If we are aware of the shortcomings of the film, we can say that its use is justified in cases where it is necessary to save heat, but it is impossible to do the job in case of major heating of a building or building.
Many consumers value the quality of the film, such as protecting the space from prying eyes. At the same time, from room to street, visibility remains 100%.
Windows don't always have heavy curtains or curtains. The film fits perfectly into every interior without disturbing it.
However, the film does not radically affect energy conservation. Therefore, before you stick it on, you must decide what is more important: the effect it gives, reflecting the heat back into the room or the life-saving ultraviolet rays that the film does not leave in the apartment?
Perhaps it is worth considering other heating methods, for example, for installing thermal windows or reinforcing walls with thermal insulation materials? And if it is used in summer to protect from sunlight?
To be objective, it must be said that the properties of thermal film are improving every year. Manufacturers are trying to take into account all the nuances of their use, thereby increasing the performance of the product.
detailed information
Heat-saving film for windows - the fastest, most effective and affordable way increase the room temperature by 3...8C!
WHERE DOES THE HEAT GO?
It is a well-known fact that any residential building gradually loses accumulated heat.
In particular, it is through glass that a quarter of all the heat produced by your radiators and heaters escapes.
The reason for this is the laws of physics! Have you ever noticed that a tightly closed and sealed window draws in coolness?
This may seem strange if you do not know the principles of thermal conductivity and convection, namely heat exchange in the air, which occurs due to the movement of gas flows of different temperatures.
This is exactly what happens when you supposedly feel a draft - cold air from the street cools the glass, which in turn cools the air inside the room.
What happens - the window does not seem to create drafts, since it is sealed, but still lets the cold into the room?
Not the most pleasant fact, you will agree.
HOW TO SAVE HEAT?
We are offering to you optimal solution Problems. Namely, heat-saving film!
Everything is very simple! If the glass is cold, cut it off with a layer of transparent film!
The film is glued around the perimeter window frame using double-sided tape, thereby creating an additional air chamber.
Films for window insulation: application and operating instructions
Due to the transparency of the film at 97%, it is absolutely invisible on the window.
The principle of operation of the film is similar to the effect of a thermos - due to the high coefficient of resistance to thermal conductivity, the film, firstly, prevents the penetration of cold from the street into the room, and secondly, does not allow the heat created by batteries and heaters to evaporate into the street.
As a result, already 3 hours after applying the film, a significant result is felt in the room - an increase in temperature by 3...8C without additional heating, which significantly reduces energy consumption!
In houses with large area windows, savings on heating can reach over 30% in winter, and in summer - on air conditioning.
This improves sound insulation.
The film is absolutely harmless to the human body, since it does not contain harmful compounds and does not emit any dangerous fumes during operation.
Moreover, film similar in composition (but not in density and thermal conductivity!) is used in the food industry for packaging dairy products and baby food, which indicates the highest level environmental friendliness of products.
In addition, the thermal film prevents the formation of condensation and ice on the inner glass, which in turn prevents the occurrence of mold and mildew.
BONDING PROCESS.
The entire application process takes a minimum of time and consists of the following steps:
1.
degrease the window frame and, if necessary, wash the glass itself;
2. Apply double-sided tape around the perimeter of the frame;
3. measure and cut necessary element films;
4. evenly stick the film onto double-sided tape;
5. warm up as usual household hair dryer until completely straightened.
Everything is very simple and cheap!
Window Forum: Energy Saving Films - Truth or Myth? — Window forum
Does not meet the specified parameters
It's hard to work with film. I have them wooden windows and I decided to conquer thermal film. It's hard to glue alone. It separates along the seam when heated with a hairdryer, and after gluing it reacts to temperature changes - it contracts when heated and comes off. However, the effect is present: after gluing, the temperature rose by 3 degrees, the glass stopped leaking.
Like an ambulance
a new solution, a well-forgotten old method
Budget fixing of an apartment The temperature in the room, according to the manufacturer, does not rise by 8 degrees. Hello to all readers of the site. Today I want to talk about last year’s purchases. Namely, “third glass” thermal film, I bought it last fall to insulate my apartment. Before buying I read a lot of good and bad reviews on the Internet.
