Menu
Menu
Your Cart

100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)

100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
Guide Price
100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)
Guide Price: £42.40 (£50.88 inc VAT)
Price per m2: £19.63/m2 (£23.56 inc VAT)
5 or more £41.71 (£50.05 inc VAT)
10 or more £41.01 (£49.21 inc VAT)
20 or more £39.99 (£47.99 inc VAT)
  • Product Code: A1-536
  • Delivery Time: 2 - 3 working days
  • Brand: Knauf
  • (Tech. support: 08000304135)
  • Model: 1200x600 - 2.16m2
  • Weight: 21.60kg
Our ratings on 27-01-2026:
Google My Business Reviews
4.8 out of 5
Show other thicknesses

100mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 3)

Width: 600mm
Length: 1200mm
Pack Quantity: 3
Pack Coverage: 2.16m2
Density: 100kg/m3
Weight/m2: 10kg
Weight: 21.6kg
Thermal Conductivity: 0.035W/mK
R-Value: 2.85m2K/W
Fire Rating (Reaction to Fire): A1(Non-combustible)

100mm Knauf Rocksilk RS100 Universal Insulation Slab is a high-performance mineral wool insulation product suitable for a variety of applications. Manufactured from rock mineral wool using Knauf's unique bio-based ECOSE Technology binder, it provides excellent thermal and acoustic insulation properties. The mineral wool construction offers higher levels of sound absorption and reduction than other mainstream insulants. The slab has a higher density and a good thermal conductivity, helping to improve the energy efficiency of buildings and reduce heating and cooling costs. Knauf Rocksilk RS100 is non-combustible with Euroclass A1 reaction to fire classification, and the rock mineral wool has a melting temperature of over 1000°C to provide longer periods of fire resistance than other mainstream insulants. Knauf Rocksilk RS100 is also resistant to mould, mildew, and vermin, ensuring long-lasting performance and durability. Knauf Rocksilk RS100 is easy to cut and install, making it a versatile choice for insulating walls, floors, and roofs in both new build and refurbishment projects.

APPLICATION

Rocksilk RS100 Universal Slabs are used for a wide range of thermal and acoustic insulation applications in buildings, building services, and industry. This product can be used for insulating:
  • Internal partitions
  • Between timber and metal studs
  • Rafters and floor joists

CHARACTERISTICS

  • Manufactured from rock mineral wool using Knauf's bio-based ECOSE Technology binder
  • Provides excellent thermal and acoustic insulation performance
  • Mineral wool construction offers higher levels of sound absorption and reduction compared to other mainstream insulants
  • Density of 100kg/m³ and thermal conductivity of 0.035 W/mK
  • Non-combustible with Euroclass A1 reaction to fire classification
  • Rock mineral wool has a melting temperature over 1000°C for longer fire resistance
  • Odourless, non-hygroscopic, rot-proof, do not sustain vermin, and will not encourage the growth of fungi, mould, or bacteria
  • Lightweight
  • Easy to cut and install, making it versatile for walls, floors, and roofs
  • Sustainable insulation solution

CERTIFICATION

Manufactured in accordance with:

  • In conformity with BS EN 13162
  • ISO 50001 Energy Management Systems
  • ISO 14001 Environmental Management Systems
  • ISO 45001 Occupational Health and Safety Management Systems
  • ISO 9001 Quality Management Systems


140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 400mm (pack of 4)
Guide Price
Brand: Knauf Model: 1200mm x 400mm - 1.92m2
Delivery Time: 2 - 5 working days
140mm Knauf Omnifit 35 Glass Wool Slabs are rigid multipurpose, flexible, non-combustible glass mineral wool slab that is designed for friction fitting installation at 400mm spacings. It has excellent thermal, acoustic, and fire resistance. The sound absorption qualities of Knauf Omnifit slabs are r..
Guide Price: £31.03
£37.24 inc VAT
15mm Knauf Fireboard - High Performance Plasterboard 1200mm x 2400mm
Guide Price
Brand: Knauf Model: 1200mm x 2400mm - 2.88m2
Delivery Time: 5 - 10 Working Days
15mm Knauf Fireboard is a fleece-lined high performance square-edge plasterboard that provides up to two hours of fire protection in structural steel encasement. It is also ideal for use as fillets in deflection head details (an elastic polyurethane foam with intumescent firestop additives acts as a..
Guide Price: £58.18
£69.82 inc VAT
Brand: Knauf Model: 1200x900mm - 54m2
Delivery Time: In Stock 1-2 working days
12.5mm Knauf Aquapanel Exterior Cement Board provides a solid, dry base that can withstand the extreme weathering effects of wind, rain, and snow. It makes an ideal substrate for directly applied render finishes and can be used for exterior walls in ventilated systems, exterior ceilings, and soffits..
£1,268.13
£1,521.76 inc VAT
Brand: Knauf Model: 1200x455mm - 2.18m2
Delivery Time: 3 - 7 days
150mm Knauf DriTherm 32 Ultimate Cavity Slab is a high-performance insulation product specifically designed for use in external full-fill masonry cavity walls. These water-repellent glass mineral wool slabs provide exceptional thermal performance, making them an ideal choice for enhancing energy eff..
£48.29
£57.95 inc VAT
100mm Rocksilk RS60 Universal Insulation Slab Knauf (pack of 4) 100mm Rocksilk RS60 Universal Insulation Slab Knauf (pack of 4)
Guide Price
Brand: Knauf Model: 1200x600 - 2.88m2
Delivery Time: 1 - 2 days
100mm Knauf Rocksilk RS60 Universal Insulation Slab is a high-performance mineral wool insulation product suitable for a variety of applications. Manufactured from rock mineral wool using Knauf's unique bio-based ECOSE Technology binder, it provides excellent thermal and acoustic insulation properti..
Guide Price: £41.24
£49.49 inc VAT
Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane  - 15 Kg
Guide Price
Brand: Knauf Model: 15kg
Delivery Time: In Stock 1-2 working days
Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane is a one-component, ready-to-use highly plastic liquid waterproof tanking membrane for wall and floor surfaces under ceramic tiles. Although the tiles themselves are impermeable to water, the joints between them are not 100% waterproof. Even w..
Guide Price: £77.00
£92.40 inc VAT
This product is listed in the following categories and systems (click to show).