My Quote (0 total item(s))
My Quote

Currently your quote basket is empty.

If you would like us to quote you a price for any product(s) please select your product(s), quantity required and then follow the on screen instructions to receive a quote.

    Get My Quote Continue Browsing



    Flat Roofs

    Product Type:

      Mineral Fibre - Rock

    Market Sector:

      Building, Roofing

    Knauf Insulation Rocksilk Krimpact Flat Roof Slab & Extra (52E)

    Product Description:

    For the thermal insulation of flat roofs where a medium level of traffic is required, and hence compressive strength is an issue.


    A range of high strength, consistent density, rigid slabs made from rock mineral wool, manufactured using  Krimpact™ technology, specifically designed for use in flat roofing.

    The Krimpact Flat Roof Slab product range includes two slab densities:

    • Krimpact Flat Roof Slab

    • Krimpact Flat Roof Slab Extra

    Krimpact™ technology realigns the mineral wool fibres during manufacture to increase impact strength without dramatically reducing thermal performance - making an ideal product for use in flat roofs.

    Furthermore, Krimpact™ technology gives you a consistent density slab. This ensures better long-term compressive strength, high impact resistance, better thermal performance and a thinner, lighter product compared to other high-strength insulation options.


    Krimpact Flat Roof Slabs are for the thermal insulation of flat roofs. Krimpact Flat Roof Slabs are suitable for use under all kinds of single ply membrane, hot applied bitumen systems and mastic asphalt.

    • Krimpact Flat Roof Slab has high compressive strength, where some occasional loading and impact resistance is required.
    • Krimpact Flat Roof Slab Extra is for use where optimum long term compression performance is required.


    All Krimpact Flat Roof Slabs are suitable for maintenance foot traffic only.

    Krimpact Flat Roof Slabs have thermal conductivities of 0.038 to 0.039 W/mK

    • Excellent thermal performance
    • Superior compression resistance
    • Excellent acoustic insulation
    • Superior fire performance



    M4 Product Table

    Encon Product Code Product Description Unit Type Quantity
    52EFRE1210150 KN KRIMPACT FLAT ROOF EXT 1200x1000x150 SLAB
    52EFRE1210125 KN KRIMPACT FLAT ROOF EXT 1200x1000x125 SLAB
    52EFRE1210105 KN KRIMPACT FLAT ROOF EXT 1200x1000x105 SLAB
    52EFRE1210095 KN KRIMPACT FLAT ROOF EXT 1200x1000x 95 SLAB
    52EFR1210180 KN KRIMPACT FLAT ROOF 1200x1000x180mm SLAB
    52EFR1210145 KN KRIMPACT FLAT ROOF 1200x1000x145mm SLAB
    52EFR1210120 KN KRIMPACT FLAT ROOF 1200x1000x120mm SLAB
    52EFR1210100 KN KRIMPACT FLAT ROOF 1200x1000x100mm SLAB