Rocksilk® Flat Roof Slab Extra

Rocksilk® Flat Roof Slab Extra is a BBA certified Rock Mineral Wool slab with the strongest mechanical performance in the range, designed for use in mechanically fixed flat roof build ups.

It is non-combustible with the best possible Euroclass A1 reaction to fire classification, and is manufactured using Knauf Insulation's Krimpact® Technology.

Features and benefits:

• Good thermal performance.
• Non-combustible A1 Euroclass Reaction to Fire classification.
• Slabs contain a special additive to ensure their water repellency.
• Manufactured using Knauf Insulation's Krimpact® Technology for high levels of compressive strength and durability.
• Excellent sound absorption and reduction characteristics.
• The nature of Rock mineral wool allows slabs to knit together at joints.
• Dimensionally stable.
• Compatible with a wide range of single ply membranes.
• `C` generic BRE Green Guide rating.

Certification:

• BBA Certificate 08_4526 Rocksilk Krimpact Flat Roof Slab.
• Eurofins Gold.
• Euroclass A1 Reaction to Fire Classification.
• CE Marking.
• UKCA.
• EN 15804.
• EUCEB.
• Made in Britain.
• RAL.

Durability:

Rocksilk® Flat Roof Slabs are odourless, rot proof, non-hygroscopic, do not sustain vermin and will not encourage the growth of fungi, mould or bacteria. The product will have a life equivalent to that of the roof structure in which it is incorporated.

Standards and Certification

Rocksilk® Flat Roof Slabs have been assessed by the British Board of Agrément (BBA) under Certificate 08/4526 for use as a thermal insulation layer on limited access flat roofs with concrete, timber or metal decks. The certification offers contractors and specifiers utmost confidence that Rocksilk® Flat Roof Slabs are fit for their intended use and will have a life equivalent to that of the roof structure in which it is incorporated, provided that it is stored and installed correctly. Rocksilk® Flat Roof Slabs are manufactured in accordance with BS EN 13162, ISO 50001 Energy Management Systems, ISO 14001 Environmental Management Systems, and ISO 9001 Quality Management Systems, as certified by TÜV Nord.

Real performance:

Glass and Rock Mineral Wool are easier to install correctly than other insulants such as rigid boards because they adapt to any slight imperfections in the substrate and knit together, eliminating any air gaps. Evidence shows the absence of air gaps is crucial to achieving real performance in the relevant application.

Environmental:

Rocksilk® Flat Roof Slabs contain no ozone-depleting substances or greenhouse gases. For further environmental information consult the relevant Environmental Product Declaration, available on our website.

Moisture

The physical and chemical characteristics of the fibres are unaltered by wetting. Therefore the thermal properties of Rocksilk® RainScreen Slab are not affected by exposure to moisture and the product will perform as expected once dry.

Handling and storage

Rocksilk® Flat Roof Slabs are easy to handle and install, being lightweight and easily cut to size, where necessary. Rocksilk® Flat Roof Slabs are supplied loose on a hooded (4-LDPE) pallet which is designed for short term protection only. For longer term protection on site, the product should either be stored indoors, or under cover and off the ground. Rocksilk® Flat Roof Slabs should not be left permanently exposed to the elements.