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    Cladding InsulationWall Insulation - External

    Product Type:

      Mineral Fibre - Rock

    Market Sector:

      Building, Roofing

    Knauf Insulation Earthwool RainScreen Slab (17S)

    Product Description:

    For the thermal insulation of rainscreen cladding systems.


    RainScreen Slab is a rock mineral wool slab containing a water repellent additive, specially developed for rainscreen cladding applications.

    Earthwool Rainscreen Slab BGV (Black Glass Veil): Previously available as a made to order product, RainScreen Slab BGV is now available as a stock product designed for use in perforated rainscreen systems offering a robust black glass veil facing.


    RainScreen Slab is used for the thermal insulation of rainscreen cladding systems.

    RainScreen cladding systems typically comprise outer cladding panels that are bolted to a supporting framework of rails, which are supported by cleats fixed back to the building structure. A layer of insulation is fixed independently against the building substructure using proprietary insulation fasteners.

    An airspace separates the insulation from the outer cladding panels. This allows wind driven rain to run down the back of the rainscreen panels, providing additional protection to the insulation layer.

    RainScreen Slab is recommended for this application, as it is lightweight but rigid enough to resist the compression forces generated when installing the insulation slabs to the masonry substrate. The water repellent additive in RainScreen Slab also provides a further line of defence against rain penetration of the external wall.


    • Lightweight but rigid
    • Non-combustible and Euroclass A1
    • Contains water repellent additive
    • BBA Certified


    Ecose Technology ensures an evironmentally friendly formaldehyde-free binder made from rapidly renewable bio-based materials.

    RainScreen Slab has a thermal conductivity of 0.034 W/mK.


    M4 Product Table

    Encon Product Code Product Description Unit Type Quantity
    17SA1206120 KN ROCK RAINSCREEN 1200x 600x120mm (4) PACK
    17SA1206150 KN ROCK RAINSCREEN 1200x 600x150mm (3) PACK
    17SA1206100 KN ROCK RAINSCREEN 1200x 600x100mm (4) PACK
    17SA1206180 KN ROCK RAINSCREEN 1200x 600x180mm (3)
    17SA1206075 KN ROCK RAINSCREEN 1200x 600x 75mm (6) PACK
    17SA1206050 KN ROCK RAINSCREEN 1200x 600x 50mm (8) PACK
    17SB1206150 KN ROCK RAINSCREEN BGV 1200x 600x150 (3)
    17SB1206120 KN ROCK RAINSCREEN BGV 1200x 600x120 (4)
    17SB1206100 KN ROCK RAINSCREEN BGV 1200x 600x100 (4)

    Associated Products: