Celotex Insulation PIR 40mm 8×4 (2400×1200)

Celotex Insulation PIR 40mm 8×4 (2400×1200)

Please note that there is currently a nationwide shortage of PIR insulation due to ongoing conflict in the Middle East. We may contact you should any issues arise with your order.

Celotex Insulation / Xtratherm / Recticel / Kingspan / Unilin / Ecotherm

The 40mm Celotex PIR Insulation Board is a high-performance thermal insulation sheet designed for use in floors, walls, and roofs. Manufactured by Celotex , one of the UK’s leading insulation brands, it delivers exceptional energy efficiency while keeping installation fast and hassle-free.

Each board features low-emissivity foil facings on both sides, improving thermal performance and helping meet Part L building regulations. Lightweight yet rigid, Celotex PIR boards are easy to cut and handle on site — ideal for both new builds and refurb projects.

Key Features

Thickness: 40 mm

Board size: 2400 mm × 1200 mm

Thermal conductivity: 0.022 W/mK

Foil-faced on both sides for enhanced insulation performance

Lightweight and easy to cut , shape, and install

Suitable for floors, walls, roofs, and ceilings

BBA certified and compliant with current building regulations

Applications

Ground floors (solid or suspended)

Internal and external walls

Pitched and flat roofs

Loft conversions and dormer cheeks

Garage ceilings and extensions

Why Choose Celotex?

Celotex is trusted across the trade for reliable thermal performance and consistent board quality. The 40 mm board is perfect for reducing heat loss in tight spaces where thicker insulation won’t fit — giving you a simple way to improve energy efficiency without compromising space.

For bulk orders or trade pricing, contact us for a competitive quote. If you have any questions regarding this product call 0113 204 7303 or contact us here.