Car owners are constantly faced with the question of the safety of personal transport, especially in a harsh climate, where temperature changes and humidity quickly destroy the body. Traditional brick building is becoming too expensive and time-consuming, requiring a powerful foundation and a team of masons. That's why. sandwich-panel garage It is gaining popularity as the most rational solution for individuals and commercial structures.
Such structures are erected in a matter of days, not months, and allow immediately after the completion of work to operate the premises for their intended purpose. The lightness of the material significantly reduces the load on the base, which makes it possible to save on concrete work. In this article, we will discuss in detail all the stages of creating a reliable shelter for your car, from the choice of project to finishing.
The main advantage of the technology lies in the multilayer structure of the material, which simultaneously performs the functions of a carrier element, insulation and decorative finish. This eliminates the need for additional thermal insulation work, which is mandatory when using profnatsil or foam blocks. You get a ready-to-use space with excellent energy efficiency.
Advantages and disadvantages of prefabricated structures
The choice of building material is always a compromise between cost, speed of construction and durability. Sandwich panels are a “cake” of two sheets of metal (or other materials) and a layer of insulation between them. Rapid construction technology It allows you to get a finished object in the shortest possible time, which often becomes a decisive factor.
One of the key advantages is the absence of “wet” processes, except for pouring the foundation. This means that it is possible to build even in the cold season, when brickwork is impossible or requires special additives in the solution. In addition, the material has a low thermal conductivity, which allows you to minimize heating costs if you plan to install a heater in the garage.
However, the technology has its limitations, which you need to know before purchasing. Metal plating requires careful treatment during installation, since damage to the protective polymer layer can lead to corrosion. It is also worth considering that the bearing capacity of the walls is limited, and you can fasten heavy shelves or winches only in places of strengthening the frame.
- 🚀 High installation speed – the box assembly takes from 3 to 7 days.
- ❄️ Excellent thermal insulation - keeping warm in winter and cool in summer.
- 💰 Savings on the foundation – lightweight construction does not require buried bases.
- 🔥 Fire safety is the use of materials of class NG or G1.
⚠️ Attention: When choosing panels with polystyrene filler, make sure that they have a flammability class not lower than G1, since ordinary foam can be dangerous in case of fire in an enclosed space.
The durability of the structure directly depends on the quality of the protective coating of the metal. Modern panels are coated with polyester, pural or plastisol, each of which has a different resistance to mechanical damage and ultraviolet. The service life of a properly mounted structure is more than 50 years without loss of operational properties.
Design and calculation of materials
Before purchasing rolled metal and panels, it is necessary to develop a detailed project. Even a simple 6 by 4-meter structure requires the calculation of the loads on the frame, especially if heavy snowfalls fall in the region. load-bearing capacity The columns and farms are calculated with a margin to withstand wind and snow loads.
At the design stage, the type of gate, the presence of an observation pit or basement, as well as the ventilation scheme are determined. Quality garage-plan It should include not only the drawing of the building itself, but also a plan for the supply of communications: electricity, water supply and, if necessary, heating. Mistakes at this stage can be costly in rebuilding.
Calculation of the number of materials is made taking into account the overlap of the panels. The standard useful width of wall elements is usually 1100-1150 mm with a total width of 1200 mm. When calculating the length of the roof ramps, the overhang of the cornice, which is necessary to divert water from the walls and foundation, is taken into account.
| Parameter | Optimal value | Note |
|---|---|---|
| Gate height | 2.2 - 2.5 m | Depends on the height of the car. |
| Gate width | 2.7 - 3.0 m | For a back-up race |
| Thickness of walls | 100 - 150 mm | Depends on the climate. |
| Roof slope | 10 - 15 degrees. | Minimum for water runoff |
It is important to determine the type of foundation in advance, since the scheme of attachment of the lower support profiles depends on this. For lightweight structures, a monolithic slab is often used, which simultaneously serves as a floor. If the soils are hollow, a belt foundation with a depth of laying below the freezing point may be required.
How to calculate the number of screws?
For reliable mounting of one panel, an average of 6-8 screws per square meter of surface is required. Do not skimp on fasteners using galvanized products with EPDM-laying, which prevent leakage in the docking areas.
Foundation and site preparation
It's starting. garage-building (c) preparation of the base. Since the weight of sandwich panels is minimal, the foundation requirements are lower than for brick buildings, but the geology of the site cannot be ignored. The first step is always to remove the fertile layer of soil and level the site.
The most popular solution is a monolithic concrete slab 10-15 cm thick with grid reinforcement. Such a plate distributes the load evenly and immediately gives a ready-made basis for installing the car. Around the perimeter of the plate, a small side is often cast or formwork is installed to form a cap.
An alternative can be a tape foundation, if you plan to build an observation pit. In this case, first dig the trench under the tape and the pit under the pit, then the reinforcement frame is knit and concrete is poured. After gaining strength inside the perimeter, the floor is poured, which should not be rigidly connected to the walls to avoid cracks during shrinkage.
- 📐 Perimeter markings with pegs and cord.
- 🚜 Soil extraction and sand cushion device.
- 🧱 Formwork installation and reinforcement.
