Fermacell gypsum fibreboard has now received certification as an external rainscreen backer board.


The BBA assessment covered Fermacell’s structural performance, finding that it contributes to the racking resistance of timber frame walls when used as a sheathing board. It also satisfied the Class 0 (low risk) fire performance surface requirements for external and internal linings.

In addition, the latest certification acknowledged that Fermacell boards can be used acoustically to improve the sound insulation of new and existing walls and ceilings, and that it does not promote infestation and successfully resists attack by timber-destroying fungi.