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How to build a sandwich panel garage

This post explains step-by-step how to build a sandwich panel garage - an economical and efficient structure that can be easily constructed and designed for any space. This system is advantageous due to its affordability, portability, and flexibility. The easy-to-follow instructions, detailed diagrams, and quick assembly methods featured in this post make building a sandwich panel garage simple and straightforward for anyone. Additionally, these garages are far more resilient than other garage structures, with superior fire resistance, acoustic insulation, and waterproofing. This post is the perfect guide for anyone looking to build an inexpensive, durable, and secure garage.

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Today we will talk about one of the fastest and most inexpensive ways to build a dry and warm garage. We will talk about the technique of assembling a frame structure, the walls of which are lined with sandwich panels, as well as the choice of a supporting base and many other features of the construction process..

Sandwich panel garage

What panels to buy

For building a garage, panels with mineral wool filler are best suited. Core density and thickness are determined by the requirements of sound and thermal insulation without taking into account the bearing loads.

Metal sandwich panels must have a double-sided sheath up to 1 mm thick. The composition and strength of the protective coating are very important, especially on the inner side with high operational loads. Plastoisol, polyester or galvanized are recommended for garages.

Sandwich panel garage

If the panels are laid horizontally, the standard length of 6 meters will be sufficient for the side walls. However, it is better to make the back wall 1–1.4 meters shorter in order to use the segments in narrow areas at the gate. If the available length of the panels is short, they can be joined without breaking apart the vertical seams..

Garage foundation

The main load on the foundation consists of the dead weight of the structure and the vehicle, so the garage floor must be properly strengthened. One of the options is to completely abandon concrete work and install a garage on screw piles. They have:

  • with a step of 100-150 cm along the lines of the wheels;
  • at the corners of the garage;
  • intermediate for walls with a step of 3 m (positioned coaxially with the central rows).

Sandwich panel garage

Screw-in depth – up to the stop in the soil layer with a bearing capacity of at least 3.5 kg / cm2.

The main disadvantage of the frame floor is the inability to arrange a viewing hole. If it is necessary, the floor in the garage is needed quite ordinary: a light strip foundation around the perimeter, pouring a pit bowl and a cement screed.

Installation of frame floor

Each transverse row of central piles is covered with a 12 or 14 profile channel. This is how a system of supporting floor logs is formed. They must protrude beyond the outer plane of the frame by at least the thickness of the panels used.

Sandwich panel garage

On top of the bearing logs, it is necessary to lay mortgages for the drive-in – two channels with profile No. 8 along each wheel line. For the lathing of the rest of the floor, a light pipe 40x40x4 mm is laid longitudinally with an inter-axle pitch of 40-50 cm.

If you reduce the pitch of installing the piles around the perimeter to 1.5 meters, you can not perform the upper crate at all: instead, the formwork is hammered to the channels and a monolithic slab of reinforced concrete is poured. Its strength is ensured by two nets of 14 mm profile reinforcement, tied below and above the plane of the bearing logs with a protective concrete layer of at least 40 mm.

Sandwich panel garage

Otherwise, you should first arrange a subfloor, covering the crate with 16 mm moisture-resistant plywood, and then lay tiles or paving slabs. Alternatively, simply paint the surface with alkyd or polyester enamel 5-6 times and then renew it every year. It should be remembered that any frame floor needs insulation and protection from moisture, therefore, before plywood flooring, you must:

  1. Fasten the sublag beams from below to the lags.
  2. Hem them with an unedged board.
  3. Fill the inner space of the floor with bulk insulation.
  4. Protect it from above with a vapor barrier, and from the bottom and sides with a windproof membrane.
  5. Carefully seal all internal joints of the subfloor with polyurethane foam.

Frame device

The garage frame forms a cage with upper and lower solid rims around the perimeter and vertical posts installed with the recommended panel fastening spacing and 20-30 mm on each side of the vertical joints. It is recommended to make the frame from a profile pipe of the same standard size as on the floor lathing.

Note.Smaller pipes should not be used: a thin metal structure will turn out to be too shaky. Under wind loads, the panels will move, which will lead to the destruction of the joints and filler.

Sandwich panel garage

If the garage doors are steel swing doors, their box is immediately installed on the channels and taken as a reference point. The following installation scheme will be convenient:

  1. On the ground, assemble frames from a profile pipe for the side walls (only perimeter).
  2. Wall frames parallel to the roof slope should be assembled in a trapezoidal shape.
  3. The manufactured frames rise vertically, from above and below they are connected by pipes, forming the planes of the front and rear walls.
  4. In place, vertical posts are cut and attached.
  5. Embeds are placed in the openings of windows and gates.
  6. To give rigidity over the crown, crossbars are added along the pitch of the bearing racks. They also serve as the basis for the roof, so they fit across the slope.

