Are you considering constructing a garage but are worried about the associated costs? Sandwich panels could be the answer you’re searching for. Numerous homeowners favor these panels because of their reputation for longevity, cost-effectiveness, and insulating qualities.
A clear understanding of the cost is essential when organizing a garage project. The price of constructing a sandwich panel garage can differ based on a number of variables, including the garage’s dimensions, the caliber of the materials used, and any extra features you may want to add.
To give you a better idea, we’ll break down the major cost factors in this post. The cost of the panels themselves, labor, and any other costs you may incur are all covered. Whether you’re thinking about doing it yourself or hiring experts, this guide will offer insightful advice on how to effectively manage your budget.
- Prices for sandwich slabs
- Wall
- Roofing
- What determines the cost of construction??
- How much does a prefabricated modular building cost?
- Calculation rules
- For walls
- For roofing
- Drawing up estimates for prefabricated buildings
- Video on the topic
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Prices for sandwich slabs
What factors affect sandwich panel pricing? Remember not to mix them up with SIP panels when responding to this question.
Sandwich panels and SIP panels differ primarily in that the former also employ metal sheets as an outer protective layer. Moreover, oriented strand boards, or OSB, are used in the design of SIP panels. The kind of internal insulation and how the panel layers are joined to one another make up the second distinction.
Sandwich panels are the most common use for mineral wool.
Manufacturers have the option to substitute mineral wool with:
- polystyrene foam;
- polyisocyanurate foam;
- polyurethane foam pad.
The table detailed in the paragraph below illustrates how much an insulation material costs and how thick it is.
It should be mentioned that the entire area of the material that was purchased plus the quantity of installation services equals the final cost.
Wall
| Insulation material | Units. change. | Panel thickness (mm) | ||||||
| 60 | 80 | 100 | 120 | 150 | 200 | 250 | ||
| Price | ||||||||
| Expanded polystyrene | m 2 | from 1110 to 1300 | from 1140 to 1350 | from 1200 to 1410 | from 1230 to 1470 | from 1280 to 1560 | from 1410 to 1670 | from 1510 to 1720 |
| *with sheet size 2×1.2 | sheet | from 2665 | from 2735 | from 2880 | from 2955 | from 3075 | from 3385 | from 3625 |
| Mineral wool | m 2 | from 1230 to 1450 | from 1310 to 1500 | from 1360 to 1590 | from 1430 to 1680 | from 1510 to 1790 | from 1680 to 1985 | from 2020 to 2060 |
| *with sheet size 2×1.2 | sheet | from 2952 | from 3144 | from 3264 | from 3432 | from 3624 | from 4032 | from 4848 |
| Polyurethane foam | m 2 | from 1510 to 1530 | from 1800 to 1820 | from 1990 to 2010 | from 2210 to 2230 | from 2520 to 2550 | from 2840 to 2880 | from 3110 to 3150 |
| *with sheet size 2×1.19 | sheet | from 3595 | from 4285 | from 4735 | from 5260 | from 6000 | from 6760 | from 7400 |
| Foam polyisocyanurate | m 2 | from 1515 to 1535 | from 1805 to 1825 | from 1995 to 2015 | from 2215 to 2235 | from 2525 to 2555 | from 2845 to 2885 | from 3115 to 3155 |
| *with sheet size 2×1.19 | sheet | from 3605 | from 4295 | from 4750 | from 5270 | from 6010 | from 6770 | from 7415 |
You can read a comprehensive article about sandwich panel costs here.
Roofing
| Insulation material | Units. change. | Panel thickness (mm) | ||||||
| 60 | 80 | 100 | 120 | 150 | 200 | 250 | ||
| Price | ||||||||
| Expanded polystyrene | m 2 | from 1200 to 1385 | from 1140 to 1440 | from 1200 to 1500 | from 1280 to 1555 | from 1350 to 1645 | from 1500 to 1780 | from 1550 to 1910 |
| *with sheet size 3×1.0 | sheet | from 3600 | from 3420 | from 3600 | from 3840 | from 4050 | from 4500 | from 4650 |
| Mineral wool | m 2 | from 1300 to 1530 | from 1380 to 1590 | from 1410 to 1675 | from 1500 to 1760 | from 1560 to 1875 | from 1720 to 2065 | from 2090 to 2250 |
| *with sheet size 3×1.0 | sheet | from 3900 | from 4140 | from 4230 | from 4500 | from 4680 | from 5160 | from 6270 |
| Polyurethane foam | m 2 | from 1520 to 1540 | from 1770 to 1790 | from 1980 to 2000 | from 2310 to 2340 | from 2650 to 2700 | — | — |
| *with sheet size 3×1.0 | sheet | from 4560 | from 5310 | from 5940 | from 6930 | from 7950 | — | — |
| Polyisocyanurate foam | m 2 | from 1525 to 1545 | from 1775 to 1795 | from 1985 to 2005 | from 2315 to 2345 | from 2655 to 2705 | — | — |
| *with sheet size 3×1.0 | sheet | from 4575 | from 5325 | from 5955 | from 6945 | from 7965 | — | — |
What determines the cost of construction??
