Explore our range of clay building boards for breathable internal construction, including both Heavyweight Clay Building Boards and Lightweight Clay and Hemp Boards. These natural boards offer a practical way to create solid, vapour-open wall, ceiling and drylining systems while retaining the moisture-regulating benefits of clay.
Clay building boards are ideal for homeowners, self-builders, contractors and specifiers looking for a faster alternative to fully wet-applied clay plaster systems. They are especially useful where a drylining solution is preferred, but a natural, breathable finish is still required. Suitable for internal walls, ceilings, studwork and renovation projects, they form an excellent base for clay plasters, clay decorative plasters and other natural finishes.
Our Heavyweight Clay Building Boards are designed where a denser, more solid board is preferred, helping to create robust internal wall and ceiling linings with all the character and performance of clay. Alongside these, our Lightweight Clay and Hemp Boards offer an easier-to-handle option that is especially attractive for homeowners and installers who want the benefits of clay in a board that is simpler to lift, cut and fix on site. The lightweight hemp-clay boards are made from clay, hemp shives and fibres, sand, and jute mesh reinforcement, and are suitable for walls, ceilings and sloped roofs.
These boards can be used on timber or metal substructures and, in the case of the lightweight hemp-clay boards, also on suitable full-surface backgrounds. The lightweight range is available in 14mm and 22mm, with the 14mm boards suited to 400mm-centred studwork and the 22mm boards suited to 400mm or 600mm-centred studwork, making it easier to choose the right board for the build-up and fixing layout required.
As part of a full clay system, clay building boards are typically finished with Clay Adhesive & Reinforcement Plaster, reinforcing mesh, and then a final finish such as fine clay plaster or clay decorative plaster. This creates a complete breathable internal wall system that supports good indoor humidity control, natural finishes and healthier interior environments.
From heavy clay boards for solid internal linings to lightweight hemp-clay boards for easier handling and installation, this category brings together practical natural drylining solutions for breathable homes, heritage projects and low-energy interiors.
