Knauf Rocksilk RS140 75mm Building Slab

The 75mm Rocksilk RS140 Knauf Rock Mineral Wool Insulation Slab is a standard-density (140kg/m3) building material, non-combustible and specially designed for versatile applications with outstanding fire performance, classified as Euroclass A1—the highest rating for non-combustible materials.

With dimensions of 1200mm x 600mm, the Knauf RS140 rocksilk insulation slab delivers exceptional thermal and acoustic performance suitable for both new construction and renovation projects.

These slabs are odourless, non-hygroscopic, and rot-proof, containing no CFCs or HCFCs, and resist the growth of fungi, mould, or bacteria.

The unfaced 75mm Knauf RS140 insulation slab features a certified thermal conductivity (λ - lambda value) of 0.034W/mK for reliable thermal efficiency.

With a density of 140kg/m3, the 75mm RS140 insulation slab works well for numerous applications, such as internal partitions, timber and metal studs, and placement between timber rafters and floor joists.

These 75mm Knauf building slabs provide excellent sound absorption characteristics, delivering significant sound reduction.

Installation is straightforward—simply cut and shape using a large-bladed knife or saw. The 75mm Knauf Rocksilk RS140 insulation slab is practical and easy to work with on site.

Product specification

• Brand: Knauf®
• Model: 75mm Rocksilk RS140
• Thickness: 75mm
• Length: 1200mm
• Width: 600mm
• Dimensions: 1,200mm x 600mm x 75mm
• Board Coverage: 0.72m2
• Pack Coverage: 2.16m2
• Pack Quantity: 3
• R-Value: 2.20m2K/W
• Thermal Conductivity: 0.034W/mK
• Density: 140kg/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 suit a wide range of uses, including pitched roof constructions between rafters, intermediate floors, separating floors, internal stud partitions, and light steel frame infill. These slabs are frequently used in OEM (Original Equipment Manufacturer) applications for creating thermal, acoustic, and fire products. With their non-combustible properties, Rocksilk® Building Slabs are available in a range of densities from 45kg/m3 up to 140kg/m3, meeting the needs of many different applications.

Benefits

• One slab type works across multiple applications.
• Factory-applied foil or tissue facing options are available, opening up solutions for a broad spectrum of uses.
• Mineral wool construction delivers superior sound absorption and reduction compared to many alternative insulants.
• Made from rock mineral wool with a melting temperature exceeding 1000°C, providing extended fire resistance compared to other common insulants.

Info

Browse our full Knauf Insulation range and filter by thickness or coverage on the left-hand side of the page. For advice on product suitability for your project or to request a quantity discount quotation, please contact us by phone on +4402038839057, email sales@insulationbee or use Live Chat - Lowest UK Knauf Loft Insulation Prices.