Celotex Cavity Batts 75mm (1200×450) 4.32m2 CW4075

Celotex Cavity Batts 75mm (1200×450) 4.32m2 CW4075

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

Upgrade your cavity wall insulation with the Celotex Cavity Batts 75mm, supplied in board dimensions of 1200 mm (length) × 450 mm (width) and covering approximately 4.32 m² per pack (8 boards). This high-performance product is engineered for partial-fill masonry cavity wall applications , where superior thermal performance is required without excessive board thickness.

The boards feature a rigid polyisocyanurate (PIR) foam core with low-emissivity foil facing on both sides—enhancing thermal efficiency within the cavity air space. With a thermal conductivity of approximately 0.022 W/m·K, it offers excellent insulation performance and helps to meet current regulatory U-value targets.

Each board is pre-sized to standard wall-tie spacing (1200 × 450mm), meaning less cutting, fewer waste off-cuts and quicker installation on site. The 75 mm thickness is especially useful when you have a narrower cavity width or need to maintain a residual cavity for drainage or ventilation, yet still deliver strong insulation performance.

Durability and long term performance are built in: the rigid core maintains dimensional stability, the foil facings resist moisture and air infiltration, and the board is BBA-certified for the specified use as partial-fill cavity wall insulation.

Key Features

Board size: 1200 mm × 450 mm (coverage ~0.54 m² per board)

Thickness: 75 mm , suitable for partial-fill cavity wall applications

Material: Rigid PIR foam core with low-emissivity foil facings on both sides

Thermal conductivity: ~0.022 W/m·K (λ-value)

Pack coverage: ~4.32 m² per pack (8 boards)

Certification: BBA approved, BRE Green Guide Rating ‘A’ for many thicknesses in this range

Benefits

High thermal performance in limited space : The 75 mm board offers strong insulation for cavities where deeper insulation isn’t practical.

Fast installation : Pre-sized boards matched to wall-tie spacing reduce cutting and labour time.

Energy efficiency : The low-emissivity foil facing plus high-performance core help achieve lower U-values and reduce heating demand.

Durability : Rigid PIR foam stays dimensionally stable over time; foil facings protect against moisture and air movement.

Regulation friendly : Meets recognised standards for cavity wall insulation, giving confidence in specification and compliance.

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.