Best Loft & Wall Insulation — Insulation Spacer + Budget (2026)
1 loft & wall insulation matching material “Insulation Spacer” + price tier “Budget”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Loft & Wall Insulation UK (2026) guide.
#1 Pick
Loft Leg XL Flooring LoftLegs 300mm Insulation Spacer - 12 PackRated 4.5 out of 5 stars (28)
- Insulation Spacer
- 300mm, 12 Pack
£23.99
Pros
- Raises loft boarding clear of insulation so it stays uncompressed for full thermal value
- Screws straight into joists with no cutting or extra fixings needed
- 300mm height suits a deep top-up layer without squashing it flat
Cons
- Needs the loft boards bought separately to complete the raised floor