Best Loft & Wall Insulation UK (2026) — Page 4
Insulation rolls, slabs and boards for lofts and walls.
Read our full Best Loft & Wall Insulation UK (2026) guide.
#19 Pick
25mm Multi-Purpose Jabite Insulation Boards – Pack of 9 | Thermal Foam Panels for Floor, Wall, Roof & Underfloor Heating | Lightweight, Moisture Resistant, Easy to Cut & InstallRated 4.3 out of 5 stars (325)
- Foam Insulation Board
- 25mm
£28.99
Pros
- Lightweight rigid foam panels are easy to cut and handle without mineral wool itch
- Pack of 9 boards suits floor, wall, roof or underfloor heating insulation jobs
- Moisture-resistant foam holds up better than fibre insulation in damp areas
Cons
- Foam boards offer less sound deadening than mineral wool alternatives
#20 Pick
ProWarm 6mm Insulation Boards - ProFoam 14 Pack (10m2)Rated 4.5 out of 5 stars (20)
- Foam Insulation Board
- 6mm
£24.95
Pros
- Slim 6mm foam boards raise floor height minimally, useful under underfloor heating systems
- 14-pack covers 10m2, enough for an average room
- Rigid closed-cell foam resists moisture and is simple to cut to size
Cons
- Thin profile gives a lower thermal resistance than thicker PIR or mineral wool boards