Isover Timber Frame Roll 40

Timber Frame Roll 40 is a glass mineral wool roll providing thermal performance and acoustic benefits in timber frame walls. The resilient and flexible rolls can be friction fitted between standard timber studs, ensuring straightforward installation and helping to minimise gaps and maximise thermal performance.

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Product Features

  • 2 x 0.57m wide ready cut glass mineral wool rolls
  • Manufactured from up to 82% recycled content
  • Achieves Eurofins Gold certification, the highest accreditation for indoor air quality

Fire Classification

Euroclass A1 Reaction to Fire classification according to EN 13501-1.

Product Specification

Thickness (mm) Length (m) Width (m) λD Declared thermal conductivity (W/m.K) RD Declared thermal resistance (m².K/W)
90 10.13 2 x 0.57 0.040 2.25
140 6.50 2 x 0.57 0.040 3.50

Product Benefits

  • Thermal Performance - Thermal conductivity of 0.040 W/m.K. Helps to reduce heat loss within the building envelope and decrease energy costs.
  • Fire Classification - Achieves a Euroclass A1 Reaction to Fire classification, according to EN 13501-1.
  • Acoustic Benefits - The fibre structure of the glass mineral wool traps sound energy and dissipates it within its thickness, helping to improve the acoustic comfort of those living or working within the building.
  • Easy to Install - Straightforward to handle, cut and install with minimal waste (off-cuts can be reused). Friction fits between timber stud centres with no need for additional fixings.
  • Sustainability - Manufactured from up to 82% recycled glass on a plant that uses 100% renewable electricity. For further details visit

Key Considerations

When using Isover Timber Frame Roll 40, you need to satisfy yourself that use of the product meets all relevant national Building Regulations and guidance as well as local, national and other applicable standards relevant for your construction or application, including requirements in relation to fire and applicable height restrictions.

Please refer to the following product documents: