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    1. Home
    2. Applications
    3. Supplementary thermal insulation
    4. FF-PIR for renovation and supplementary thermal insulation of ceilings and walls
    • Frost insulation
    • Basement wall
    • Foundations
    • Walls
    • Intermediate floor
    • Roof
    • Insulating the ceiling and walls of an older attic
    • Supplementary thermal insulation
      • Supplementary thermal insulation for walls
      • FF-PIR for renovation and supplementary thermal insulation of ceilings and walls
    • Roads and yard areas
    • Pipe trenches
    • Sauna

    FF-PIR for renovation and supplementary thermal insulation of roof and walls

    US-PIR-lisalammoneristys-we.jpgThe FF-PIR insulation products are suitable for use in renovating exterior walls and roofs. In roofs, the existing insulation can be fully replaced with FF-PIR insulation products. Another option is to install a new insulation panels on the bottom surface of roof supports as a continuous layer, sealing the seams with an elastic foam sealant and tape. The thickness of the insulation is determined either on the basis of the desired U value or by maximizing the utilization of available space.

    Vapor barrier and insulation panel in one product

    For exterior walls, the FF-PIR insulation panels are installed on the interior side of the existing structure. Within the structure, the insulation panel will function as both a vapor barrier and supplementary thermal insulation without requiring additional frameworks. The FF-PIR 40/70 GYL products, which consist of a 30 or 60 mm insulation panel to which a 9 mm gypsum board with tapered edges has been glued, can also be used as interior insulation panels for walls. Using GYL panels will significantly speed up the installation process, as a single work element produces both thermal insulation and gypsum boarding. The mechanical attachment of the panels is carried out according to the instructions provided by gypsum board manufacturers. FF-PIR 40 ALS is another product specifically designed for interior supplementary thermal insulation. The thickness of the panel is 40 mm, and it measures at 600 x 2,600 mm. When joining two panels, a 20 x 100 board can be embedded into the joint. Use an elastic foam sealant and work carefully when constructing supplementary thermal insulation.

    Exterior walls      
    Framework Insulation/framework FF-PIR u-value W/m2K
    Wood Sawdust 100 mm FF-PIR GYL40 0,40
    Wood Sawdust 100 mm FF-PIR GYL 70 0,28
    Wood Sawdust 100 mm FF-PIR 90 ALK 0,14
    Wood Sawdust 100 mm FF-PIR 30 ALK 0,23
           
    Roofs      
    Framework Insulation/framework FF-PIR u-value W/m2K
    Wood Mineral wool 200 mm FF-PIR 30 ALK 0,16
    Wood Mineral wool 300 mm FF-PIR 90 ALK 0,09
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