Order PIR insulation boards for delivery in Chalfont St Peter

Choosing from our PIR insulation boards range

• Cavity wall boardsBoards sized for partial-fill cavity insulation.
• Flat roof boardsBoards for warm flat roof build-ups.
• Thermal laminate boardsPIR bonded to plasterboard.
• General-purpose PIR boards2400 × 1200 mm foil-faced boards for floors, walls and roofs.
• Foil tape and fixingsTo seal joints and fix boards.

Picking the right product

Sealing joints

Tape the joints with foil tape so the foil layer works as a continuous vapour control layer where the design relies on it.

Thickness for the U-value

The thickness you need depends on the U-value the building regulations require and the rest of the build-up. Manufacturers publish U-value tables; your designer or building control will confirm.

In England, building work is checked against the Approved Documents, for example Part A for structure and Part L for energy efficiency, through your council's building control team or a registered building control approver.

Delivery to Chalfont St Peter: what helps

Boards are light but bulky; they travel in wrapped packs and should be stored flat and dry. Chalfont St Peter is inside our standard mainland delivery area.

• On busy streets in Chalfont St Peter, a parking suspension or a quiet time slot can make offloading safer, so tell us about local restrictions you know of.
• Clear a level area for pallets, ideally on boards, so materials stay out of standing water.
• If neighbours share the access, it helps to let them know a lorry is coming.

Estimating your PIR insulation boards

Insulating 16 m² of rafters, floor or wall takes 6 boards of 2400 × 1200 mm including offcuts. The thickness depends on the U-value you need, so check it before you order. Try the insulation calculator

PIR Insulation Boards in Chalfont St Peter: questions

How thick should PIR insulation be?

It depends on where it goes and the U-value required. Pitched roofs often need 100 mm or more between and under rafters; floors and walls vary. Use the maker's U-value tables or ask your designer.

Is PIR better than mineral wool?

PIR insulates more per millimetre, so it suits tight spaces. Mineral wool is non-combustible, cheaper per square metre and better for sound.

Can you deliver PIR insulation boards to a site with restricted access in Chalfont St Peter?

Usually, yes. Tell us about the access when you ask for a price and we will plan the vehicle and offload, or say if a smaller vehicle is needed.

Do you deliver PIR insulation boards to Chalfont St Peter?

Yes. We deliver across Chalfont St Peter, including SL9, HP9, HP8. Chalfont St Peter is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.