Isover Spacesaver loft insulation helps improve energy efficiency and reduces heating costs. Now supplied in longer length rolls they are ideal for new build and renovation projects.

Isover Spacesaver is a glass mineral wool which provides thermal insulation at joist level for cold roof applications. These strong, resilient and flexible rolls are now supplied in longer length rolls to help increase speed of installation and ensure more efficient deliveries and storage.

The rolls are manufactured in 100-200mm thicknesses, pre-perforated to 3x386mm and 2x580mm widths to fit between common joist spacing. They are installed in at least two layers, the first layer between the joists and the subsequent layer(s) cross laid over joists. 


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Product - Spacesaver
Product - Spacesaver
Product - SpacesaverProduct - Spacesaver

Key Benefits

  • Thermal performance - Thermal conductivity of 0.044 W/mK. Helps to reduce heat loss within the building envelope and decrease energy costs.
  • Rolls are now supplied 33% longer for speed of installation and more efficient deliveries and storage1.
  • Non-combustible - Isover glass mineral wool insulation has an A1 Euroclass fire rating – the best attainable.
  • Recycled content - Manufactured from up to 80% recycled glass.

1 Range average - specific rolls will vary according to the new roll length stated.

Variants Details

Product details

Order Code Thickness Width (mm) Length Pack area (m2) Pallet area (m2) Product Name Units per pallet
5200854520 100 1160 12180 14.13 339.12 Spacesaver - 100mm 24
5200854529 150 1160 8050 9.34 224.16 Spacesaver - 150mm 24
5200854549 170 1160 7030 8.15 195.60 Spacesaver - 170mm 24
5200840154 200 1160 5200 6.03 144.72 Spacesaver - 200mm 24