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FAQ

Do you have a question about our DIY building kits? Would you like to know more about materials, assembly, transport or delivery times? Take a look at our frequently asked questions.
What is the steel thickness of the cladding?
For our structure, the thickness we use depends on the region and the size of the building. The steel thickness of the sandwich panels is 0.50 mm for the outside of the wall and 0.45 mm for the inside. For non-insulated cladding, the steel thickness is 0.50 mm or 0.63 mm.
What are the insulation values of our panels?
For 60 mm wall panels, the R-value is 1.82 and the U-value is 0.55.
For 100 mm wall panels, the R-value is 3.15 and the U-value is 0.32.
For 60 mm roof panels, the R-value is 2.01 and the U-value is 0.5.
For 100 mm roof panels, the R-value is 3.25 and the U-value is 0.31.
Is an open structure also possible?
No, with FRISOKIT, an open building is not possible. If this is what you are looking for, please contact FRISOMAT.
What does buying from FRISOKIT look like in practice?
- You request and receive your quote.
- If you accept it, you will receive an order confirmation.
- Your construction plans will be drawn up by our technical service, and sent to you in DWG format. Your architect can use this for the building permit application, which saves you time and money.
- Once these building plans have been approved, we start production. In the meantime, we coordinate practical issues around delivery. The assembly instructions will be sent to you digitally in advance.
- Your DIY steel building kit will be delivered within 8 weeks, and then you can start assembly!
Can I work with Stelcon plates?
Yes, you can work with Stelcon plates, but make sure that the anchor points do not touch the seams. Please note: the finishing pieces that we supply are not specifically made for Stelcon plates, so you have to provide waterproofing yourself. A roofing slab, for example, can solve this.
What are the dimensions of the doors?
Can I come and see a DIY building kit?
Yes, if you would like to come and take a closer look at one of our DIY steel building kits, please get in touch. Our showroom is in Wijnegem, near Antwerp (Belgium). You can always contact us for an appointment.
What is the delivery period?
We deliver your DIY steel building kits after just 8 weeks, because we produce everything ourselves, in-house in Belgium. Please put us to the test: you won’t find faster delivery anywhere on the market.
Can I buy a DIY steel building kit as a private individual?
Yes, you can. FRISOKIT delivers to private individuals, self-employed people and companies.
How much VAT do I pay?
You pay 21% VAT for our DIY structures, if you are registered as a Belgian company. You recover this VAT. Reverse charge VAT applies for deliveries outside Belgium. This means you don’t have to pay VAT in advance provided you have a VAT number.
Where are the DIY steel building kits produced?
In Antwerp, Belgium. FRISOKIT controls the entire design and production process. We take care of the design, production and transport of your DIY building kit. We prepare your kit from start to finish in our own production facilities of more than 30,000 m2.
Which sandwich panels are used?
For the insulated buildings, we use sandwich panels with EPS (expanded polystyrene), with a thickness of 60 or 100 mm. We consciously choose EPS as an insulation material, as this is the only solution that makes the sandwich panels recyclable. The environment and sustainability are of paramount importance to us.

How does the transport work?
We will inform you of the exact delivery date one week in advance. You will receive a message from the transporter one hour before arrival.
A few things to note regarding delivery:
- The delivery address must be accessible for a truck of 13.8 metres. If this is not the case, we will be happy to find a solution together.
- You will need to provide the machinery yourself for unloading your DIY steel building kit. For a flat paved terrain such as concrete, a forklift is sufficient. For other terrains, or if your building is wider than 15 metres, it is best to have a Manitou or something similar. Also, don't forget to have someone on site who is qualified to operate the machinery! Our transporters set aside 2 hours for the unloading of your DIY steel building kit. If circumstances require more time, additional costs will be billed. After delivery, we are also happy to provide assistance if necessary.
What is cold-formed steel?
The advantage of cold-formed galvanised steel (CFS) is that we do not use heat to make the profiles. Why do we prefer cold-formed steel to hot-formed steel? In essence, the base material is the same, but by cold forming in the after-treatment, we improve the strength-related properties. In addition, cold-formed steel is much more ecological and sustainable.
What if I don’t have my building permit and/or loan yet?
You can order a building from us pending a permit or financing. Once you put in the order, we will start drawing up the plans, which you can then send to your architect to apply for the building permit. If something goes wrong, you can always cancel the order for free, with a flat cancellation fee of 500 euros – regardless of the size of your building.
Who draws up the building plans?
We'll take care of that. Our technical service specialists provide all drawings and plans for the structure and foundations. You will receive them in PDF and DWG formats.

