The garage has long ceased to be just a place to park a car, turning into a full-fledged workshop, warehouse or recreation area. However, harsh operating conditions, temperature changes and the need for protection from moisture raise the question of high-quality, but inexpensive interior finishing for the owner. The choice of material in this case becomes a balancing act between cost, durability and functionality.
The modern building materials market offers many solutions that allow sheathe the garage at no extra cost. It is important to understand that “inexpensive” does not always mean “bad” if you choose the right installation technology and take into account the specific microclimate of the room. In this article, we will analyze in detail the popular options, their pros and cons, and also help you decide on the choice for your specific case.
Before starting work, it is necessary to clearly formulate the goals: whether the garage will be heated, whether it is planned to work with fuels and lubricants or welding, whether aesthetics are important or just practicality. The choice directly depends on the answers to these questions. finishing coating. The wrong decision can lead to rapid destruction of the finish or even create a fire hazard.
Criteria for choosing materials for a garage
The main task of internal cladding is not only to give the walls a neat appearance, but also to protect the structure from external influences. Materials must have high mechanical strength to withstand accidental impacts from tools or vehicle parts. In addition, condensation often accumulates in garages, so moisture resistance is a critical parameter.
Don't forget about fire safety. In the room where fuel is stored and electrical work is carried out, the use of flammable materials should be minimized or eliminated altogether. Fire resistance sheathing can save property and lives in an emergency.
⚠️ Attention: When choosing materials, be sure to check fire safety certificates. The use of flammable panels without special impregnation in a closed garage is strictly not recommended.
Temperature stability is also an important factor. The material should not deform or crack during sudden temperature changes, which is especially important for unheated rooms in winter. Frost resistance and the ability to maintain its properties over a wide range of temperatures are key characteristics for garage finishing.
Particle boards: OSB and plywood
One of the most popular ways to cover walls on a budget is to use wood-based board materials. OSB - oriented strand board, which combines strength, affordable price and ease of installation. For a garage, slabs of the 3rd or 4th moisture resistance class are best suited.
Plywood is also a great option, especially if a smoother surface is desired. However, high-quality moisture-resistant plywood can be more expensive than OSB. Both materials are easily attached to a frame made of timber or metal profile, which allows additional insulate walls, laying an insulator between the racks.
- ✅ High mechanical strength - can withstand heavy shelves and tools.
- ✅ Easy to process - easy to cut with a jigsaw or circular saw.
- ✅ Possibility of attaching heavy objects anywhere on the wall.
- ✅ Affordable price compared to other types of cladding.
Despite their advantages, wood boards have a significant drawback - flammability. Even treated with fire retardants, they remain organic material. Therefore, electrical wiring in garages with such finishing should only be laid in metal corrugations or cable channels.
☑️ Check before installation of slabs
Lining and block house: classics in the garage
Wooden lining is a traditional material that creates a cozy atmosphere, but requires a special approach in garage conditions. For technical rooms, it is better to choose lining made from coniferous species (pine, spruce), as they are more resistant to moisture due to their resin content. However fire hazard remains the main enemy of such finishing.
There is also plastic lining (PVC), which does not have the problem of flammability to the same extent as wood, and is absolutely not afraid of moisture. It is easy to wash, it does not rot and is not affected by fungus. But PVC has a disadvantage - low impact resistance. An accidental impact with a bumper or a heavy tool can pierce the wall.
A block house that imitates a rounded log looks aesthetically pleasing, but “eats up” a lot of usable space due to its thickness. If the garage is small, this can be a critical factor. To fasten wooden lining, a hidden method is often used - clamps, which allows you to get a perfectly flat surface without visible nail heads.
⚠️ Attention: Wooden lining in the garage must be treated with fire-bioprotective compounds. Regular varnish or paint will not provide adequate fire protection.
Secrets of installing lining in the garage
When installing lining in an unheated garage, leave small gaps between the slats (1-2 mm) to compensate for thermal expansion. This will prevent the walls from swelling in the summer.
Drywall: pros, cons and nuances
Drywall (gypsum plasterboard) is often considered as a universal solution, but is only suitable for a garage moisture resistant drywall (GKLV), which has a characteristic green color. An ordinary gray sheet will quickly become unusable due to dampness. The main advantage of gypsum boards is the ability to create perfectly smooth walls and hide communications.
Installation of drywall is carried out on a metal frame made of profiles UD and CD. This allows you to lay a layer of insulation and vapor barrier. However, drywall itself is a fragile material. You can even punch a hole in the wall by accidentally hitting the corner of a toolbox.
