Mitcham Builders Merchants supplies high-performance cavity insulation products to help you build warmer, more energy-efficient homes and commercial spaces. Whether you’re working on a new build or upgrading an existing cavity wall system, our range is designed to reduce heat loss, lower energy bills and meet current building regulations with ease.

We stock cavity insulation boards from trusted manufacturers, offering excellent thermal conductivity and moisture resistance. Lightweight and easy to install, these boards fit snugly between cavity walls to provide continuous protection without compromising structural integrity. Suitable for both internal and external applications, they’re an ideal choice for contractors, developers and DIYers alike.

If you're looking to buy cavity insulation, you’ll find everything you need at Mitcham Builders Merchants. Our full range is available to browse online, with fast UK-wide delivery and competitive prices. Alternatively, visit our Croydon store to view products in person and get expert advice from our experienced team.

Build smarter and insulate with confidence—choose Mitcham Builders Merchants for reliable cavity insulation solutions that stand the test of time.