Fixing and buying guide
EARTHWOOL LOFT ROLL 44 - 150mm (9.177m2) Combi Cut Glass Mineral Wool
What this product is and who it is for
Earthwool Loft Roll 44 is a glass mineral wool insulation roll suitable for cold loft spaces where you have adequate depth to install 150mm of insulation without restriction. It is ideal for both new loft insulation installations and upgrading existing lofts. The combi-cut format makes it particularly suitable for installers who want pre-cut widths that align with standard timber joist centres, reducing on-site cutting and waste.
- 150mm thickness for effective thermal performance in unrestricted loft spaces
- Combi-cut format arrives pre-cut to standard joist widths
- Covers 9.177 square metres per roll
- Suitable for trade and serious DIY installers
Compatibility and preparation
Before installing Earthwool Loft Roll 44, check that your loft has adequate depth to accommodate 150mm of insulation without compressing it. Ensure joists are sound and free from rot or damage. The combi-cut format is designed to fit between standard joist spacings, so measure your joist centres to confirm compatibility. Verify that your loft has adequate ventilation to prevent moisture issues, particularly in the eaves area. If your loft already has insulation, you may need to remove it or install this roll perpendicular to existing material.
- Confirm loft depth allows 150mm thickness without compression
- Check joist centres match combi-cut widths
- Ensure joists are structurally sound
- Verify adequate loft ventilation is in place
Pack contents and coverage
Each roll of Earthwool Loft Roll 44 contains 150mm thick glass mineral wool in combi-cut format. The roll covers 9.177 square metres, so calculate your total loft area and order the number of rolls required. The combi-cut format means the roll arrives pre-cut to fit standard joist spacings, minimising waste and installation time on site.
- Single roll covers 9.177 square metres
- Pre-cut to standard joist widths in combi-cut format
- 150mm thickness throughout
Installation and safety
Earthwool Loft Roll 44 is a glass mineral wool product and requires standard safety precautions during handling and installation. Wear appropriate personal protective equipment including gloves, long sleeves, and a dust mask when handling and cutting the material. Unroll the insulation between joists, ensuring it sits evenly without compression or gaps. The combi-cut format should align with your joist centres; if adjustment is needed, use a sharp utility knife. Ensure the material does not block eaves ventilation. The product holds CCPI Verification, confirming its performance and safety standards.
- Wear gloves, long sleeves, and dust mask during installation
- Lay between joists without compression
- Maintain eaves ventilation clearance
- CCPI Verified product (certificate 000600173/0627)