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Isover Spacesaver Loft Roll Insulation Glass Wool 150mm - 9.33m2 Roll

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£30.90 Incl. VAT
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Isover Spacesaver Roll is a high quality glass mineral wool insulation, it comes in roll form for thermal application in cold roof and loft floors. Rolls are pre-perforated at 3 x 386mm and 2 x 580mm to allow easy installation between joist centres of 400mm or 600mm.

Isover Spacesaver provides thermal insulation for cold roof constructions in both new-build and renovation projects. Rolls are installed in two layers, the first layer between the joists and the second layer cross laid over the joists.


Isover Spacesaver is manufactured from high quality glass mineral wool which makes it lightweight and easy to handle, cut and install.

Water resistant

Resilient to moisture damage in storage, during transportation and on site during installation.


All Isover products are manufactured under Quality Management Standard - ISO 9001:2008. Isover Spacesaver is manufactured under BS EN13162:2012 and BS EN13172:2012 (Thermal insulation products for buildings - Factory made mineral wool (MW) products).

Recylced content

Isover glass mineral wool insulation is manufactured from up to 86% recycled glass that would otherwise go to landfill. This makes Isover one of the most environmentally sustainable insulation products on the market today.


All Isover products are manufactured under Environmental Management System - ISO 14001:2004. Zero ODP (Ozone Depletion Potential), GWP < 5 (Global Warming Potential). The manufacturing process does not use or contain CFCs, HCFCs or other damaging gases.


Thickness: 150mm.
Length:1160mm X 8050mm
Coverage: 9.33m2.
Thermal resistance: 3.45 m²K/W.
Thermal conductivity: 0.044 W/mK.
Fire rating: Euroclass A1 to BS EN13501-1.
Class 'O' compliance.


Length 8050mm Thickness 150mm Width 1160mm


Thermal Conductivity 0.044 W/mK Application Stud Walls Material Glass Fibre

Questions & Answers


How wide is the roll?


Width: 1160mm, pre-perforated at 3 x 386mm and 2 x 580mm

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4 / 5 4 reviews
19th May
Great product
4th February
To soon to assess!
Richard Reed
30th October 2021
Good quality product. Relatively easy to install. Perforations make it much easier to size up and minimises cutting.
David Hughes
2nd July 2021
Very happy. Cut roll in half and left it in the packaging to transport to the loft where I released the packaging. Easy to use.
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Isover Spacesaver Loft Roll Insulation Glass Wool 150mm - 9.33m2 Roll

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