140mm Superglass Timber & Rafter Roll 40
Product Code:
7.87 m²
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Superglass Timber & Rafter Roll 40 is a medium density, non-combustible glass mineral wool insulation roll. The flexible roll is cut at 2x570mm widths to allow easy installation between common stud spacings and minimum on-site cutting and waste..

Key points

  • Provides excellent thermal performance.
  • Euroclass A1 non-combustible.
  • Made from up to 84% recycled glass.
  • Zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP).
  • BRE Green Guide Rating of A+ and ISO 14001 accredited.
  • Simple installation process. Friction fit between timber studs at 600mm centres.
  • All Superglass products are non-hygroscopic, will not rot, degrade or sustain vermin and will not encourage the growth of mould, bacteria or fungi.


  • Thickness: 140mm
  • Width: 1200mm (2x570)
  • Length: 6.90 m
  • Pack Coverage: 6.90 m²
  • Thermal Conductivity:  0.040 W/mK
  • R-Value: 3.50 m²K/W
  • Fire Rating: A1 tested to BS EN 13501-1


  • Superglass Timber & Rafter Roll 40 is designed to provide thermal and acoustic insulation for timber frame roofs, walls and floors. The rolls are self-supporting by friction fitting between timber studs/joists.


  • ISO9001 - Quality Management Systems
  • ISO14001 - Environmental Management
  • EN 13162 - Manufactured in accordance with
  • A+ rating on BRE Green Guide

Datasheets & Documents.