Knauf - Rocksilk® Soffit Linerboard Standard - Knauf-Insulation-RockSilk-Soffit-Linerboard-Standard
Knauf - Rocksilk® Soffit Linerboard Standard - Knauf-Insulation-Exposed-Soffit-Floor-Standard
Knauf - Rocksilk® Soffit Linerboard Standard - Knauf-Insulation-RockSilk-Soffit-Linerboard-Standard
Certificates and Standards
EUCEBEuroclass A1 Fire Classification UKMade in BritainEPDCE

Rocksilk® Soffit Linerboard Standard

Rock Mineral Wool
Specify on NBS
  • Available both unfaced and with a black tissue facing, for use in non-exposed soffit applications.
  • Provides a solution to upgrade thermal performance of existing floors without reducing floor height.
  • Can be installed without the need to access areas above the floor.
  • Manufactured from mineral wool which provides the best levels of sound absorption and reduction compared to other mainstream insulants to reduce the sound transfer between storeys.
Applications
CeilingFloor
Knauf - Knauf-Insulation-RockSilk-Soffit-Linerboard-Standard
Rocksilk® Soffit Linerboard StandardRock Mineral Wool

Description & Details

Rocksilk® Soffit Linerboard Standard is a rock mineral wool slab, designed to insulate non-exposed structural soffits in applications such as underground car parks. It is non-combustible with the best possible Euroclass A1 reaction to fire classification, and is manufactured using our unique bio-based binder, ECOSE® Technology.

  • Available both unfaced and with a black tissue facing, for use in non-exposed soffit applications.
  • Provides a solution to upgrade thermal performance of existing floors without reducing floor height.
  • Can be installed without the need to access areas above the floor.
  • Manufactured from mineral wool which provides the best levels of sound absorption and reduction compared to other mainstream insulants to reduce the sound transfer between storeys.
  • Available with optional fixings which match the colour of Rocksilk® Soffit Linerboard Standard and Extra.

Structural soffit floor

Documents

Product Data Sheet
Rocksilk® Soffit Linerboard Datasheet.PDF / Feb 2025 / 970.00 KB / 5 pages
Rocksilk® Soffit Linerboard Fixings Datasheet.PDF / Sep 2024 / 1.61 MB / 5 pages
Brochure
Knauf Insulation Solutions Guide UK.PDF / - / 21.46 MB / 167 pages
Manual
Rocksilk® Soffit Linerboard Installation Guide.PDF / Feb 2025 / 2.28 MB / 22 pages
Safety Data Sheet
Rock Mineral Wool with ECOSE® Technology - Safety Data Sheet.PDF / Sep 2023 / 240.00 KB / 8 pages
Environmental Product Declaration
Rocksilk® RS80 & Soffit Linerboard Std Unfaced EPD-IES-0031082.PDF / - / 1.02 MB / 19 pages
Sustainability
Rock Mineral Wool - BREEAM Helpsheet.PDF / Feb 2025 / 40.00 KB / 1 page

Declaration of Performance

  • Declaration of performance: R4208MPCPR
  • Declarations of performance (DoPs), safety data sheets (SDS), and environmental product declarations (EPD) for our offered products can be found via a central Knauf Insulation database.
Knauf Insulation DoP, SDS, EPD Files

Technical Data

DescriptionValueUnitNorm
Thermal conductivity declared
0.034
W/(mK)
Reaction to fire
A1
EN 13501-1

Product Variants & Packaging

Rocksilk® Soffit Linerboard Standard

Material numberEAN / GTINThicknessWidthLengthPieces per packm2 per packPieces per palletPacks per palletm² per pallet
673083
5012062053066
50 mm
600 mm
1,200 mm
6 pc/pac
4.32 m²/pac
96 pc/pal
16 pac/pal
69.12 m²/pal
673084
5012062053073
75 mm
600 mm
1,200 mm
4 pc/pac
2.88 m²/pac
64 pc/pal
16 pac/pal
46.08 m²/pal
675217
5012062055558
130 mm
600 mm
1,200 mm
1 pc/pac
0.72 m²/pac
40 pc/pal
40 pac/pal
28.80 m²/pal
675216
5012062055084
160 mm
600 mm
1,200 mm
1 pc/pac
0.72 m²/pac
32 pc/pal
32 pac/pal
23.04 m²/pal
672812
5012062052847
185 mm
600 mm
1,200 mm
1 pc/pac
0.72 m²/pac
28 pc/pal
28 pac/pal
20.16 m²/pal
469973
5012061909777
220 mm
600 mm
1,200 mm
1 pc/pac
0.72 m²/pac
20 pc/pal
20 pac/pal
14.40 m²/pal
Knauf | Rocksilk® Soffit Linerboard Standard Insulation | Knauf