Multifoil: thin insulation for rooms in the roof
If the roof space is a room, insulation has to follow the roof. Multifoil is thin enough to do that without stealing headroom.
Illustration: multifoil fixed across the rafters in a room in the roof
| Comes as | Layers of foil and wadding |
|---|---|
| Laid | Fixed across the rafters with air gaps |
| Best for | Rooms in the roof, tight spaces |
| Worth knowing | Needs proper air gaps and taped joints |
| Elsewhere | Loft floors get rolls instead |
The one exception
Everywhere else, insulation goes on the loft floor. Multifoil is the only material we fix to the rafters, and only where a room in the roof needs it.
Fitting
Battens keep the air gaps, joints are overlapped and taped, edges sealed.
Common questions
Can you measure my loft and quote?
Yes. The quote is free and in writing, with every part priced.
Why not wool between the rafters?
It blocks the airflow under the roof and invites condensation.
Full depth below. Room to store above. Get a price.
Tell us about your loft and we’ll quote the insulation, boarding and ladder in writing. Free, no obligation.