ISOVER Cavity Wall Insulation CWS36 100mm is a high-quality glass mineral wool designed for excellent thermal building insulation in homes and commercial properties. With a coverage of 6.55m² per pack, this CWS36 insulation roll provides strong energy-saving performance while helping to create a warmer, more comfortable living environment.

Ideal for fitting between wall ties in new builds or refurbishment products, it’s lightweight, flexible, and easy to install. The 100mm insulation for cavity walls creates a snug fit and consistent coverage, effectively minimising heat loss and improving long-term energy efficiency.

Made from up to 75% recycled materials, this lightweight glass wool insulation is not only effective but also environmentally responsible. It’s non-combustible and designed to meet UK building regulations for thermal efficiency and fire safety for dependable performance year after year.

The ISOVER CWS36 100mm insulation roll is a trusted choice among builders, installers, and homeowners alike.

Key features:

• 6.55m² coverage per pack
• Lightweight, flexible, and easy to install
• Excellent thermal building insulation
• Made from sustainable glass mineral wool materials
• Provides energy-saving insulation with added acoustic benefits
• Non-combustible
• Compliant with UK building standards

FAQs

What is ISOVER CWS36 100mm used for?

This insulation is made for wall cavity insulation. It is designed to improve energy-efficiency and comfort in both new builds and renovations.

Does it provide acoustic insulation too?

Yes. As a glass mineral wool, this wall cavity insulation naturally reduces airborne noise as well as heat loss to help create a quieter space.

Is this ISOVER insulation environmentally friendly?

Absolutely. It’s manufactured using recycled materials and contributes to energy-saving insulation that supports a more sustainable property.