PIR boards: more insulation in less depth
PIR boards insulate well for their thickness, so they suit lofts where you can’t add much depth, like under a floor you want to keep low.
Illustration: rigid boards fitted between the joists
| Comes as | Rigid foil-faced boards |
|---|---|
| Laid | Cut tight between the joists |
| Best for | Shallow joists, low storage floors |
| Worth knowing | Costs more than rolls; must be cut tight |
| With storage | Boards can go straight over the joists above |
Where they help
If raising a floor isn’t possible, boards between the joists give more insulation per centimetre than wool.
Fitting
Each board is cut to fit tightly, with the edges sealed so warm air can’t slip past.
On the floor
We fit them between the joists on the loft floor, not on the rafters.
Common questions
Can you measure my loft and quote?
Yes. The quote is free and in writing, with every part priced.
Better than rolls?
Thinner for the same effect, but dearer. Rolls suit most lofts.
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.