Loft Insulation

Glass mineral wool loft roll for insulating between and over ceiling joists. Current Building Regulations guidance for lofts is around 270mm in total, usually laid as two layers. Prices are ex VAT, with a £400 ex VAT minimum. Delivery is free in England, and £40 + VAT to mainland Wales and mainland Scotland.

100mm loft insulation usually goes between the joists, with a 150mm or 200mm layer laid across them to reach around 270mm in total. Order enough rolls for both layers: each product page shows the m² per roll.

Shop loft insulation by thickness: 100mm loft insulation, 150mm loft insulation, 170mm loft insulation and 200mm loft insulation. Work out how many rolls you need with the loft roll calculator.

Not sure what goes where? See our where to insulate guide for lofts, roofs, walls, floors, partitions and ceilings.

Calculate how much insulation you need

Delivery: prices are ex VAT, with a £400 ex VAT minimum. Delivery is free in England, and £40 + VAT to mainland Wales and mainland Scotland. Questions? Call 03330 908479.

Related guides

• A Comprehensive Guide to Installing Loft Insulation
• Knauf Insulation Loft Roll 44: Cost-Effective Energy Efficiency
• How Many Loft Insulation Rolls Do I Need? Plus Loft Roll vs PIR
• What Thickness of Loft Insulation Do I Need? The 270mm Rule