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 and Size: 1200x600 - 2.16m2
  • Weight: 21.60kg
Our ratings on 19-11-2025:
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


Brand: Knauf Model and Size: 1200mm x 600mm - 5.76m2
Delivery Time: 2 - 5 working days
75mm Knauf Omnifit 35 Glass Wool Slabs are rigid multipurpose, flexible, non-combustible glass mineral wool slab that is designed for friction fitting installation at 600mm spacings. It has excellent thermal, acoustic, and fire resistance. The sound absorption qualities of Knauf Omnifit slabs are re..
Get Best Price
Brand: Knauf Model and Size: 4.2mm x 39mm
Delivery Time: 1 - 2 days
4.2mm x 39mm Aquapanel Maxi SN39 needlepoint screws have been specially developed for fixing Aquapanel Cement Board on to timber and metal frameworks of differing thicknesses. Aquapanel Maxi Screws SN39 can be used for both wall and ceiling applications in interior and exterior applications. Aquapan..
£40.75
£48.90 inc VAT
Add to Cart
140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 400mm (pack of 4)
Guide Price
Brand: Knauf Model and Size: 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
Get Best Price
Brand: Knauf Model and Size: 25kg - bag
Delivery Time: 1 - 2 days
25kg Knauf Plasterboard Adhesive is a multi-purpose gypsum-based adhesive for use with Knauf metal furring channel and for direct bonding of plasterboard and insulating laminates. It can be applied directly to most masonry substrates. The plasterboard is fixed to the substrate using the 'Dot and Dab..
£13.13
£15.76 inc VAT
Add to Cart
100mm Earthwool Flexible Insulation Slabs Knauf (pack of 6) 100mm Earthwool Flexible Insulation Slabs Knauf (pack of 6)
Guide Price
Brand: Knauf Model and Size: 1200x600 = 4.32m2
Delivery Time: 2 - 3 working days
100mm Earthwool Flexible Insulation Slab is a high-quality insulation product engineered to deliver exceptional thermal and acoustic performance. Crafted from premium glass mineral wool, this insulation is straightforward to install and boasts excellent fire resistance, making it an ideal choice for..
Guide Price: £43.19
£51.83 inc VAT
Get Best Price
Brand: Knauf Model and Size: 600mm x 1200mm - 0.72m2
Delivery Time: TBC
18mm Knauf Gifafloor 18 is a high performance high density gypsum fibreboard floor panel used to create raised floors over pedestals with incredible strength. it is a high-quality, interlocking tongue and grooved floor board system bonded together to form a flat screed like surface. Knauf Gifafloor ..
Get Best Price
This product is listed in the following categories and systems (click to show).