March 2014
Rocksilk ® EWI Slab
For external walls
Description
Rocksilk EWI Slabs are high strength, rock mineral wool slabs with a water
repellent additive specifically designed for use in external wall insulation systems.
Application
Rocksilk EWI Slabs are specifically for use with external wall insulation systems.
The slabs can be either adhered and mechanically fixed or just mechanically fixed
to the substrate then overlaid with a mesh and render system to the designers/
system suppliers specification. The slabs offer a solid and robust supporting
substrate for the render and no fire stops are required.
NOTE: It is the responsibility of the customer and end user to satisfy themselves, that this product is suitable for use and
fit for purpose with the selected system. The end user is relying on their own expertise and judgements as to whether the
insulation is suitable for their needs.
Performance
Technical
Data
Thermal
Earthwool EWI Slab has a thermal
conductivity of 0.040W/mK.
Fire
Rocksilk EWI Slab are classified as
Euroclass A1 to BS EN ISO 13501-1.
Benefits
• Offers solid support to render.
• No fire stops required.
• Excellent thermal performance.
• Excellent acoustic insulation.