Order PIR insulation boards for delivery in Welwyn Garden City

Which PIR insulation boards can you order in Welwyn Garden City?

• Thermal laminate boardsPIR bonded to plasterboard.
• Foil tape and fixingsTo seal joints and fix boards.
• Flat roof boardsBoards for warm flat roof build-ups.
• Cavity wall boardsBoards sized for partial-fill cavity insulation.

Before your Welwyn Garden City delivery arrives

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

• If the site is up a shared drive or behind other houses, tell us the distance from the road.
• For a phased build we can split the order so materials arrive as each stage starts, which keeps the site clear.
• If the drop point is block paving or soft ground, say so; heavy pallets and bulk bags can mark or sink.

Choosing PIR insulation boards

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.

Fire considerations

PIR is a combustible product. Building regulations restrict combustible materials in some situations, such as external walls of taller buildings; check what applies.

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.

Working out quantities for your Welwyn Garden City job

Insulating 24 m² of rafters, floor or wall takes 9 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

Questions about PIR insulation boards delivery in Welwyn Garden City

Can you deliver PIR insulation boards to a site with restricted access in Welwyn Garden City?

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 Welwyn Garden City?

Yes. We deliver across Welwyn Garden City, including AL8, AL7, AL6. Welwyn Garden City is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.

Can PIR be used in external walls?

In some situations, but building regulations restrict combustible insulation in external walls of certain buildings. Check the rules for your building.

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.