But I still decided to buy. I bought it online. I found the site, placed an order, and it arrived in a few days. It cost me 200 UAH, together...
Window film for heat preservation is a thin film material that reflects infrared radiation. Reflectivity is achieved through metal spraying. The base for the film is polyethylene terephthalate. This is a fairly durable plastic that resists tearing well. Thanks to this, it provides additional protection for the glazing.
Special phytolamps will help compensate for the lack of any part of the spectrum - make sure that they are equipped with ultraviolet LEDs. Without them you won't get the full spectrum.
The metal coating applied to the heat-saving film reflects infrared radiation in reverse side. If it comes from outside, it is reflected outward, if from inside, then inward. In the winter season, IR rays created by heating devices will be reflected from the glazing and remain indoors. In the summer we will observe the process of reflection of solar IR rays towards the street. The rooms will be warm in winter and cool in summer.
At the same time, the heat-saving film prevents the penetration of solar ultraviolet radiation. There is nothing critical for a person in this regard, although his skin is accustomed to perceiving the entire solar spectrum. As for plants, they may react by wilting. They need the full spectrum to stay green and produce offspring. If you are engaged in plant growing, select a window without film for green spaces.
Film behavior in the off-season
The summer heat is gone, the sun is weak, but the heating is not working yet. People want comfort - they need to turn on the heating, although it is still very early. And in this situation, heat-reflecting film on windows becomes a disadvantage. The thing is that it does not transmit infrared radiation, which could provide a little free heat. And in the spring and autumn periods it would come in handy.
There are two ways out of the situation:
- Turn on full heating at least to a minimum so that the house is not damp and cold.
- You can use electric heaters, but in this case you need to be prepared for high energy costs.
What to do is up to you to decide.
How does thermal film work at home?
Due to the polyester that underlies the window insulation and the presence of an argon mixture in the structure of the film, in winter it prevents the passage of cold and wind into the room, and in summer it keeps it cool and limits the entry of ultraviolet sunlight into the room.
If your house has multi-leaf windows, then it is better to glue thermal film to the outer frame or both frames at once.
Single-layer films are much cheaper than those with a thicker structure. Even when using the first option, the glass of the window frame becomes stronger, and therefore it will be more difficult to subject it to mechanical stress.
Good to know! With the film installed and the usual heating method, the room temperature rises by 5°C.
Do-it-yourself window insulation
There is nothing complicated in the process of finishing a window with film - not only a qualified specialist, but also the owner of the house can handle this task. No special skills or tools are needed, but some rules must be followed.
Required materials and tools:
- film;
- special colorless double-sided tape;
- roulette;
- long ruler;
- pencil or marker;
- construction knife or scissors;
- cotton gloves;
- regular hair dryer;
Step by step guide:
Initially, you need to make sure that there are no cracks in the window frame. In plastic windows this unpleasant nuance practically does not occur, but in wooden windows it may be present.
Wooden windows contain frames in their design, which entails the presence of many joints through which cold air can pass through. For high-quality sealing of seams and other cracks, transparent sealant or silicone is used.
You can proceed with further actions only after they have completely dried:
- The inside of the window frame needs to be washed. To do this, you can use household chemicals or soap solution.
- Afterwards, the frame is treated with degreasing agents (preferably ethyl alcohol 96%).
- Double-sided tape is glued along the edge of the frame (along the perimeter).
- Next, the film unfolds on a large table. If it is folded in half, it needs to be stratified. To do this, it is advisable to blow on the joints. Holding the two edges, it gradually separates.
- It is necessary to measure the horizontal and vertical dimensions of the glass unit in advance with a tape measure.
- The recorded indicators are transferred to film, with a tolerance of 1.5-2 cm for attaching it to tape.
- You can cut the material with a knife or scissors, because it is very pliable to cut.
- The protective paper layer is removed from the adhesive tape attached to the frame.
- First, the cut out area must be leaned against the top horizontal plane tape and press firmly.
- Next, you need to pull it a little and press the edges of the film against the vertical strips of tape.
