Zentia / Armstrong RH100 Hydroboard ceiling tiles can resist permanent RH up to 95% at 30°C without sagging, warping or delaminating and temporary conditions of up to 100% RH. Hydroboard tiles are dimensionally stable at humidity levels of up to 100% RH and can be installed in temperatures ranging from 0°C to 40°C. This tile is available in either 600mm or 1200mm . This product is particularly appropriate for use in areas such as toilets, shower areas and hydrotherapy rooms.  If you need any further information or assistance choosing the correct tile for you, please speak to a member of our experienced sales team today.   Zentia is the new name for Armstrong Ceiling Solutions. The Armstrong brands will remain the same; however, each product will be rebranded and given new names.