140mm Soprema THERMACLASS Cavity Wall 21

The 140mm Soprema THERMACLASS Cavity Wall 21 21 - Rigid PIR is a polyisocyanurate (PIR) insulation board (previously Celotex) designed for full-fill cavity wall applications, offering excellent thermal performance with a conductivity of 0.021 W/m.K. It features a low emissivity foil facing and can be installed with up to a 10mm residual cavity for easier installation and to accommodate mortar squeeze, or as a 140mm full-fill solution with no residual cavity.

Product specification

• Model: 140mm Soprema Thermaclass Cavity Wall 21
• Model: 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

• Thermal Performance: Delivers exceptional thermal efficiency with a thermal conductivity of 0.021 W/m.K, minimizing the insulation thickness needed to achieve the desired U-value.
• High Performance Facer: 140mm Thermaclass Full Fill insulation Board is equipped with a low emissivity foil facing that enhances thermal performance in sealed cavity air spaces, improving the U-value with a 10mm residual cavity.
• Easy to Install: Designed to match standard cavity wall tie spacing, the boards are lightweight and rigid, making them easy to transport, handle, and fit.
• BBA Certified: The 140mm full fill Thermaclass Cavity Wall 21 is BBA certified, confirming its suitability for specified full-fill cavity wall applications when installed, used, and maintained according to the certificate. For detailed information and restrictions, refer to the BBA certification page.

Key Considerations

When using Soprema 140mm Thermaclass 21 Cavity Wall 21, ensure that the product complies with all relevant national Building Regulations and guidelines, as well as local, national, and other applicable standards for your construction or application. This includes adhering to fire safety requirements and applicable height restrictions.

External Wall Insulation - Full Fill Masonry Cavity Walls

140mm Full fill masonry cavity pir insulation involve installing insulation within the cavity between two layers of masonry, providing continuous thermal protection. This method enhances energy efficiency, reduces heat loss, and improves the overall comfort of the building. Using high-performance insulation materials, such as 140mm polyisocyanurate PIR boards with low emissivity facings, ensures excellent thermal performance. 140mm Soprema Full fill solutions can simplify installation and maximize insulation effectiveness, contributing to a more sustainable and cost-effective building envelope.

Have a browse of our Soprema Insulation stock and filter by thickness or coverage on the left-hand side of the page. If you’d like to talk through the suitability of some products for your project, or get a quantity discount quotation please call us by phone on +4402039519012 , email sales@insulationstoreonline or Live Chat - Lowest UK Celotex/Soprema Insulation Prices.