- In the lower part, the fastening process is identical to the previous ones. Thus, the film is fixed in the desired position and is ready to serve for a long time.
- Before completely sealing the window with film– It is necessary to wash the glass thoroughly.
- So that no traces remain on the canvas(fingerprints or other contaminants), work must be carried out with cotton gloves.
- If folds appear on the surface of the material during the process– this can be fixed with a regular hairdryer. To do this, it is necessary to spray the film with a stream of hot air escaping from it - which causes shrinkage.
- During the film gluing process– it is not recommended to pull it too hard, because the surface may burst. And it is almost impossible to repair it, unless you stick a strip of tape, but over time the defect will become noticeable.
- If the window is big enough– It’s better to do the work together.
- Do not allow the film to sag or touch the glass.– this will not result in good heat conservation.
How to save heat in a room or prevent it from overheating
To make the temperature of an apartment or office comfortable for a person, the following measures are usually used:
- install modern double-glazed windows;
- equip the premises with adjustable radiators;
- connect additional electric heaters;
- seal window cracks with polyurethane foam;
- insulate external and internal walls;
- In hot weather, air conditioning is installed.
These measures are expensive and require a lot of energy. Is there an alternative? You can go by increasing the amount of heat, or you can take measures to keep it inside. Research shows that indoors the largest amount of heat is lost through window glass, and how larger area window openings, the greater the losses.
In winter, these losses reach up to 70%. In order to avoid heat loss through glass windows and doors, measures must be taken to increase the thermal insulation of glass panels. Heat-saving film for windows will help us with this.
Photo through a thermal imager
Monanolic film is made from a number of layers and components. The thickness of each such layer is several millimeters. The surface of the thermal film has a coating consisting of an ultra-thin metal layer. It can be gold, silver or it can be made of nickel.
Due to the fact that the thickness of the film is only a few millimeters, light can easily pass into the interior of the room. You can save your cash on energy, and heat loss will be significantly reduced.
Also, due to its small thickness, heat-shrinkable heat-reflecting film for windows has a refractive effect, and the low-emissivity membrane becomes an excellent insulation material. Thanks to the unique structure of the material, heat loss is significantly reduced in winter, and it also maintains best temperature inside the room, and in the summer this product does not allow warm air flow to penetrate. Therefore, the room will always maintain comfort and coziness.
Which manufacturers offer heat-saving film and what are their prices?
When choosing heat-saving films, you need to take into account that inexpensive types of this product create only an air layer (third glass effect), while expensive types, for example South Korean Ultra Solar Block, - in addition to thermal insulation, they prevent infrared rays from penetrating into the room, which helps reduce cold in winter and heat in summer. Different kinds heat-saving films are produced in Germany, Poland, South Korea, China, Turkey, Russia, Ukraine. Online stores offer the following brands: “Thermo Tap”, “NANOFILM”, “Ultra Solar Block”, “ESB Technologies” (Russia), “Heat Technologies” (Poland). German and Polish brands are usually more expensive than domestic goods. The larger the size of the canvas, the cheaper the product will cost. The film is sold in rolls or in sheets folded in half. Films may have self-adhesive backing or stick to a soap solution. For a window measuring 1400 by 1300 mm, you need to purchase approximately 1.82 m2 of film and 5.5 m of tape. As a result, Polish film will cost 150 rubles for 1 window.
Experts believe that even a thin gap the size of the eye of a needle can cool a room in just a day in the absence of regular heating. To prevent this from happening, use “third glass” thermal film, and we offer a few tips for this.
- Carefully inspect the window frame for damage. When trying to insulate glass embedded in a wooden frame, the question often arises as to why the film does not retain heat. Most likely, the problem is not in the glass, but in the lack of tightness of the frame itself. Therefore, this point must be taken into account immediately.
- You can also insulate doors with a heat-resistant layer of glass. window openings. They fit perfectly in the middle of the frame. Even if the bags are plastic, they need to be prepared. If the door is installed in the kitchen or dining room, it is recommended to degrease it first.
