The leak-proof and highly insulating Finnfoam allows you to easily insulate your attic and save space in the process. Due to the completely consistent cell structure of Finnfoam, separate wind-proofing or vapor barriers is not needed in the structure. Due to its strength, the Finnfoam insulation also does not need separate additional studs below the roof trusses, which allows you to create a continuous thermal insulation below the trusses, minimizing thermal bridging.
With the leak-proof and highly insulating Finnfoam, you can insulate your attic easily, saving space in the process. Insulating with FL-K600 is quick in new construction, and the product is also suitable for renovation sites with appropriate stud spacing.
In old buildings, the first layer of insulation is inserted between the roof trusses and fixed in place with flexible PU foam. A continuous layer of the sturdy Finnfoam insulation is installed below the trusses bonding the seams with the previous layer, thus eliminating thermal bridging!
Finnfoam has a 210 mm thick insulation panel that is intended for insulating roofs and attics. The Finnfoam panel is primarily designed for new construction, as the self-sealing construction of the panels allows for ±10 mm of variance in the spacing of the roof trusses. For roofs, the insulation panel is designed for a spacing of 600 mm. Using Finnfoam, you can provide the necessary wind-proofing, thermal insulation, and vapor barrier with a single installation. Further information about the panel can be found in the Walls section.
Seams must be sealed carefully
Finnfoam can easily be cut into appropriately sized pieces, as the material does not crumble or produce dust. The leak-proof construction prevents warm air that rises up from escaping the structure. Air cannot flow through the fully consistent and closed cell structure, which means that you should focus your attention on sealing the seams. With a flexible polyurethane foam sealant, you can create a continuous and leak-proof structure, which will also be most effective for soundproofing.
A flexible PU foam can also be used to glue Finnfoam pieces together, which allows you to minimize wasted material. The U value of the structure does not include the airtightness of the structure. However, a leak-proof structure (leakage rate of 1) will consume 15% less energy than a structure whose airtightness at a more conventional level (leakage rate of 4)
With the leak-proof and highly insulating Finnfoam, you can insulate your attic easily, saving space in the process. A continuous layer of insulation is constructed below the roof truss from sturdy Finnfoam – no thermal bridging!
Ventilation gap is important
Moisture cannot reach inside the Finnfoam panels and thus their ventilation is not important. However, ensuring that the roof trusses remain dry requires ventilation, and you should always leave a ventilation gap between the roof covering and Finnfoam (approx. 50 mm).