Installing a sandwich panel prefabricated garage costs vary depending on several factors.
First of all, the building’s specifications and dimensions have a direct bearing on the total amount.
The specifications of the garage will dictate the kind of roof and walls, the difficulty of the work completed, and the kind and length of the slabs that will be installed later.
The thickness of the panels, the kind of gate, its width, the material it is made of, and the difficulty of installation are the main factors that affect the price. The side wall will need to be strengthened in order to accommodate the extra doors, and installing and cutting slabs will cost extra.
It will cost money to demolish the old building that is on the construction site. The requirements must also be met by the structure’s foundation. Services might be needed for this to be installed or reinforced.
The material’s manufacturer is a crucial but secondary factor. The price of imported panels is slightly higher than that of native ones. It’s also important to keep in mind that extra supplies (sealants, extra parts, drainage systems) might be needed when installing structures.
How much does a prefabricated modular building cost?
The table below shows the average cost of installation work in the Russian Federation.
| Type of services provided | Mounting panel thickness | Average cost of installation work per 1 m 2, rub. |
| Installation of roofing sandwich panels | from 60 to 120 | from 680 |
| 150 | from 710 | |
| from 200 to 250 | from 780 | |
| Installation of wall sandwich panels | from 60 to 120 | from 650 |
| 150 | from 690 | |
| from 200 to 250 | from 750 |
Preliminary calculations indicate that a single-car structure typically costs between 250,000 and 400,000 Russian rubles.
Sandwich panel garage construction is an economical and practical choice that strikes a balance between affordability and durability. Costs can differ according to the garage’s dimensions, labor expenses, and material quality, but in general, this option is less expensive than using traditional building techniques. Sandwich panels provide a practical and adaptable solution for your garage needs, regardless of your preferences for a more customized structure or a more basic setup.
Calculation rules
When building a garage out of sandwich panels, you should begin with:
- calculations of design dimensions;
- development of diagrams and drawings, analysis of required materials;
- budgeting;
- cost calculation for their acquisition.
As it happens, most residential garages have the following measurements: 4 meters wide by 6 meters long by 2.5–3 meters tall. Cars in the sedan and crossover classes will fit these dimensions with ease.
Additionally, as experience has shown, these sizes are the only ones available in the supplier companies’ catalogs when it comes to sandwich panel garage options.
Offers could change:
- capacity (one, two or more cars);
- by type of vehicle (car or truck);
- roofing options (single or gable).
The table below provides a clearer presentation of the dimensions and available options for potential designs.
| Design dimensions (WxLxH) | Number of cars (pcs) | Number of gates (pcs) | Roof type |
| 4x6x3 | 1 | 1 | Single slope (B-2) |
| 4x12x3 | 2 | 1 | Gable (2xB-1) |
| 4x6x3 | 1 | 1 | Gable (B-1) |
| 8x6x3 | 2 | 2 | Two single-pitched (2xB-1) |
| 4x12x3 | 2 | 1 | Two single-pitched (2xB-1) |
| 8x12x3 | 4 | 2 (possibly 4) | Four single-pitched (2SxB-1) |
For walls
It turns out that figuring out how much material is needed is not as difficult as it first appears. The most popular and reasonably priced 4x6x3 option with a pitched roof, one gate, and enough space for one car was selected for the computation below.
It is important to consider the slope of the roof. As seen in the below photo, it is preferable to orient it along the width of the structure in order to minimize costs.
The structure’s final measurements will resemble this::
- Width – 4 m.
- Length – 6 m.
- Height – 3 m.
- Gate width – 2.5 m.
- Gate height – 2.3 m.
Since garage entrance gates are either manufactured from materials distinct from those of the main structure or are purchased already built, their area can be divided from the portion of the structure covered in sandwich panels.