- It is necessary to achieve a perfect fit of the thermal film to the glass in order to prevent the formation of an air cushion. To do this, remove the glazing beads from the frame, place the insulation and put the fittings back in place.
The insulating agent is successfully used as additional insulation for greenhouses
The proposed tips have been successfully applied in practice; accordingly, the effectiveness of the “third glass” as insulation has been fully proven. Dear users, if you still have questions, ask them in the comments - we will be happy to discuss all points of interest.
The film is used in rooms where double-glazed windows are not installed. It forms a special bag. It is in some way analogous to the space located between the panes of a window. Double-glazed windows provide protection against cold air entering the room. The technology is based on the fact that internal warm air will not come into contact with external air. Heat-saving film should be used in the following cases:
- it is necessary to increase the heat level without energy consumption;
- There are huge windows in the room, occupying most walls;
- sudden changes in temperature must be avoided.
The use of thermal film, which is glued to glass, is advisable only for double-glazed windows
Installation of thermal film on window opening creates a similar chamber if the window has only one glass. At the same time, if there are serious cracks in the frames, then the film will not bring any benefit at all and heat leakage will continue.
In addition, you need to remember that at least some effect can be expected only when correct installation films. If the recommendations for its installation were not followed, and there are serious flaws in the window frames, then it is unlikely that there will be much benefit from using this product. Before installing thermal film or using any other means, it is best to consult with a specialist to ensure everything is done correctly.
Advantages
When glued to plastic windows, such a film increases the strength of glass to an average of 8 kilograms per square centimeter.
Wherein broken glass does not shatter into small fragments, which significantly reduces the risk of injury.
In addition, such a film allows you to save money, since by gluing the film onto a single-chamber double-glazed window, the effectiveness of such a package is equal to that of a double-chamber one.
Additional advantages of heat-saving films include:
- making it difficult for intruders to penetrate;
- protection of interior items from exposure to direct sunlight;
- Blocks 99 percent of ultraviolet rays, which often cause burnout;
- blocking of infrared radiation within 30-99%;
- imparting confidentiality (protects against information leakage through electromagnetic and vibroacoustic channels);
- giving the glass one-way visibility.
Very important point The use of films is their correct and competent installation, which should only be done by professionals, since this process is very painstaking. At incorrect installation all the advantages of the film are lost.
What is thermal film and how it works
The technology for the production of heat-insulating material is based on the physical characteristics of sunlight, consisting of UV and IR rays. Thermal film is complex design, consisting of several layers of polyethylene terephthalate, the thickness of which reaches 80-200 microns. Each layer has a thin metal coating applied using a plasma discharge method in an argon atmosphere. Silver, gold, as well as nickel and chromium alloys can be used for coating.
Thanks to a special application technology, the metallized layer does not interfere with the entry of visible spectrum rays into the room and changes the light transmittance of the film due to their refraction. Infrared rays carry out heat transfer, and the thermal insulation material, by refracting, reflects them inside the house or apartment, resulting in a heat-saving effect. The material reflects UV rays, which make up a significant range of the spectrum of sunlight, preventing them from penetrating into the room.
The high ductility of the thermal insulation film glued to the surface of window glass significantly increases its strength. In addition, if it is broken, it will not crumble into small fragments, but will remain on the film. However, the protective properties are more likely by-effect, since it is designed to save energy.
Operating principle of energy-saving coating
Low-emission energy-saving film
When installing energy-saving film on a window, the room becomes much warmer. It prevents wave radiation from cooling inner space through glass and thus retains up to 42% additional heat.
IN spring-summer period a window on which a heat-saving film is installed prevents the room from overheating. This coating on the glass blocks the penetrating thermal rays of the sun. These qualities of the film make the window a real heat insulator throughout the year.
This effect is achieved due to physical properties refraction of sunlight. Thermal reflective films are produced according to special technology only by manufacturers from the USA (4 are produced in the world).
Low emissivity films have main characteristic– emission coefficient, i.e. the ability to re-emit energy. The lower the value of this coefficient, the more effectively it retains heat in the room.
According to our measurements, not a single film, except Ecolux70, provides a noticeable heat-saving effect on double-glazed windows. A slight effect is visible with a thermal imager only on single glass.
