Recticel Eurowall PIR Cavity Board 450 x 1200 x 50mm

Recticel Eurowall PIR Cavity Board 450 x 1200 x 50mm is a specialist partial-fill cavity wall insulation board engineered for high thermal performance in masonry construction. Supplied by Minster (STARK Building Materials UK Limited), it is the go-to choice for builders, contractors, and self-builders seeking a BBA-certified PIR board that meets current Building Regulations. With a best-in-class thermal conductivity of 0.022 W/mK, it delivers outstanding energy efficiency in a slim, easy-to-handle profile.

Key Features and Specifications

• Material: Polyisocyanurate (PIR) rigid foam core with gas-diffusion-tight, multi-layered metal foil facings on both sides
• Dimensions: 1200 mm (L) × 450 mm (W) × 50 mm (T) — coverage 0.54 m² per board
• Thermal Conductivity (λ): 0.022 W/mK
• Thermal Resistance (R-value): 2.25 m²K/W at 50 mm
• Edge Profile: Precision-cut straight edges to minimise gaps and reduce thermal bridging
• Low-emissivity facing: Improves thermal resistance within the clear cavity
• Moisture resistance: Does not degrade or deteriorate due to moisture — maintains long-term thermal performance
• Fire Rating: Class 1 — BS 476 (Part 7); Euroclass F
• Certification: BBA certified; CCPI verified
• Suitable for: Partial-fill masonry cavity walls up to 25 m in height
• Colour: Cream/Silver foil facing

Applications

• Partial-fill masonry cavity wall insulation in new-build residential and commercial properties
• House extensions and refurbishment projects requiring cavity wall upgrades
• Fitted between outer and inner leaf during construction, secured between wall ties
• Suitable for walls where a residual clear cavity must be maintained
• Compatible with standard brick-bond staggered-joint installation to prevent thermal bridging

Why Choose This Product

The Recticel Eurowall PIR Cavity Board 450 x 1200 x 50mm combines one of the lowest thermal conductivity values available in cavity board insulation (0.022 W/mK) with BBA certification and CCPI verification — giving specifiers and building control confidence in compliance. Its precision straight edges ensure tight board-to-board contact, minimising air gaps and heat loss. Lightweight and easy to cut with a fine-toothed saw or sharp knife, it speeds up installation on site. Unlike mineral wool alternatives, it will not absorb moisture or lose performance over the building’s lifetime.

Delivery in and Around London

Minster (STARK Building Materials UK Limited) offers reliable delivery of the Recticel Eurowall PIR Cavity Board across London boroughs including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas such as Enfield, Bexley, Redbridge, and Barnet. We also supply to surrounding counties including Kent, Essex, Surrey, and Hertfordshire. Trade quantities and full-pallet orders are welcome — contact our team for volume pricing and scheduled site deliveries.