Siniat recommend the use of a Moisture resistant plasterboard in areas of high humidity like bathrooms for example. The final finish will be the first line of defence against moisture, but over time water can soak through grout if not sealed adequately. A moisture resistant board will give further defence to temporary exposure. 

Siniat supplies Moisture Board, Fire MR Board, and LaDura which have levels of moisture resistance.

Siniat Aquaboard should be used in extreme circumstances such as swimming pools or wet area bathrooms.