Only 3 films in the world give an effect on a double-glazed window: Ecolux70 from SolarGard, Enerlogic from LLumar and Thinsulate from 3M.
Energy-saving film is an effective heat insulator in winter and summer.
When is heat-saving material used?
Many manufacturers advise installing thermal insulation material only during the heating season - from October to March. At this time, the effectiveness of such protection is felt. Sunlight penetrating through the windows does not carry heat with it in winter, so the reflection of ultraviolet rays will not cause discomfort, since thermal films are completely transparent and do not have a tinting effect. At the same time, IR radiation from heating devices, on the contrary, is reflected from the film and remains inside the apartment or house. This is precisely the heat-saving properties of thermal film.
Heat-saving material comes in two types: heat-shrinkable (the most common option), which stretches under the influence of warm air from a regular hair dryer, and installed using soap solutions. Thermal protection of the first type, glued to the window frame using a special tape that has an adhesive layer on both sides, also serves as a “third glass”. In this case, an air “pocket” appears between the heat-saving material and the glass, similar to what is inside the double-glazed window, and this creates good protection from heat loss.
Operating principle of thermal film
Visually, thermal film looks like simple polyethylene, but in fact it is polyester, which has a very thin coating of metal or ceramics. To deposit this layer, a flame discharge in an argon atmosphere is used. Thanks to this, the film can trap warm air in the room in winter, and in hot weather it will reduce the heating of the room.
Experts believe that thermal insulation film can increase the temperature in a home by approximately 3-5°C.
Thermal film price may differ significantly, and the difference will lie in its properties. The cheapest options will operate on the principle of a thermos, and serve as a third glass, but will not protect against infrared radiation.
Expensive film can not only reduce heat loss, but also protect against ultraviolet. It will also protect the glass from mechanical stress - break the glass it will be much more difficult.
Thermal insulation of PVC windows with thermal film
PVC windows, which have an additional thermal insulation layer as a heat-saving film, are the most durable. Even if there is a strong blow, the glass will not shatter into small pieces, but will only be deformed. This ensures maximum safety. Insulation of plastic windows is also carried out in some cases.
Although the windows have plastic frames, they are additionally insulated with rubber seals, the glass still allows cold air flow into the room.
Even owners of double-glazed windows will not be able to obtain ideal thermal insulation. Therefore, in this case, it is most appropriate to use film as a “third glass”.
Installation instructions for thermal film
- Instructions:
- Most thermal films have a self-adhesive backing, but some products will stick to the glass due to certain adhesive conditions.
- Before installation, the glass surface must be prepared. Preparation includes thorough window cleaning. After you have washed them, do not forget to dry them. Additionally, use a degreasing solution for treatment. After this, the installation procedure of the heat-saving film begins. Apply it carefully; when wrinkles appear, you need to smooth them out using a soft rag. Or you can use special tool
- , which is similar to a car windshield wiper.
What is third glass film?
Correct installation of thermal film
There are several ways of gluing heat-saving material, depending on the type (heat-shrinkable, adhesive-based, or mounted using a soap solution). Thermal film is sold in rolls or sheets. Regardless of the installation method, you will still need an assistant.
Soap solution
First of all, you need to wash the glass cleanly and wipe it dry. Next, use a household sprayer to apply a soap solution to the surface, which can be prepared from colorless baby shampoo or dishwashing liquid. Apply a film pre-cut according to the well-moistened glass required sizes. First, the upper edge is glued, and then using a soft scraper for washing windows or a rubber roller, excess soap solution is squeezed out from under the film (first of all in the middle - from top to bottom, and then from the middle to the sides). Try to avoid the formation of large air bubbles, since the film does not adhere to these areas. Small defects will disappear on their own and the material will straighten out completely.
Wash the window and apply soapy water
Installation of self-adhesive film
The self-adhesive film is installed in almost the same way as in the previous version, but with some minor differences. The protective layer is not removed immediately, but a small strip is peeled off from above. Having glued the top of the canvas, you need to smooth the film with a soft, clean cloth, avoiding the formation of bubbles and wrinkles. At the same time, an assistant should slowly remove the protective layer. You need to act slowly, since it will not be possible to re-glue the film without defects.
