Which loft insulation is right for your home?
Most homes are best with mineral wool. Natural options are there if you’d like them, and a few materials solve particular problems.
Illustration: loft insulation materials side by side
| Material | Good for | Worth knowing |
|---|---|---|
| Mineral wool | Almost every home | Can itch while handled; settles once laid |
| Sheep’s wool | Older homes and natural-material fans | Costs more than mineral wool |
| Recycled polyester | Lofts you visit often | Costs more than mineral wool |
| Rigid boards | Shallow joists or under a floor | Needs a careful, tight fit |
| Blown insulation | Low or awkward lofts | Not for lofts you walk in or store over |
| Multifoil | Rooms in the roof | Everywhere else, insulation stays on the floor |
Every material here goes on the loft floor except multifoil, which is only fixed to the rafters in rooms in the roof. We suggest one in your quote.
- Mineral wool
- Mineral wool is what most homes have in the loft: good value, effective and laid between and over the joists.
- Sheep’s wool
- Sheep’s wool insulation: natural, pleasant to handle and good with moisture. Laid like any roll, and dearer than mineral wool.
- Recycled polyester
- Loft insulation made from recycled bottles: soft, clean and itch-free. Laid like mineral wool.
- Rigid boards
- Slim foil-faced boards between the joists where there’s little depth, such as under an existing floor.
- Blown insulation
- Loose insulation blown across the loft floor where it’s too low or awkward for rolls.
- Multifoil
- Thin multifoil fixed to the rafters where a room in the roof needs insulating. The only insulation we fit to rafters.
Make your home warmer from the top down
Tell us what kind of home you have and we’ll send a free, written quote for your loft. No obligation.