Match the space
Use the roll width that best suits your joist spacing and layout. Narrower rolls help with awkward runs; wider rolls cover open areas faster.
370mm Wide Loft Insulation Roll - 110mm Thick
370mm Wide Loft Insulation Roll - 110mm Thick
Regular price
£29.99 GBP
Regular price
Sale price
£29.99 GBP
Unit price
per
Tax included.
Fast & Free UK Delivery (1-2 Working Days)
Itch-free cleaner handlingRecycled polyester materialThermal + acoustic insulationDIY friendly cut and fit
Not sure how many rolls you need?Calculate quantity before adding to basket.
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Choose your roll width
370mm is useful for narrower joist gaps. 570mm is better for larger open areas and faster coverage with fewer joins.
Need a bespoke size or fitting advice?If our 370mm or 570mm rolls are not right for your space, send us your measurements and project details.
Request bespoke sizing help
Product buying guide
Choose the right loft insulation roll with confidence.
Quickly compare width, thickness, length and quantity before ordering. Built to make the product page clearer for DIY buyers, installers and trade customers.
Pick the depth
Choose 50mm for lighter fill or 110mm when you want a deeper layer of thermal and acoustic insulation.
Check coverage
Longer rolls cover more area per pack. Use the available length options to balance coverage, handling and budget.
Calculate first
Measure the loft, add allowance for cuts and joins, then use the calculator before adding rolls to basket.
Need a custom fit?
Working with unusual joist spacing, campervan panels, trade installs or awkward areas? Contact us with your measurements before ordering.
Before you order
Not sure how many rolls you need?
Enter your loft length and width, choose the roll type, and get a roll estimate with allowance for cuts, joins and awkward areas.
Why buyers choose Green Loft
Cleaner to handle, easier to fit, practical to order.
Itch-free handling
Made to be easier to handle than traditional glass wool irritation.
Recycled polyester
A cleaner insulation choice made with recycled polyester material.
Thermal and acoustic
Suitable for warmth, sound reduction and multi-use insulation projects.
Easy to cut and fit
Flexible rolls for loft joists, awkward corners and practical DIY installs.
Measure the space
Measure length and width in metres, then allow for any awkward sections.
Select your variant
Choose the width, length and thickness that match the job.
Order with allowance
Use the calculator estimate so you avoid under-ordering mid-install.
Which roll width should I choose?
Choose the width that best matches the space you are insulating. 370mm is better for narrower or awkward runs; 570mm is better for faster coverage across wider open areas.
How much extra should I allow?
Around 10% extra is a sensible starting point for cuts, joins and awkward loft areas. Complex spaces may need more.
Can I use this outside lofts?
Yes, it can be used for suitable walls, floors, camper vans, motorhomes and acoustic projects. Always check the requirements of your specific build.
Can you supply custom insulation sizes?
Yes. If our standard 370mm or 570mm rolls are not suitable, contact us with your measurements and project details. We can advise on bespoke sizes and fitting options.
Will the roll expand after opening?
The rolls are compressed for easier delivery and storage. After opening, allow the material time to recover towards its stated thickness before fitting.