To increase the strength of the walls in the garage, it is recommended to use double cladding technology or fiberglass reinforcement before painting. Finishing is usually done water-based or latex paint, which is easy to renew if dirty.
| Parameter | GKL Moisture-resistant | OSB-3 Plate | Plastic lining |
|---|---|---|---|
| Moisture resistance | High | Average | Maximum |
| Fire safety | Non-flammable | Flammable | Melting |
| Impact resistance | Low | High | Low |
| Difficulty of installation | Average | Low | Low |
When installing drywall in a garage, use reinforced profiles (0.6 mm instead of 0.4 mm) to increase the rigidity of the structure so that shelves with heavy parts do not deform the wall.
Metal profile and corrugated sheeting
Corrugated sheeting is perhaps the most “masculine” and utilitarian finishing option. Wall profiled sheet (brands C or NS) has excellent mechanical strength, is not afraid of moisture, temperature changes and open fire. This is an ideal solution for unheated garages and workshops where active work is carried out.
Metal sheets are easily mounted on the sheathing. The only negative is the “coldness” of the material and the possible formation of condensation on the back side with poor ventilation. Therefore, when covering with metal, it is imperative to provide ventilation gap and use vapor barrier membranes.
The aesthetics of corrugated sheeting is specific, but in a garage this is often secondary. The main thing is reliability and durability. The metal does not rot or mold and lasts for decades. For fastening, special self-tapping screws are used. EPDM gaskets and a cap painted in the color of the leaf.
Corrugated sheeting is the best choice for an unheated garage, where the priority is durability and fire safety, rather than creating a cozy interior.
PVC panels and siding
Plastic panels and siding are often chosen due to their low cost and ease of maintenance. They do not require painting, are easy to clean with water and household chemicals and are not subject to corrosion. However, when choosing panels for a garage, you need to pay attention to the strength class - for technical rooms you need extruded PVC, and not a cheap ceiling option.
Siding (vinyl or metal) is most often used for exterior decoration, but can also be used indoors. It creates a ventilated facade, which is good for removing moisture from the structure. However, the interior of the garage may look too “street”.
Therefore, placing panels in close proximity to heat sources (stoves, heaters) is unacceptable. The distance must be at least 50-70 cm.
⚠️ Attention: Cheap plastic panels become fragile in the cold. If the garage is unheated, in winter such cladding may simply crumble upon impact.
How to distinguish high-quality PVC?
Press the panel with your finger. There will be no dents left on a quality product, and the color will not change. Cheap plastic will wrinkle and may have white stripes.
Insulation and vapor barrier: is it necessary?
The decision to insulate your garage depends on how you plan to use it. If the car is kept warm, and you like to spend time in the garage in winter, then insulation necessary. If the garage is only used for overnighting the car, insulation can even cause harm, creating the effect of a thermos and increasing humidity.
Mineral wool or expanded polystyrene (foam plastic) are most often used as insulation. Mineral wool does not burn, but is afraid of moisture. Polystyrene foam is moisture resistant, but flammable and loved by rodents. The optimal, but more expensive option is extruded polystyrene foam (Penoplex), which combines strength, moisture resistance and low thermal conductivity.
Regardless of the insulation chosen, it is critical to install the vapor barrier correctly. In garages with temperature changes, the dew point can shift, and condensation will fall inside the wall, moistening the insulation and frame. The vapor barrier film must be attached with an overlap and the joints must be taped with special tape.
The issue of ventilation also cannot be ignored. Ensure air supply and exhaust so that gasoline vapors and exhaust gases do not accumulate in the room, and humidity is maintained at an acceptable level.
Can drywall be used in an unheated garage?
Only moisture-resistant drywall (GKLV) can be used. However, if the garage freezes, there is a risk that the gypsum core will lose strength after several freeze/thaw cycles. It is better to consider OSB or corrugated board.
What is the best way to attach OSB to a metal frame?
The best option is metal screws with a press washer (sharp). They securely fix the stove and prevent it from “walking”. The length of the self-tapping screw must be such that it extends into the profile by at least 10 mm.
Do you need a primer for OSB before painting?
Definitely. OSB has a porous structure and strongly absorbs paint. A primer (preferably adhesive or alkyd) will reduce paint consumption, raise the pile (which then needs to be sanded off) and ensure a uniform color.
What is the minimum thickness of corrugated wall sheeting?
For the internal cladding of garage walls, it is recommended to use corrugated sheets with a thickness of at least 0.5 mm. Thinner metal (0.35-0.4 mm) is easily deformed if the tool or car parts are handled carelessly.