Soprema Thermaclass Cavity Wall 21 - 1190mm x 450mm

• Thermal Performance - Good thermal performance with a thermal conductivity of 0.021 W/m.K, reducing the thickness of insulation required to hit the target U-value.

• Low Emissivity Foil Facing - Provides improved thermal performance in sealed cavity air spaces, improving the achievable U-value (based on a residual cavity of 10mm).

• Easy to Install - The boards are sized to fit standard cavity wall tie spacing. They are light and rigid, assisting with ease of transportation, handling and fitting.

• BBA Certified - Thermaclass Cavity Wall 21 has been assessed by the BBA as fit for use in defined full fill cavity wall applications if installed, used and maintained as set out in the certificate. Please read the BBA certification page for full details and restrictions.

Cavity Walls:

Soprema cavity wall insulation provides a highly efficient solution for reducing heat loss and improving energy performance, particularly in cooler climates. Made from high-performance PIR, it delivers excellent thermal insulation while enabling thinner wall assemblies, making it an ideal option for projects where space is limited. The material’s durability and resistance to moisture help protect the building fabric over time, preventing damp-related issues and mould development. Its lightweight construction also simplifies handling and installation, helping to streamline on-site work and reduce labour requirements. In summary, Soprema cavity wall insulation offers a reliable combination of thermal efficiency, long-term protection, and practical ease of installation for both residential and commercial buildings.

Can Soprema insulation be used for retrofitting projects?

Yes, Soprema insulation is suitable for both refurbishment of existing buildings and new construction. Certain Soprema products are specifically designed for timber frame or lightweight constructions, making them effective for improving thermal efficiency and overall indoor comfort in a variety of applications.

What are the thermal properties of Soprema insulation?

Soprema insulation provides high-performance thermal resistance, with low thermal conductivity values that help reduce heat transfer through walls and improve indoor comfort. Its performance supports compliance with building regulations and energy efficiency requirements.

Is Soprema insulation environmentally responsible?

Soprema insulation is designed to provide excellent thermal efficiency, contributing to lower energy consumption in buildings. As with many rigid insulation products, environmental considerations such as global warming potential and end-of-life disposal should be taken into account. Soprema provides guidance on responsible product use and recycling where applicable.