It is better to stick heat-saving material together with a partner
Gluing shrink film
Installation of heat shrink material differs from the options described above. To do this you will need: scissors, a knife, a regular hair dryer and, of course, an assistant. If you have old wooden frames, then you need to seal all the cracks with foam rubber. Ideally, you can dismantle the handles and stick thermal insulating material onto the window frame. Next we proceed according to the following algorithm:
- stick double-sided tape onto the washed and dry frame;
- cut the heat-saving material to the size of the window, adding at least 20 mm on each side;
- remove the protective strip from the double-sided tape;
- slowly glue it thermal insulation material on adhesive tape and don't worry about creases;
- Since the heat-saving material is heat-shrinkable, to give it the necessary smoothness and transparency you need to blow on its surface using a regular hairdryer. Initially, you should not pull the film too tightly, after which it will reach the required tension;
- If the film has been damaged during use, do not rush to throw it away, since it can be easily restored using ordinary transparent tape.
After heating with a hairdryer, the film acquires the desired tension and transparency.
Instructions for installing thermal film on glass
Insulation of windows and other glass surfaces is very important stage, which determines how warm the room will end up. Let's take a closer look at the mounting instructions.
- We will clean the window from dirt and wash away all the residues. detergent and be sure to dry the glass.
- Next, we glue double-sided tape around the perimeter inside the window frame, then remove the protective film on the top and apply the edge of the thermal film there.
- First we bifurcate the “third glass”, since it is sold folded in half, and cut it to the size of the glass.
- Using a soft rubber spatula, smooth it from top to bottom, while simultaneously peeling off the adhesive tape little by little and blowing the surface with a household or construction hair dryer.
- When finished, check the entire film for bubbles. If they are missing, the work can be considered completed.
Under no circumstances should you peel off the protective layer of double-sided tape completely when gluing the film. After all, the film can stick tightly, after which it will be problematic to peel it off.
Thermal film is environmentally friendly, therefore suitable for installation in a children's room
Types of thermal film
In more severe climates, the film greatly improves heating efficiency. There are two main varieties, specially designed for insulating buildings: the first type is glued directly to the surface of the windows, and the second is attached to the window strips. The latter are considered much more effective, although they do not have a very good effect on appearance window.
There is no need to carry out any work on a high-quality double-glazed window. additional work. It perfectly protects the room from the cold, so the film is used only in those buildings where the quality of window installation leaves much to be desired or where insulation is carried out based on the climatic characteristics of the region.
Installation of thermal film is usually not carried out in houses with double-glazed windows located in the temperate zone or in the south.
Below is a video from which you can learn about all the pros and cons of insulating window blocks with thermal film:
Adhesive film
Thermal film for window insulation, adhesive directly to the glass itself, is practically invisible to others. Besides, there will be no glue stains left. Manufacturers claim that this film works in a special way: it reflects ultraviolet and sunlight. Thanks to this, during severe cold weather the material slightly retains heat inside the room, and in summer it will prevent the house from overheating.
Read also: .
Heat-saving film can save windows from condensation
Sellers often lie when they claim that in spring this material allows heat to pass through freely, but the energy of the spring sun is not enough to warm up the room well. And the manufacturers themselves warn about the rather low effectiveness of such a product: leakage will decrease by only 7%. This means that you are unlikely to have a strong effect on the room temperature. It is best to use this film as an additional tool.
IN spring time, When central heating will be disconnected, the premises will not be received required amount heat. It will become damp and cold inside.
The installation instructions for heat-saving window film do not recommend using it to build greenhouses or greenhouses. This can be explained very simply: almost all types of plants need to receive infrared and ultraviolet radiation for normal growth.
For this reason, using film on windows can have a very bad effect on all plants placed on the windowsill. This is a huge minus for all lovers of flowers and other flora.
Advantages and disadvantages of heat-saving material
The use of thermal film has a lot of positive qualities, among which it is worth noting:
- Strengthening. Heat-saving material increases the strength of glass up to 8 kg/cm². When broken, the glass does not crumble into fragments, but remains glued to the film.
