DIY loft top-ups
Simple coverage guidance for topping up tired insulation and reducing heat loss.
Eco loft insulation rolls for UK homes
Keep heat in with cleaner, itch-free loft insulation.
Recycled polyester insulation in 370mm and 570mm widths, made for easier handling, cleaner fitting and fewer ordering mistakes.
70% recycled material
Itch-free handling
Thermal and acoustic use
Trade and bulk jobs
Clear roll sizes, predictable quantities and fast quote prompts for larger installs.
Campervan builds
Lightweight, non-irritant insulation that is easier to handle in tight spaces.
Choose your roll
Pick the width that matches the job.
Start with joist spacing. Choose 370mm for tighter gaps and awkward runs, or 570mm when you need faster coverage across wider spaces.
Best for narrower joist gaps
370mm width loft insulation roll
A controlled fit for tighter loft spaces, smaller runs and areas where you want less cutting around joists and obstructions.
£21.99 from price
50mm / 110mm thicknesses
Best for faster open coverage
570mm width loft insulation roll
A wider roll for larger open loft runs where speed, fewer joins and simple coverage matter most.
£21.99 from price
50mm / 110mm thicknesses
Before you order
Not sure how many rolls you need?
Enter your loft size, choose 370mm or 570mm, then get a roll estimate with extra allowance for cuts, joins and awkward areas.
Calculate my roll quantity
01 Avoid under-ordering mid-job
02 Reduce wasted spend on extra rolls
03 Link straight to the recommended variant
Why Green Loft
Built for warmer homes and cleaner installs.
Practical insulation for homeowners, trades and van builds where comfort, handling and order confidence all matter.
Itch-free handling
Soft polyester fibre is easier to handle than traditional glass wool irritation.
Recycled polyester
Made with recycled material for a cleaner, more sustainable insulation choice.
Thermal and acoustic
Helps reduce heat loss while also supporting sound reduction in suitable spaces.
Easy to cut and fit
Flexible rolls are simple to position between joists and around awkward areas.
Order with confidence
Clear widths, live variant pricing and a calculator to reduce guesswork.
How it works
From loft measurements to the right rolls.
Measure your loft
Get the length and width of the area you want to insulate, allowing for awkward sections.
Choose your roll type
Pick 370mm or 570mm width, then choose the thickness that suits the job.
Calculate and order
Use the calculator to estimate roll quantity and go straight to the recommended variant.
For larger jobs
Need insulation for multiple lofts, sites or a bulk install?
Use the calculator for a first estimate, then send the quantities over for a trade quote.
Loft Insulation Rolls
Available insulation roll widths: 370mm (most popular) Lengths: 4m, 5, 8m, 10m Loft thickness: 50mm, 110mm
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