Knauf - Rocksilk® Flat Roof Slab - Knauf-Insulation-Rocksilk-Flat-Roof-Slab
Knauf - Rocksilk® Flat Roof Slab - Knauf-Insulation-Flat-Roof-Mechanically-Fixed-Single-Ply
Knauf - Rocksilk® Flat Roof Slab - Knauf Insulation Flat Roof FL01-Solution-UK
Knauf - Rocksilk® Flat Roof Slab - Flat Roof FL01 ConcreteDeck
Knauf - Rocksilk® Flat Roof Slab - Flat Roof FL01 ConcreteDeck Solution
Knauf - Rocksilk® Flat Roof Slab - Knauf Insulation Flat Roof FL01 TimberDeck COLDROOF-Solution-UK
Knauf - Rocksilk® Flat Roof Slab - Knauf Insulation Flat Roof FL01 TimberDeck-Solution-UK
Knauf - Rocksilk® Flat Roof Slab - Flatroof_Lifestyle_Cutaway
Knauf - Rocksilk® Flat Roof Slab - Knauf-Insulation-Rocksilk-Flat-Roof-Slab
Certificates and Standards
EUCEBEuroclass A1 Fire Classification UKMade in BritainCEBBA Agrément 08/4526 UKEPDFM APPROVED

Rocksilk® Flat Roof Slab

Rock Mineral Wool
Specify on NBS
  • Holds an Agrément certificate by the BBA (certificate 08/4526) for use in multiple build-ups.
  • Compatible with a wide range of single ply membranes.
  • Manufactured from mineral wool which provides the best levels of sound absorption and reduction compared to other mainstream insulants to reduce the drumming effects of rainfall.
  • Manufactured using Knauf Insulation's Krimpact® Technology for high levels of compressive strength and durability
Applications
Flat roof

Description & Details

Rocksilk® Flat Roof Slab Extra is a rock mineral wool slab with the highest mechanical performance in the range, designed for use in mechanically-fixed flat roof build-ups onto all types of roof deck. It is non-combustible with the best possible Euroclass A1 reaction to fire classification, and is manufactured using our Krimpact® Technology.

  • Holds an Agrément certificate by the BBA (certificate 08/4526) for use in multiple build-ups.
  • Compatible with a wide range of single ply membranes.
  • Manufactured from mineral wool which provides the best levels of sound absorption and reduction compared to other mainstream insulants to reduce the drumming effects of rainfall.
  • Manufactured using Knauf Insulation's Krimpact® Technology for high levels of compressive strength and durability
  • Manufactured with a water-repellent addititve to prevent moisture ingress.

Flat roof

Documents

Product Data Sheet
Rocksilk® Flat Roof Slab Datasheet.PDF / - / 620.00 KB / 5 pages
Brochure
Acoustic Insulation - What You Need to Know.PDF / Jan 2025 / 3.47 MB / 3 pages
Knauf Insulation Solutions Guide UK.PDF / - / 21.46 MB / 167 pages
Environmental Product Declaration
Rocksilk® Flat Roof Slab EPD-IES-0013354.PDF / Dec 2024 / 1.09 MB / 19 pages
Sustainability
Rock Mineral Wool - BREEAM Helpsheet.PDF / Feb 2025 / 40.00 KB / 1 page

Declaration of Performance

  • Declaration of performance: R4208HPCPR
  • 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

Certificates

Knauf Insulation Rocksilk® Flat Roof Slab - BBA Certificate - 08/4526.PDF / Jan 2025 / 540.00 KB / 1 page

Technical Data

DescriptionValueUnitNorm
Thermal conductivity declared
0.039
W/(mK)
Reaction to fire
A1
EN 13501-1

Product Variants & Packaging

Rocksilk® Flat Roof Slab

Material numberEAN / GTINR-ValueThicknessWidthLengthPieces per palletm² per pallet
691296
5056376618573
2.05 (m²K)/W
80 mm
1,000 mm
1,200 mm
30 pc/pal
36.00 m²/pal
606052
5012061995831
2.55 (m²K)/W
100 mm
1,000 mm
1,200 mm
24 pc/pal
28.80 m²/pal
686424
5056376608864
2.65 (m²K)/W
105 mm
1,000 mm
1,200 mm
24 pc/pal
28.80 m²/pal
606055
5012061995848
3.05 (m²K)/W
120 mm
1,000 mm
1,200 mm
20 pc/pal
24.00 m²/pal
606057
5012061995855
3.70 (m²K)/W
145 mm
1,000 mm
1,200 mm
16 pc/pal
19.20 m²/pal
691052
5056376618078
4.10 (m²K)/W
160 mm
1,000 mm
1,200 mm
14 pc/pal
16.80 m²/pal
606059
5012061995862
4.60 (m²K)/W
180 mm
1,000 mm
1,200 mm
14 pc/pal
16.80 m²/pal
Knauf | Rocksilk® Flat Roof Slab Rock Mineral Wool Insulation | Knauf