Recticel Eurowall + T&G Insulation 460 x 1200 x 115mm

Recticel Eurowall + T&G Insulation 460 x 1200 x 115mm is a premium, high-performance PIR (polyisocyanurate) full-fill cavity wall insulation board, supplied by Minster (STARK Building Materials UK Limited). Engineered for 125mm masonry cavity walls in both new-build and renovation projects, it delivers a thermal resistance of 5.20 m²K/W from a PIR core with a thermal conductivity of just 0.022 W/mK — making it one of the most thermally efficient full-fill boards available to UK trade and self-build customers.

Key Features and Specifications

• Material: Polyisocyanurate (PIR) rigid foam core
• Facing: Gas-diffusion-tight multilayer foil — reflective grid-pattern face to cavity side; alkali-resistant mat-grey face to inner leaf
• Dimensions: 1200 mm × 460 mm × 115 mm (max, including T&G); installed size 1190 mm × 450 mm × 115 mm
• Thermal conductivity (λ): 0.022 W/mK
• Thermal resistance (RD): 5.20 m²K/W
• Pack contents: 8 boards per pack; 4.32 m² coverage per pack
• Edge profile: Precision-cut tongue & groove on all four sides
• Residual cavity: 10 mm — compatible with conventional bricklaying techniques
• Fire classification: Euroclass F
• Certifications: BBA Agrément Certificate 23/7035; NHBC approved; LABC Registered Detail EWW620; CCPI verified
• U-value potential: 115 mm within a 125 mm cavity can help achieve 0.18 W/m²K (Part L1A England & Wales)
• Blowing agent: Zero Ozone Depletion Potential (ODP); low Global Warming Potential (GWP)

Applications

• Full-fill masonry cavity wall insulation — the primary application for residential and commercial new builds
• 125 mm cavity walls in housing extensions and refurbishments where thinner boards cannot meet the required U-value target
• Timber-frame and steel-frame infill where a rigid, dimensionally stable PIR board is specified
• Self-build and developer projects requiring BBA-certified, NHBC-approved insulation to satisfy Building Regulations Part L

Why Choose This Product

The four-sided tongue & groove joint locks boards tightly together, minimising thermal bridging at every joint and providing enhanced protection against wind-driven rain and air infiltration. The dual-faced foil construction — low-emissivity to the cavity side, alkali-resistant to the inner leaf — maximises thermal performance within the wall build-up without increasing the overall cavity width. BBA certification, NHBC approval, and CCPI verification give specifiers, warranty providers, and building control officers the confidence they need. Lightweight and easy to handle, these boards suit both experienced bricklayers and competent self-builders alike.

Delivery in and Around London

Minster (STARK Building Materials UK Limited) offers delivery of the Recticel Eurowall + T&G Insulation 460 x 1200 x 115mm across London and the surrounding region. Inner London boroughs served include Croydon, Lewisham, Southwark, Camden, and Hackney, with Greater London coverage extending to Enfield, Bexley, Redbridge, and Barnet. Deliveries also reach the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities and full-pallet orders are welcome — contact your local Minster branch for volume pricing and lead times.