New Isover Spacesaver 150mm

£57.47 inc. VAT

These energy saving 150mm thick insulation rolls from Isover’s market-leading Spacesaver range are manufactured from up to 86% recycled glass mineral wool. Highly sustainable and environmentally friendly, they provide exceptional thermal insulation of roofs, loft floors and stud walls. Lightweight and compact, they’re quick and easy to install.

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SKU: ILG3150N Category:

Isover Spacesaver is a glass mineral wool roll for building insulation. Pre-perforated to fit between common joist spacing at ceiling level for easy application. It is supplied in longer-length rolls to help increase the speed of installation and ensure more efficient delivery and storage. It also maximises on-site efficiency as it is easy to handle and use. Spacesaver can also be  used between the joists in suspended timber ground floors and flat roofs.


With a thermal conductivity of 0.044 W/m.K heat loss is greatly reduced within the building envelope. This means a decrease energy costs as your home stays warmer for longer.  The rolls are pre-perforated (3 x 386 and 2 x 580mm widths) to fit common joist spacing, or can be used full width for quick coverage. Manufactured from up to 86% recycled glass on a plant that uses 100% renewable electricity.



  • Coverage:                               9.33m2
  • Thermal resistance:             3.45m²K/W
  • Thermal conductivity:        0.044 W/mK
  • Fire rating:                             Euroclass A1 to BS EN13501-1
  • Class:                                       ‘O’ compliance
  • Recycled Content:                Manufactured from up to 75% recycled glass
  • Certification:                          CE marked to EN 13162
  • Designation code:                 MW-EN 13162-T1
  • BRE Green Guide Rating:     A
  • Eurofins Gold Product Status


Information regarding storage, installation and handling of ISOVER products can be found at


When using ISOVER Spacesaver, ensure the product meets all relevant national Building Regulations and guidance. Check local, national and other applicable standards relevant for your construction.


150 x 1160 X 8050mm

Weight 12 kg
Dimensions 45 × 45 × 123 cm