140mm Soprema Thermaclass Cavity Wall PIR Board

The 140mm Soprema Thermaclass Cavity Wall 21 is a high-performance polyisocyanurate (PIR) insulation board engineered for full-fill and partial-fill cavity wall applications. With a thermal conductivity of 0.021 W/m.K, this rigid PIR board delivers outstanding thermal efficiency whilst featuring a low emissivity foil facing for enhanced performance in sealed cavity spaces.

Product specification

• Model: 140mm Soprema Thermaclass Cavity Wall 21
• Thickness: 140mm
• Width: 450mm
• Length: 1190mm
• Pack Quantity: 4
• Board Coverage: 0.54m2
• Pack Coverage: 2.16 m2
• Weight/m2: 4.30kg
• Weight: 9.29kg
• Thermal Conductivity: 0.021W/mK
• R-Value: 6.65m2K/W
• Fire Rating (Reaction to Fire): E
• Applications: Walls - External Wall Insulation - Full Fill Masonry Cavity Walls

Product Features

• Lightweight 1190 x 450mm boards (installed dimensions)
• Tongue and groove edge profile
• Low emissivity foil facing
• BBA approved – certificate 16/5343 (Full Fill Cavity Walls)

Product Benefits

• Superior Thermal Performance: Achieves exceptional thermal efficiency with a conductivity rating of 0.021 W/m.K, reducing the thickness required to meet your target U-values.
• Advanced Foil Facing: 140mm Thermaclass Full Fill insulation Board incorporates a low emissivity foil layer that boosts thermal performance within sealed cavities, optimising the U-value when a 10mm residual cavity is maintained.
• Simple Installation: Engineered to align with standard cavity wall tie spacing, these lightweight and rigid boards are straightforward to transport, position, and secure in place.
• BBA Certified: This 140mm full-fill Thermaclass Cavity Wall 21 board holds BBA certification, verifying its performance for full-fill cavity wall installations when fitted, used, and maintained per the certificate requirements. Consult the BBA certification documentation for full details and any limitations.

Key Considerations

When installing Soprema 140mm Thermaclass 21 Cavity Wall insulation, verify compliance with all relevant Building Regulations and guidance, including local, national, and applicable standards for your build. This encompasses fire safety compliance and any applicable height restrictions for your application.

External Wall Insulation - Full Fill Masonry Cavity Walls

140mm Full fill masonry cavity PIR insulation systems work by placing insulation within the cavity between two masonry leaves, creating a continuous thermal barrier. This approach significantly boosts energy efficiency, cuts heat loss, and enhances building comfort levels. Selecting premium insulation materials, including 140mm polyisocyanurate PIR boards with low emissivity facings, guarantees outstanding thermal performance. 140mm Soprema full-fill options streamline the installation process and optimise insulation effectiveness, delivering a more efficient and economical building envelope.

Explore our complete Soprema Insulation range and refine by thickness or coverage using the filters on the left. For advice on product suitability for your specific project or to request a bulk discount quote, contact us on +4402038839057, email sales@insulationbee, or use our Live Chat service – your source for competitive UK Soprema insulation pricing.