Home > Companies > Knauf Insulation Ltd > Earthwool® OmnifFit Roll

Multi-purpose, non-combustible, glass mineral wool roll. Specifically designed for installation by friction fitting.

Features and benefits:

  • Provides high thermal and acoustic performance.
  • Odourless, rot-proof, non-hygroscopic; does not sustain vermin and resists the growth of fungi, mould and bacteria.
  • Rolls are partially perforated to allow use between joists or studs at 400 or 600 mm centres.
  • Manufactured with ECOSE® technology, an innovative, bio-based binder that helps make the product soft, and easy to handle and install. It is also 70% less energy-intensive than traditional binders.
  • Contains no dye or artificial colours.
  • 'A+' generic BRE Green Guide rating.
  • Manufactured to ISO 9001, 'Quality Management Systems' and ISO 14001, 'Environmental Management Systems'.
  • Manufactured in accordance with BS EN 13162.


Suitable for the thermal and acoustic insulation of a variety of constructions, including:

  • Pitched roof at ceiling level (loft insulation).
  • Internal partitions.
  • Internal floors.
  • Separating floors.
  • Timber floors.

Standard product features


1200 mm. Can be combi-cut to provide 2 x 600 mm or 3 x 400 mm-wide rolls – consult manufacturer for details.


  • Thermal conductivity (K-value): 0.040 W/mK.
  • Fire resistance (to BS EN 13501-1): Euroclass A1.
  • Water vapour resistivity: 5.00 MNs/g.m.
  • Density: 10.5 kg/m³ (minimum).

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-70/355 Mineral wool insulation

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Knauf Insulation Ltd


+44 (0)1744 766 666

Product reference

Earthwool® OmnifFit Roll


[100 mm]
Thermal resistance: 2.50 m²K/W. Length: 6800 mm.
[150 mm]
Thermal resistance: 3.75 m²K/W. Length: 4550 mm.
[200 mm]
Thermal resistance: 5.00 m²K/W. Length: 3400 mm.

Manufacturer details

Knauf Insulation,
Stafford Road,
St Helens,
Merseyside, WA10 3LZ
Tel +44 (0)1744 766 666
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