Knauf Rocksilk RS100 75mm Building Slab

The 75mm Rocksilk RS100 Knauf Rock Mineral Wool Insulation Slab is a standard-density (100kg/m3) building material that's non-combustible and engineered for flexible applications with exceptional fire performance, achieving Euroclass A1—the highest rating for non-combustible products.

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

These slabs are odourless, non-hygroscopic, and rot-resistant, containing no CFCs or HCFCs, and resist fungal, mould, and bacterial growth.

The 75mm Knauf RS100 unfaced insulation slab features a certified thermal conductivity (λ - lambda value) of 0.034W/mK for reliable thermal performance.

With a density of 100kg/m3, the 75mm RS100 slab works well in various settings, such as internal partitions, timber and metal stud walls, and between timber rafters and floor joists.

The 75mm Knauf building slabs provide excellent sound absorption qualities, delivering meaningful sound reduction benefits.

Installation is straightforward—simply cut and shape using a large-bladed knife or saw for quick 75mm Knauf Rocksilk RS100 placement.

Product specification

• Brand: Knauf®
• Model: 75mm Rocksilk RS100
• Thickness: 75mm
• Length: 1200mm
• Width: 600mm
• Dimensions: 1,200mm x 600mm x 75mm
• Board Coverage: 0.72m2
• Pack Coverage: 2.88m2
• Pack Quantity: 4
• 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

75mm Rocksilk Building Slabs are adaptable products suited to numerous applications, including pitched roof work between rafters, intermediate floors, floor separation, internal stud partitions, and light steel frame infill. Commonly used in OEM (Original Equipment Manufacturer) applications for creating thermal, acoustic, and fire-resistant products, these slabs benefit from their non-combustible nature. Rocksilk® Building Slabs come in various densities ranging from 45kg/m3 to 140kg/m3, meeting the needs of many different projects.

Benefits

• One slab type handles multiple applications effectively.
• Available with factory-applied foil or tissue facing options, opening up possibilities for varied project requirements.
• Made from mineral wool, it provides superior sound absorption and noise reduction versus other common insulation types.
• Crafted from rock mineral wool with a melting point above 1000°C, delivering extended fire resistance compared to many alternative insulants.

Info

Browse our full Knauf Insulation range and refine by thickness or coverage using the filters on the left. For advice on product suitability for your project or to request a bulk discount quote, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK Knauf Loft Insulation prices.