Sandwich panel garage

The garage span up to 4.5 meters long is covered with the same pipe 40x40x4 mm, from 4.5 to 6 meters – with a pipe of at least 90x90x6.5. Longer span should only be covered with angle steel trusses.

The frame is attached to the base by welding, bolts or anchors only after the final completion of the assembly. Before further work, all metal structures must be cleaned of rust, degreased, primed and painted. Elements such as shelf brackets are best welded to the frame posts in advance..

Garage paneling

First, a starting profile is attached to the channels protruding beyond the frame, on the bottom of which a small amount of polyurethane foam is applied and the bottom row of panels is inserted. All joints, regardless of the presence of locks, are also foamed before laying the adjacent element. Panel fastened with pre-drilled steel self-tapping screws without reamer.

Corner connections can be made without corner panels:

  • cut the ends at 45 °;
  • seal the joint well with polyurethane foam;
  • paint the corner thoroughly, or better – cover it with bituminous mastic;
  • close with a corner strip or an ordinary ridge for a profiled sheet.

Sandwich panel garage

The ends of the bearing channels must be closed with an ebb, the overhang of which is at least 160 mm. Vertical seams are also covered with strips.

For a ventilation device (at least 2 points) it is necessary:

  • make a hole in the panel with a 50 mm crown;
  • tightly insert the plumbing pipe into it with a slight outward slope;
  • cut the pipe with a 15 mm rim on each side, seal with silicone;
  • install decorative grilles.

Roof laying and insulation

Before laying the roof, it is necessary to cut the panels protruding above the pipe of the upper rim to form a uniform bevel of the ends of the walls for tight adjoining to the back plane of the roof.

Sandwich panel garage

To surely exclude blowing under the roof sheathing, it is better to cover it with panels too. They are attached in the same way to the top ridge and stacked in vertical rows. At the junctions of the walls with the roof, polyurethane foam is abundantly applied to the pipe and the open end of the panel, additionally the assembly is protected with paint / mastic and corner strips from the outside and inside.

It remains only to close the cuts of panels in the openings of windows and gates with ebb tides, and also to protect the open ends of the roof. The latter is recommended only for the technology recommended by the manufacturer..

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Comments: 3
  1. Finley

    I’m wondering if anyone can provide guidance on how to construct a sandwich panel garage. What materials should be used, and what tools are necessary for the construction process? Are there any specific steps or techniques that need to be followed? Any tips or recommendations would be greatly appreciated!

    Reply
  2. Clara Turner

    Can someone please guide me on the step-by-step process of constructing a sandwich panel garage? I’m interested in knowing the materials required, any specific tools needed, and the general construction process. Additionally, any tips or recommendations would be highly appreciated. Thanks in advance!

    Reply
    1. Nathan Miller

      Constructing a sandwich panel garage involves several steps. First, gather the necessary materials: sandwich panels (insulated metal panels), a foundation, steel beams, roofing materials, fasteners, and sealing materials. Specific tools required may include a circular saw, drill, impact driver, level, measuring tape, and a hammer.

      Begin by preparing the foundation, ensuring it is level and sturdy. Next, assemble the steel beams to create the framework for the garage walls and roof. Attach the sandwich panels to the steel framework using the appropriate fasteners, ensuring a secure fit. Install windows, doors, and any desired insulation.

      For the roof, attach the roofing materials, such as metal sheets or tiles, using the recommended method. Seal the joints and connections with appropriate materials to prevent leaks and provide added insulation.

      Throughout the process, follow the manufacturer’s instructions for the sandwich panels and other materials to ensure proper installation.

      Tips and recommendations:
      1. Plan the layout and design of your garage carefully before starting construction.
      2. Ensure you have the necessary permits and check local building codes.
      3. Take safety precautions, using protective gear and following construction guidelines.
      4. Seek professional assistance if needed, especially for wiring, plumbing, or complex constructions.
      5. Consider the climate in your area when choosing insulation materials for the sandwich panels.
      6. Regularly inspect and maintain the garage to prolong its lifespan.

      Remember, the specific construction process may vary based on the design and size of the garage, so consulting professional builders or construction guides is advised for a detailed step-by-step guide tailored to your specific project.

      Reply
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