Reliable Foundations for Walls and Floors with Marmox Multiboards

Walls and floors in bathrooms, wet rooms, and commercial spaces need materials that are practical, durable, and straightforward to work with. Getting the build-up right from the start is essential — and that’s where Marmox Multiboards come in.

Marmox Multiboards provide a fully waterproof base suitable for both walls and floors, ready to be tiled, plastered, or rendered depending on the finish required. Designed to control moisture in demanding environments, they help protect the structure from damp and water ingress while providing a stable, dependable surface for finishes. Lightweight but strong, the boards can be easily cut and shaped on site, making installation around pipework, corners, and custom layouts quick and manageable.

In addition to interior applications, Multiboards can also be used externally as a render board, providing a reliable, insulated backing for rendered finishes. This flexibility allows the same system to be used across different areas of a project, helping maintain consistency in performance from inside to out.

Multiboards are also well suited for use with underfloor heating systems. Their insulating core helps reflect heat back up into the room instead of allowing it to dissipate into the subfloor, improving efficiency and helping spaces warm up more effectively while maintaining comfort underfoot.

Suitable for a wide range of wall and floor applications, Marmox Multiboards create a smooth, reliable surface that supports long-term performance behind tiles, plaster, or render. Whether used in residential bathrooms, external façades, hotel projects, or high-use commercial interiors, they provide insulation that is waterproof and dependable.

With waterproof performance, thermal efficiency, and ease of installation combined in a single solution, Marmox Multiboards help create walls and floors that remain dry, warm, and ready for everyday use — forming a solid foundation for spaces designed to last.