- Saving. After gluing the film onto a single-chamber double-glazed window, its energy efficiency becomes comparable to a two-chamber design.
- Protection of interior items from fading.
- Almost 100% UV blocking.
- Blocking IR radiation within 30-99%.
- Depending on the type of material, one-way light transmittance.
Thermal film protects well from sunlight and retains heat
However, thermal film also has disadvantages. The most basic is the almost complete reflection of ultraviolet rays, which negatively affects indoor plants. Therefore, if you use heat-saving film, then provide your plants with additional lighting photo lamps that provide the radiation spectrum required for their normal growth and development.
The second drawback is the lack of effectiveness in spring and autumn. During the time when central heating has not yet been launched, the thermal insulation coating will prevent the penetration of heat from the sun's rays into the room.
The film also has the unpleasant property of reflecting radio waves, which can affect the quality of signal reception going to a mobile phone or television receiver. This is due to the fact that metal spraying is used in the production of thermal insulation film.
Since thermal film blocks UV rays, ornamental plants on windows need to be provided with additional lighting
Advantages and disadvantages of thermal film on windows
A dense protective layer of film is one of the main properties that is responsible for the functionality of the device. In addition, it is advisable to highlight a number of advantages of the thermal layer:
- ease of repair. For example, if you accidentally damage the integrity, you can simply hide the gap using stationery tape;
- washes well when necessary and does not react to the use of household chemicals;
- does not contain inert substances static electricity materials, therefore, there will be virtually no dust accumulation on the surface;
- the film adheres reliably even to frosted glass, and if it is damaged, the fragments remain directly on the insulation, which is absolutely safe for humans;
- “third glass” creates visibility through the window only from the inside, so it perfectly saves you from unwanted views from the street.
Thanks to the thermal film, there is no glare on the windows in bright sunlight, which is convenient when watching TV
Like any product used in everyday life, thermal film also has some disadvantages:
- if it is not fastened correctly, the film begins to inflate and fly away from the glass, letting in cold air;
- when the heating is turned off, the windows begin to sweat, since the protective layer interferes with the natural ventilation of the window frames;
- It is not recommended to install it on windows with thermal film. houseplants, since they will begin to die, because they will not receive the required amount of ultraviolet radiation.
As you can see, there are more advantages than disadvantages; accordingly, using film as a third glass will be more rational than purchasing a three-layer double-glazed window.
When using thermal film you do not need blinds, since artificial glass opaque
Good to know! It is not recommended to stick the film before heating starts, otherwise the thermal protection will sag and you will need to adjust its position on the window.
Let's find out one way to make your home or apartment warm. Maintain the desired temperature in living rooms Thermal film on windows will help you save on heating costs.
On the eve of cold weather, many owners of houses and apartments are thinking about insulating them. Creation comfortable temperature in living rooms, saving on heating is an important task. One of the options for solving them is to use thermal insulation film, which is glued to the double-glazed window. Experts say that windows account for about 60% of all heat loss in a home. Moreover, even if the profile of the double-glazed window is of high quality, the installation is carried out correctly, the slopes are hermetically sealed and insulated, the glass itself still accounts for up to 30% of heat loss. A thermal imager will help you make sure this is true.
Thermal insulation film
- Functions
- Price
- Sticking
Functions
But many homeowners, even without a thermal imager, decide that the glass needs to be additionally protected from the cold! For this purpose, energy-saving, also known as thermal insulation, athermal films are used, which are often called “third glass”. After all, they perform precisely the functions of additional glass, becoming a barrier to the entry of cold into the room and the leakage of heat from the house.
Important! Yes, you can immediately buy triple-glazed windows, energy-saving, designed for severe frosts. But thermal film will definitely cost less. That is why it is in demand among owners of apartments and houses who have ordered double glazed windows.
