Knauf - OmniFit® Slab 35 - Knauf-Insulation-OmniFit-Slab-35-Image-UK
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Knauf - OmniFit® Slab 35 - Knauf Insulation Internal Wall Timber Stud IW01-Solution-UK
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Knauf - OmniFit® Slab 35 - Knauf Insulation Internal Wall Staggered Metal Stud IW03-Solution-UK
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Knauf - OmniFit® Slab 35 - Knauf-Insulation-OmniFit-Slab-35-Image-UK
Certificates and Standards
EUCEBBBA Agrément 24/7110 UKMade in BritainIndoor Air Comfort® GoldEuroclass A1 Fire Classification UKCCPI Product - Verification Number 000600200/0228CEDeclareRed List FreeEPD

OmniFit® Slab 35

Glass Mineral Wool
Specify on NBS
  • OmniFit® Slab 35 holds an Agrèment certificate by the BBA (under reference number 24/7110) for use as insulation between rainscreen façade systems.
  • Multi-purpose product that can be used to insulate a wide range of applications, reducing the need to purchase and handle multiple products.
  • Designed to friction fit between studs, which prevents air movement and infiltration around the edges, minimising heat loss.
  • Manufactured size allows friction fitting between common stud centres without any cutting and waste on-site.
Applications
Exterior wall / FacadePitched roofInterior wallFloor

Description & Details

OmniFit® Slab 35 is a glass mineral wool slab, designed for use in multiple applications, and holds an Agrément certificate by the BBA for use in both timber and steel frame construction. It offers thermal conductivity of 0.035 W/mK, combined with acoustic performance. OmniFit® Slab 35 is non-combustible with the best possible Euroclass A1 reaction to fire classification, and is manufactured using our unique plant-based binder, ECOSE® Technology.

  • OmniFit® Slab 35 holds an Agrèment certificate by the BBA (under reference number 24/7110) for use as insulation between rainscreen façade systems.
  • Multi-purpose product that can be used to insulate a wide range of applications, reducing the need to purchase and handle multiple products.
  • Designed to friction fit between studs, which prevents air movement and infiltration around the edges, minimising heat loss.
  • Manufactured size allows friction fitting between common stud centres without any cutting and waste on-site.
  • Compression packed with more product on a pallet than alternative rock mineral wool products.
  • Manufactured from mineral wool which provides the best levels of sound absorption and reduction compared to other mainstream insulants.
  • Holds a CCPI Assessment Mark (certificate number 000600200/0228) for the entire product set.

Multi-Application

Ground floors

Internal floors

Pitched roofs at rafter level

Internal walls / partitions

Light steel frame walls

Timber frame walls

Documents

Product Data Sheet
OmniFit® Slabs Datasheet.PDF / Feb 2026 / 1.09 MB / 5 pages
Brochure
Knauf Insulation Solutions Guide UK.PDF / - / 21.46 MB / 167 pages
Acoustic Insulation - What You Need to Know.PDF / Jan 2025 / 3.47 MB / 3 pages
Safety Data Sheet
Glass Mineral Wool with ECOSE® Technology - Safety Data Sheet.PDF / Feb 2025 / 160.00 KB / 9 pages
Environmental Product Declaration
Knauf Insulation OmniFit® Slab 35 EPD - EN - UK&I.PDF / - / 750.00 KB / 17 pages
Sustainability
Glass Mineral Wool - BREEAM Helpsheet.PDF / Feb 2025 / 40.00 KB / 1 page

Declaration of Performance

  • Declaration of performance: G4207LPCPR
  • 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

OmniFit® Slab 35 - BBA Certificate - 24/7110.PDF / Apr 2024 / 2.20 MB / 1 page
CCPI Assessed Products Certificate - OmniFit®.PDF / Feb 2026 / 110.00 KB / 1 page

Technical Data

DescriptionValueUnitNorm
Thermal conductivity declared
0.035
W/(mK)
Reaction to fire
A1
EN 13501-1

Product Variants & Packaging

OmniFit® Slab 35

Material numberEAN / GTINR-ValueThicknessWidthLengthPieces per packm2 per packm² per palletPacks per pallet
474314
5012061913156
2.85 (m²K)/W
100 mm
400 mm
1,200 mm
6 pc/pac
2.88 m²/pac
120.96 m²/pal
42 pac/pal
474340
5012061913286
2.85 (m²K)/W
100 mm
600 mm
1,200 mm
6 pc/pac
4.32 m²/pac
138.24 m²/pal
32 pac/pal
474318
5012061913170
4.00 (m²K)/W
140 mm
400 mm
1,200 mm
4 pc/pac
1.92 m²/pac
92.16 m²/pal
48 pac/pal
474342
5012061913309
4.00 (m²K)/W
140 mm
600 mm
1,200 mm
4 pc/pac
2.88 m²/pac
103.68 m²/pal
36 pac/pal
587280
5012061979503
4.25 (m²K)/W
150 mm
600 mm
1,200 mm
4 pc/pac
2.88 m²/pac
92.16 m²/pal
32 pac/pal
474293
5012061913118
1.40 (m²K)/W
50 mm
400 mm
1,200 mm
12 pc/pac
5.76 m²/pac
207.36 m²/pal
36 pac/pal
474329
5012061913200
1.40 (m²K)/W
50 mm
600 mm
1,200 mm
12 pc/pac
8.64 m²/pac
207.36 m²/pal
24 pac/pal
474334
5012061913248
2.00 (m²K)/W
70 mm
600 mm
1,200 mm
8 pc/pac
5.76 m²/pac
184.32 m²/pal
32 pac/pal
587268
5012061979442
2.10 (m²K)/W
75 mm
600 mm
1,200 mm
8 pc/pac
5.76 m²/pac
184.32 m²/pal
32 pac/pal
474337
5012061913262
2.55 (m²K)/W
90 mm
600 mm
1,200 mm
6 pc/pac
4.32 m²/pac
155.52 m²/pal
36 pac/pal
Knauf | OmniFit® Slab 35 Glass Mineral Wool Insulation | Knauf