Rockwool Mineral Wool External Insulation Boards

Rockwool mineral wool boards are mostly made from volcanic ash and are manufactured with a special water repellant additive for exterior use.

We prefer Knauf Rocksilk boards as they are high quality and have a crimped surface to aid the backing render that is trowelled on to them.

Knauf Rocksilk

These boards have the following characteristics:

CFC free – environmentally friendly
High Density – so good impact resistance
Class 1 Fire Resistance
Vapour permeable – highly breathable
40mm to 300mm thickness available
60mm depth = 0.43 U value on 9 inch solid walls
Suitable for mineral and silicate modern render systems

Posted in: Rockwool Mineral Insulation Boards

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