Knauf Rocksilk RS100 100mm Building Slab

The Knauf Rocksilk RS100 100mm Mineral Wool Insulation Slab is a standard-density (100kg/m3) building material that's non-combustible and engineered for diverse applications with outstanding fire performance, achieving Euroclass A1—the highest rating for non-combustible materials.

With dimensions of 1200mm x 600mm, the Knauf RS100 rocksilk insulation slab delivers exceptional thermal and acoustic performance for both new builds and refurbishment work.

These slabs are odour-free, non-hygroscopic, and rot-resistant, containing no CFCs or HCFCs, and won't support the growth of fungi, mould, or bacteria.

The unfaced 100mm Knauf RS100 insulation slab features a certified thermal conductivity (λ - lambda value) of 0.034W/mK for reliable thermal efficiency.

With a density of 100kg/m3, the 100mm RS100 slab works well for many applications, including internal partitions, timber and metal studs, and placement between timber rafters and floor joists.

The 100mm Knauf building slabs provide excellent sound absorption properties, delivering significant sound reduction benefits.

Installation is straightforward—simply cut and shape using a large-bladed knife or saw, making 100mm Knauf Rocksilk RS100 insulation slab practical and user-friendly.

Product specification

• Brand: Knauf®
• Model: 100mm Rocksilk RS100
• Thickness: 100mm
• Length: 1200mm
• Width: 600mm
• Dimensions: 1,200mm x 600mm x 100mm
• Board Coverage: 0.72m2
• Pack Coverage: 2.88m2
• Pack Quantity: 3
• R-Value: 2.20m2K/W
• Thermal Conductivity: 0.034W/mK
• Density: 100kg/m3
• Colour: Brown
• Material: Rock mineral wool
• Fire Classification: Euroclass A1
• Vapour Resistivity: 5.00MNs/g.m.
• Fire Reaction: Non-combustible
• Building Regulations: Class '0'
• Finish: Unfaced
• Shipping method: Articulated Vehicle ǀ Courier
• Applications: Floor ǀ Wall ǀ Roof ǀ Partitions
• Foil faced: No
• ECOSE Technology: Yes
• ETA Notification: Yes
• Features: Thermal and Acoustic Insulation Performance
• Manufacturer: Knauf Rocksilk®

Made to order Facings

For a factory applied foil or tissue facing please request a quotation using the website form or by calling our agents. We do offer single side or double side foil/tissue facings.

Applications

Rocksilk Building Slabs are flexible products suited to many applications, from pitched roof constructions between rafters to intermediate floors, separating floors, internal stud partitions, and light steel frame infill. They're commonly used in OEM (Original Equipment Manufacturer) applications for manufacturing thermal, acoustic, and fire products. Being non-combustible, Rocksilk® Building Slabs come in a range of densities from 45kg/m3 up to 140kg/m3, covering a wide variety of project needs.

Benefits

• One slab type handles multiple applications across your project.
• Factory-applied foil or tissue facing options are available, delivering solutions for a comprehensive range of uses.
• Made from mineral wool, it provides superior sound absorption and noise reduction compared to many other mainstream insulation products.
• Manufactured from rock mineral wool with a melting temperature above 1000°C, giving extended fire resistance performance compared to many alternative insulants.

Info

Browse our full Knauf Insulation range and filter by thickness or coverage using the left-hand side options. To discuss product suitability for your project or request a quantity discount quotation, please contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK Knauf Loft Insulation prices.