- 🚿 Pouring concrete and caring for it for 28 days.
Waterproofing of the foundation is a mandatory stage. Between the concrete and the metal frame necessarily laid a layer of ruberoid or bitumen mastic. This prevents the capillary moisture pump and protects the metal from corrosion at the bottom of the structure.
☑️ Foundation readiness
Installation of the metal frame
The frame is the skeleton of the future garage, and the geometry of the entire building depends on the quality of its assembly. Usually used profile tubes rectangular cross-section or double-taur, depending on the spans. Metal frame are collected on bolt joints or by welding, after which they must be painted with anticorrosion primer.
Installation begins with the installation of columns around the perimeter. They are exposed strictly in terms of level and temporarily fixed by slanting until the moment of final consolidation. The columns are usually 3 or 6 meters in step, which corresponds to the standard length of the panels and reduces the amount of waste when cutting.
After installation of vertical racks, trusses or beams of the floor are mounted. If the garage is one-stop, then one side of the walls is made higher than the other to create a slope. All connections should be made carefully, without distortion, since it will be almost impossible to correct the geometry after paneling.
⚠️ Attention: All welds on the frame should be cleaned and covered with at least two layers of soil enamel along rust to exclude foci of corrosion in the future.
For fastening the gate group often provide reinforced racks of a channel or pipe with a greater wall thickness. This is necessary so that heavy swing or sectional gates do not loosen the structure during the opening and closing process.
Covering and sealing technology
The wall and roofing skin is the final stage, giving the garage the appearance and functionality. Installation of sandwich panels is performed horizontally or vertically, starting from the bottom row. Fixing is carried out by special screws with a press washer and a rubber pad, which are screwed into the wave profile.
It is important not to pull screws, so as not to push the metal and not to damage the insulation, but also not to untwist them, otherwise the tightness will be violated. The joints between the panels are filled with mounting foam or a special sealant, and on top are closed with decorative alkalis. Sealing of joints It is a critical point to prevent squabbles.
The corners of the building, door and window openings are made of additional elements of the same material as the panels. This protects the ends of the insulation from moisture and ultraviolet radiation, which over time can destroy polyurethane foam. All work should be done carefully so as not to scratch the protective coating of the tool or shoes.
Use only metal scissors or an electrojigsaw for cutting panels. Bulgarian (USM) with abrasive disc is strictly prohibited, as sparks and heating destroy the zinc layer and polymer coating, triggering rapid corrosion.
Roofing panels are laid with the obligatory observance of the overhang along the length (usually 20-30 cm) and along the wave. In places of junction of stingrays or adjoining to the wall, skate and wall slats are installed. Special attention is paid to the drain: a properly mounted system of gutters and pipes will take water away from the foundation, preserving its integrity.
Internal arrangements and communications
After the completion of external work, the stage of internal improvement begins. Sandwich panels have a smooth surface that is easy to wash, but if desired, the walls can be sheathed with drywall or a proflist for additional protection from mechanical damage. Interior decoration It also includes the installation of electrical cables.
Wiring in garages of metal structures is recommended to be performed in an open way in non-combustible cable channels or corrugated pipes. This is in compliance with fire safety regulations and makes it easier to access the wires in case of repairs. Sockets and switches are selected with a protection class not lower than IP44, to exclude dust and moisture.
Ventilation is another important aspect. In a sealed garage of sandwich panels, moisture and gasoline vapor quickly accumulate. It is necessary to provide for supply and exhaust ventilation to ensure the exchange of air and prevent the formation of condensation on the metal and the car.
- 💡 Installation of LED lighting for bright light without heating.
- 🔌 Installation of outlets 220V and 380V (if necessary).
- 💨 Organization of natural or forced ventilation.
- 🛠 Installation of the workbench and tool storage systems.
If the garage is planned to be used as a workshop, it is worth taking care of additional insulation of the gate and installing a vestibule to minimize heat loss at the entrance. You can also install a smart home system for remote temperature control and gate opening.
High-quality ventilation and proper electrical wiring in cable channels are the key to safe operation of the garage from sandwich panels for many years to come.
Do you need a 3x6 foot garage?
Yes, the foundation is mandatory. For a garage of this size, the best solution will be a monolithic plate 10-15 cm thick. It will provide a flat surface for the car and protect from moisture from below. Using only columns is possible only for temporary or very light designs, but for permanent storage of cars it is risky.
What thickness of sandwich panels is needed for a garage?
For most regions of Russia, the optimal wall thickness is 100 mm. If the garage is heated or located in the northern latitudes, it is better to choose 150 mm. For unheated rooms in the southern regions can be enough 50-80 mm, but the savings on insulation will lead to condensation.
How long does it take to build a garage?
If there is a ready foundation, a team of 2-3 people will assemble a frame and sew a garage of 6x4 meters in 3-5 working days. If you take into account the time for pouring and drying concrete (about 3-4 weeks), the total period will be about 1-1.5 months.
Can I build a garage in winter?
Yes, the technology of installation of sandwich panels allows you to build at negative temperatures. The only limitation is the pouring of the foundation, which must be carried out before frosts, using anti-frost additives or warming up concrete.