Who is responsible for applying for an environmental or building permit?
First check with your municipality whether a permit is required. If so, you must submit the application yourself.
FRISOKIT is happy to help you with this:
- After placing an order, you will receive the building plans (in PDF and DWG) for your FRISOKIT building, which will support your application.
- Are you working with an architect? Then they can use our building plans to submit your application to the municipality.
- Depending on the municipality, it takes between 2 and 6 months to obtain a building permit.
What is the difference between ridge height and gutter height?
The gutter height is the distance from the foundation to the gutter. The ridge height depends on the roof slope, the width of the building and the gutter height. You can calculate the ridge height with this tool:

Does FRISOKIT supply buildings with awnings or canopies?
No, we only supply closed buildings. If you want an open building, please contact FRISOMAT.
Is it possible to have a DIY steel building kit with a flat roof?
Our kits come with a gable roof, of 10° or 22°. Contact FRISOMAT if you need a flat roof.

Does FRISOKIT supply open buildings?
FRISOKIT only supplies closed buildings. In some instances, for example due to local building regulations, steel wall cladding is not permitted.
If that is the case, we will supply you with the building without wall cladding, and you can then clad it yourself with the material of your choice. If you want an open building, please contact FRISOMAT.
In which colours are the DIY steel building kits available?
The standard colour for both the roof and the walls is FC 7016. It is also possible to have the walls executed in FC 9002. The building's interior is always white.

What options can I choose for my DIY steel building kit?
Here's an overview of all the options you can choose from.
What foundations do I need for a FRISOKIT DIY steel building?
The big advantage of FRISOKIT is that our buildings are made of cold-formed steel, so they are lighter without sacrificing strength. More precisely, they are 30% lighter than other conventional steel structures, which means considerable savings for you on your concrete foundation slab. We recommend a concrete slab between 15 and 20 cm thick, with only the long sides possibly having to be reinforced. Of course, the subsurface plays an important role. We always provide you with a foundation plan with the exact dimensions. Always consult your groundworker or architect to assess the situation on site.
What is the lifespan of a FRISOKIT DIY steel building kit?
We've been building since 1978, and have now constructed more than 37,000 buildings worldwide. Because our buildings hardly require any maintenance, they are all still in perfect condition today. The lifespan of your FRISOKIT building is therefore 40 to 50 years.
Does FRISOKIT also assemble the kit?
FRISOKIT produces and supplies DIY steel building kits, but we do not assemble them ourselves. FRISOKIT is part of the FRISOMAT Group. FRISOMAT does assemble steel buildings for various purposes.
What is the truss distance?
Our standard truss distance is 4 metres.
What are the possible dimensions of my building?
Here you will find a handy overview of all dimensions.
What determines the price of my FRISOKIT building?
The price depends on various factors, including dimensions, options and insulation. Please contact your FRISOKIT adviser to discuss this further.
Does FRISOKIT offer an all-in solution for the manufacture, construction and finishing of my project?
No. If you are looking for an all-in solution, please contact FRISOMAT. FRISOKIT designs, produces and supplies DIY building kits.
How should I maintain my Frisokit DIY steel building kit?
Your building is completely maintenance-free. It is made of hot-dip galvanised steel so that it is protected from corrosion. All wall and roof panels have a protective coating, making them dirt-resistant and UV-resistant.
Keep your building in perfect condition with these two tips:
- Empty and clean the gutters every year.
- Regularly lubricate the hinges of all the doors.
Can I disassemble, move or store my DIY steel building kit?
Yes. Thanks to our unique Meccano system, you can completely disassemble our buildings for relocation or storage. You can easily reassemble our buildings at a new location, which gives your FRISOKIT building a second life.
Can I rent a building from FRISOKIT?
We do not rent out buildings at FRISOKIT ourselves. But you can contact our partner Interloods who, like FRISOKIT, is part of the FRISOMAT Group. Interloods rents out warehouses in Belgium and the Netherlands.
Tip: our DIY steel building kits can bedismantled, so you can move or sell them and give them a second or even third life.
Is my DIY steel building kit resistant to wind, rain and snow?
Absolutely. For the building we offer you, we take into account environmental factors such as wind and snow load, so you be assured of a weather-proof solution. For example: a building on the coast requires different specifications than a building in a built-up area. That is why we always ask for the location of the building in advance.
I have submitted my request online via the FRISOKIT website. What happens next?
Thank you for your request! We'll call you as soon as possible to discuss all the details of your project. Based on that conversation, you will receive a tailor-made quote via email. Shortly thereafter, we will discuss your quote with you over the phone. Are you happy with the quote? Then you will receive your DIY steel building kit in 8 weeks! Tip: save our contact details, so you will immediately see that FRISOKIT is calling you.
Do I need an environmental permit (formerly building permit) for my FRISOKIT building?
That differs from region to region. Is it a new building, or a replacement? Ask the local government if a permit application is needed.

Marie Eisendrath
Team Leader Frisokit
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