How to insulate garage doors with your own hands
Motorists traditionally spend a lot of time in the garage, caring for their “iron horses”. However, in winter, it is extremely uncomfortable to do the usual work, and sooner or later the owners face the question of insulating garage doors. This measure allows to solve the problem radically, since the heat evaporates very quickly through the door leaf (and usually it is steel sheets). Insulation of the garage not only creates comfortable conditions for its owner, but also allows:
- start the car faster in severe frosts;
- extend the life of rubber parts;
- prevent the appearance of condensation in the internal cavities of the machine;
- create the desired temperature regime in the vegetable store, which are often combined with garages.
The possibility of insulating garage doors depends on their design.
What gates can be insulated
Most gates have hinged leaves, which are steel sheets welded to a metal frame. Insulation of such gates is mandatory, since they practically do not retain heat. It’s easy to do, the simple design of swing gates allows you to use materials of any thickness.
Nowadays, overhead and sectional garage doors are very popular. As a rule, they are factory made. The door leaf or individual sections are sandwich panels. From the outside, they are covered with sheet steel, and from the inside they are already insulated with foamed polyurethane and do not need special measures for additional insulation. Hand-made lifting gates are insulated in the same way as swing gates. The thickness of the insulation for them should not exceed the dimensions of the frame. The same rule applies to rollbacks..
Roller shutter gates are not subject to insulation, since their design is designed for a certain thickness.
When choosing a material for insulation, its weight must be taken into account. Weighting the sash can lead to the fact that the mechanism by which the gate moves, over time will start to work worse and gradually fail..
The most popular materials for insulation
A good insulation should have low thermal conductivity, then a sufficiently thin layer can significantly reduce heat loss. The following materials are most often used to insulate garage doors:
- Mineral wool and its varieties – glass wool, slag wool, stone wool. All of them are highly hygroscopic, so they need waterproofing. When working with them, it is necessary to use protective equipment for hands and respiratory tract..
- Styrofoam. This word refers to a whole class of polymer gas-filled materials, these include polystyrene, polyvinyl chloride, urea-formaldehyde and polyurethane foam. All varieties differ in greater or lesser elasticity, composition, sound insulation.
All foams have qualities that are indispensable for insulating garage doors – low thermal conductivity and hygroscopicity, fire safety, chemical inertness.
How to insulate a garage door
Before starting work on insulation, it is necessary to check the performance of ventilation in the garage. During the process, you should not block the ventilation holes with insulation. Normal operation of ventilation helps to reduce humidity and timely removal of gasoline vapors and exhaust gases.
Let us analyze in detail how to insulate garage doors on their most common design – swing doors.
Examine the inner surface of the door leaf carefully. Large corroded areas are brushed with iron bristles. If rust has covered most of the steel sheet, it is more convenient and faster to work with a drill or grinder with a special round nozzle..
After thorough cleaning from rust and degreasing, apply an anti-corrosion primer.
Manufacturing and installation of lathing
Wooden bars or aluminum profiles are used as lathing. Attach the crate to the gate frame. The material for the lathing is cut to size. Wooden bars are impregnated with a double-action composition – from fire and decay. The lathing elements are attached to the sash frame with screws of suitable length. All accessories on the door leaf – locks, ventilation holes, trimmed with a crate around the perimeter.
Waterproofing and laying insulation
Before insulating the garage door with mineral wool, you need to observe some of the subtleties of handling this material. Of all its varieties, it is better to stop at basalt wool from a well-known manufacturer. Before installing cotton wool, you should take care of waterproofing so that the material does not absorb moisture. Good results are obtained by coating the inner side of the gate with bitumen-polymer mastic or finishing with a self-adhesive material such as “Izolon”.
After all the metal parts of the gate are covered with waterproofing, the insulation is cut into pieces of such a size that it exceeds the distance between the lathing bars by several centimeters. This is done so that gaps do not appear, since mineral wool cakes over time.
It is most convenient to cut the insulation as follows: spread a sheet of fiberboard on the floor, roll mineral wool over it, measure it and forcefully hold it with a sharp clerical knife.
A vapor barrier film is stretched over the mineral wool and attached to the bars with a construction stapler. After vapor barrier, the already insulated swing gates are ready for final finishing. Facing is made with plastic or wooden clapboard, corrugated board, OSB sheets. The facing material is attached to the bars with screws with a press washer.
Insulation laying around the perimeter of the gate
Gate leaves very rarely adjoin closely to each other. Usually a gap is formed between them, allowing the gate to be closed freely. Various seals are used to prevent heat leakage through these slots. As a rule, they are a self-adhesive strip with a rubber or foam seal. This seal is not suitable for insulating the lower part of the door. For these purposes, there are special brush strips. They are attached to the bottom of the gate with self-tapping screws..
After all the cracks are closed, the insulation of the garage door can be considered complete..