Weight Limits For Tiling Walls

Brick, plaster or cement board - what your substrate means for your tile choice

Wall Substrate

Maximum tile weight

Cement:sand rendering

Generally no restriction A

Gypsum plaster

20kg/m2

Gypsum plasterboard (12.5mm thickness)

32kg/m2

Gypsum fibreboards

40kg/m2 B

Glass reinforced cement-based boards

50kg/m2 B

Lightweight foam-cored tile backer boards

60kg/m2 B

Other rigid tile backer boards

Consult manufacturer

NOTE Where multiple substrates are installed using only adhesives e.g. tile backer board bonded to plaster, the substrate with the lowest value will determine the recommended maximum weight of tiling. In this context tiling is defined as a tile plus its bedding and grouting material

A Provided the rendering has sufficient composition and has been installed correctly to achieve high strength
B Guide figures only. Certain boards may be capable of carrying greater weights - consult with manufacturer for confirmation

 

British Standards Institution (2018) BS5385-1:2018: Wall and floor tiling. Design and installation of ceramic, natural stone and mosaic wall tiling in normal internal conditions. Code of practice. Available at: bsigroup.com