Order PIR insulation boards for delivery in Llantwit Major

Choosing from our PIR insulation boards range

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

Things to check before you order

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.

Wales has its own Approved Documents, including its own Part L for energy efficiency, and building control is handled by the local authority or a registered approver.

A quick quantity check

Insulating 12 m² of rafters, floor or wall takes 5 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

Planning the drop in Llantwit Major

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

• Deliveries are to the kerb, drive or within crane reach; ask if materials need to go further.
• Tell us the best drop point, such as a driveway, front garden or the kerb, and whether a lorry can park close to it.
• Mention any overhead cables, low branches or narrow gateways, because they decide whether a crane offload is possible.

PIR Insulation Boards in Llantwit Major: questions

What is the foil for?

The foil facing reflects heat, protects the foam and, when joints are taped, can act as a vapour control layer.

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.

Do you deliver PIR insulation boards to trades and homeowners in Llantwit Major?

Both. Trades can apply for a trade account; homeowners and self-builders can order on a delivered quote.

Is there a minimum order for delivery to Llantwit Major?

There is no fixed minimum. For very small orders we will tell you honestly if the delivery cost outweighs the materials, so you can decide.