High moisture levels can lead to mould and staining, and could even cause structural damage. This moisture-resistant board stops humidity from getting in to ward off mould and help protect the building's structure. Boards won't need to be replaced after exposure to high humidity. It helps prevent structural damage caused by moisture and reduces the risk of mould and staining caused by moisture. It is available in a size of 8ft x 4ft and has a thickness of 12mm.