The area of the rectangle made up of the front, back, and side sections can be found by multiplying the length by the width formula:
The gate area value will yield the following result:
2.3 x 2.5 m = 5.75 m^
The front and back sections resemble one another. But it’s crucial to keep in mind that they have a sloped roof, which needs to be considered in the calculations as well.
The area of the triangle and rectangle formed by the roof’s slope must be determined in order to determine the area of the front portion. Originally, it was stated that the object’s height could not be more than three meters.
Typically, the roof slope forms at a very slight slope of no more than 30 cm. This indicates that the right side will be roughly 2.7 meters tall.
We can now determine the necessary area of the front and rear wall’s rectangle after knowing the fundamental parameters:
10.8m2 is equal to 2.7m x 4m.
The formula for calculating the area of a triangle is to multiply two sides and then divide the resultant number by half.
The following is the calculation procedure:
0.3 meters times 4 meters is 0.6 square meters.
A 30 cm slope to the left is formed by 0.3 meters.
The side wall values still need to be calculated. The computation is exactly the same as in the earlier instances:
- 6m x 3m = 18m2 – area of the left wall.
- 6m x 2.7m = 16.2m2 will be required for cladding the right side of the object.
The final value can be calculated by adding the previously acquired results and deducting the gate area:
18 m^+16.2 m^+(10.8 m^+0.6 m )*2–5.75 m^}= 51.25 m^.
But any builder-installer will tell you that it’s crucial to set aside some money when making a purchase. To protect yourself in the future, leave at least 2-2.5 m2, or one block 1-1.2 m wide per structure length. The design parameters need to be considered when recalculating in sheets.
The front and rear walls in this example are 4 meters long, and the side walls are 6 meters long. You will need 5 sheets that are 6 meters long and 4 sheets that are 4 meters long and 1.2 meters wide if you order ready-made sizes.
If you are able to cut the slabs yourself, it is best to buy sandwich panels that are 12 meters long rather than smaller ones because the latter will undoubtedly cost more.
For roofing
The coverage area must be determined in order to determine the quantity of materials needed to cover the roof in the same manner as in the preceding section.
But this is where the majority of people go wrong. The width of the roof will never match the width of the garage when a roof slope is installed along the front and back of the building. Without a doubt, it will be somewhat larger.
Using the formula for determining a right triangle’s third side given the values of the other two sides, you can determine the width of the roof.
The formula is given as the square root of the total squares of the sides that are known.
4.01 meters will be the result of entering the values for a garage width of 4 meters and a roof slope height of 0.3 meters into the formula. Even though there is only a 1 cm difference in width between the structure’s roof and the garage in this example, if this is overlooked during installation, a gap could form that will need to be filled in with more work.
The length of the garage multiplied by 6. m to find the amount of material needed to cover the roof is 4.01 m.
24.07 m^2 is 4.01 x 6 m.
The typical roofing sheet width is one meter. As a result, six sheets measuring 4.01 meters in length will be needed to cover the object’s roof.
Drawing up estimates for prefabricated buildings
Considerations to include in a sandwich panel garage estimate are as follows:
- Dimensions of the room and roof.
- Panel type.
- Cost of installation services.
- The cost of the panels themselves.
- Cost of additional elements.
- The need to dismantle the old building.
- The need to create or strengthen the foundation.
- The need to prepare a site for a garage.
| Item | Estimated Cost |
| Sandwich panels | $2,500 – $4,000 |
| Foundation | $1,000 – $2,000 |
| Doors and windows | $500 – $1,500 |
| Labor | $1,500 – $3,000 |
| Insulation | $500 – $1,000 |
| Electrical work | $300 – $800 |
| Finishing touches | $200 – $500 |
For many homeowners, constructing a garage out of sandwich panels is an economical and practical solution. Numerous variables, including the garage’s size, the caliber of the materials, and the design’s intricacy, can affect the cost. A standard-sized garage should cost you, on average, between $5,000 and $15,000.
The materials themselves, mostly the sandwich panels, usually account for a large amount of the price. These panels are prized for their exceptional durability and insulating qualities. The roofing, foundation, and any custom features you may desire, like extra doors or windows, will all incur additional costs.
The cost of labor may also affect the final cost. Hiring qualified experts guarantees a better finish and a more seamless building process. Obtaining several quotations and selecting a reputable contractor are imperative if you want to get the most for your money.
All things considered, purchasing a sandwich panel garage is a wise decision. It’s a useful, long-lasting, and attractive solution that can raise the functionality and market value of your house. You can accomplish excellent results within your budget by being aware of the different cost factors and making appropriate plans.
