75mm Knauf Rocksilk RS80 Building Slab

The 75mm Rocksilk RS80 Knauf Rock Mineral Wool Insulation Slab is a standard-density (80kg/m3) building material, non-combustible and engineered for diverse applications with outstanding fire performance, achieving Euroclass A1—the highest classification for non-combustible products.

Featuring dimensions of 1200mm x 600mm, the Knauf RS80 rocksilk insulation slab delivers excellent thermal and acoustic performance suitable for both new builds and refurbishment work.

These slabs are odourless, non-hygroscopic, and rot-resistant, manufactured without CFCs and HCFCs, and resist fungal, mould, and bacterial growth.

With a certified thermal conductivity (λ - lambda value) of 0.034W/mK, the 75mm Knauf RS80 unfaced insulation slab provides reliable thermal efficiency.

Produced at a density of 80kg/m3, the 75mm RS80 insulation slab works well for numerous applications, such as internal partitions, timber and metal studs, and installation between timber rafters and floor joists.

The 75mm Knauf building slabs feature excellent sound absorption properties, delivering significant sound reduction.

Installation is straightforward—simply cut and shape using a large-bladed knife or saw, making 75mm Knauf Rocksilk RS80 insulation slab practical to fit.

Product specification

• Brand: Knauf®
• Model: 75mm Rocksilk RS80
• 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: 80kg/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 flexible products suitable for many applications, including pitched roof constructions where they fit 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-rated products, these slabs benefit from non-combustibility. 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 suits multiple applications.
• Factory-applied foil or tissue facing options are available, offering flexibility for a wide range of uses.
• Rock mineral wool construction provides superior sound absorption and noise reduction compared to many other insulation types.
• Made from rock mineral wool with a melting point above 1000°C, delivering extended fire resistance compared to standard insulants.

Info

Explore 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 quotation, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Best UK Knauf Loft Insulation Prices.