150mm Isover Loft Roll Insulation Spacesaver 1.16x8.05m / 9.34sqm
The 150mm Isover Loft Roll Insulation Spacesaver (1.16 x 8.05m / 9.34sqm) is a high-performance, lightweight glass mineral wool quilt engineered for the thermal and acoustic insulation of pitched roof spaces at ceiling level. Supplied in a convenient roll covering 9.34 square meters, the blanket measures 1.16 meters in width by 8.05 meters in length with a substantial 150mm thickness, and is pre-scored to allow easy splitting to fit standard ceiling joist spacings.
Manufactured from resilient glass mineral wool, this insulation roll is designed to be laid over and between timber ceiling joists in cold loft spaces to significantly reduce heat loss from the rooms below, helping properties easily meet or exceed modern building regulations for thermal performance. The flexible matrix springs back to fill gaps tightly, eliminating thermal bridging while remaining lightweight enough for easy transport and handling through standard loft hatches.
The material achieves a Euroclass A1 non-combustible fire classification—the highest safety rating available—providing reliable fire resistance. Additionally, it offers excellent acoustic sound absorption to help dampen external noise entering through the roof. Whether you are upgrading your loft insulation to improve energy efficiency or working on a new construction project, this trade-quality Spacesaver roll delivers dependable, long-lasting thermal and acoustic performance.
- 9.34sqm coverage.
- 150mm x 1160mm x 8050mm.
- 0.044W/mK thermal conductivity.
- Manufactured from 80 per cent recycled glass.
- A1 Euroclass Reaction to Fire rating when classified to BS EN 13501-1 Class O compliance.
- Helps to meet the requirements of UK thermal building regulations.
Available in: 100mm, 150mm & 200mm thicknesses. Others available on request.