Remember how many homeowners used to simply board up their windows from the outside plastic film for the winter? Yes, it didn’t look very nice, you can’t open the window in winter, the street is practically invisible, but this measure helped reduce heat loss through the old wooden windows. Thermal films operate on the same principle and look similar to ordinary polyethylene films. However, they are easier to use, they are attached from the inside, they do not interfere with the ventilation of the rooms, and they do not block the view from the window.
Describing the varieties protective films on windows, we mentioned energy-saving ones. Thermal insulation film, despite its external similarity to ordinary polyethylene, is in fact a polyester sheet on which an extremely thin layer of metal or ceramic is sprayed.
It is thanks to this layer, which is applied using the flame discharge method in an argon atmosphere, that the thermal film gains the ability not to release warm air from the house in winter, and in summer - do not allow the room to heat up excessively. According to experts, energy-saving film on a window can raise the room temperature by at least 3°C.
Price
The cost of thermal films for windows can vary greatly. Can buy square meter such a protective coating for 50 rubles, or even 500 rubles. The difference is in the properties of the film itself. The cheapest thermal films can hardly be called truly energy-saving; they create the effect of a thermos, serve as a “third glass”, but do not protect from infrared rays.
The second advantage of expensive options is that such films combine several functions. They not only prevent heat loss, but also protect against sunlight and ultraviolet radiation. They are also part of the anti-burglary protection, preventing the window from being broken with a stone or hand tool.
In addition, expensive thermal insulation films are self-adhesive. That is, it is much easier to apply them to glass - the protective upper layer and the canvas is carefully attached, while, of course, we must not forget about the need to remove possible air bubbles.
Sticking
If the film is not self-adhesive, you can attach it to the window in the following way:
- Wash the entire window, degrease, wipe dry thoroughly to avoid streaks;
- Double-sided tape is attached along the prepared perimeter of the frame;
- A piece of film is cut out the right size from a purchased roll;
- The upper protective part of the tape is removed;
- The film is glued;
- In order for it to stretch, let in sunlight and not interfere with the view of the surroundings, you need to go over the surface of the film with a hairdryer - it stretches perfectly and becomes barely noticeable.
Important! Experts insist that the film should be glued to the frame, and not to the glass itself. In this case, an air heat-protective pocket is formed.
The thermal film should be changed every year so that the protection of the room from heat leaks remains as reliable. We strongly advise you to additionally check the seals on plastic windows and replace them if necessary. Wooden frames should also be checked and, if necessary, sealed. published
If you have any questions on this topic, ask them to the experts and readers of our project.
During the cold season, heated air from the apartment leaks out. Approximately 70% of the volume of lost heat exits through window openings. Heat-saving film for windows will help reduce this number tenfold.
What it is
Heat-saving film is a thin transparent and elastic material applied to glass to reduce heat loss.
Suitable for wooden and plastic windows. It is made from polymer polyethylene terephthalate and is sold in rolls.
Advantages and disadvantages The film solves the issue of heat loss almost completely.
Some consumers also like the fact that it frosts the windows. Others value it for increasing the durability of glass (it becomes harder to break).
In addition to the advantages, the solution also has disadvantages. Indoor plants suffer the most from the use of film. They require sunlight to live, but the coating does not allow them to pass through. As a result, the home garden begins to wither. To support the flowers and prevent them from dying, the owner will have to purchase a photo lamp. WITH telephone communication
Small problems may also arise, but not as serious as is commonly believed. Signal reception and transmission deteriorate, but not critically.
It is also worth considering the shelf life of the product. It is designed for 1 season. Next fall you will have to purchase and re-apply the film. However, the issue is not acute, since the film is sold at a low cost.
How to use
- Algorithm of actions during installation:
- dismantling handles;
- window washing (both glass and frame are washed);
- degreasing the surface (it is better to use special solutions, but if they are not available, the use of medical alcohol is acceptable);
- gluing tape to frames;
- open the film (+2 cm on each side);
- delamination of the film (one of its working layers is glued to the other, both can be used, so it’s worth separating them from each other);
- spraying soapy water on glass;
- applying film to glass;
ironing the film with a roller (it will stick better, there will be fewer wrinkles with air).
Heat-shrinkable options are also glued, but at the end of the procedure you should blow the surface of the window with a stream of hot air.
