Knauf AQUAPROFIL are produced from steel raw materials with a coating comprising aluminum, zinc and silica. The coating is performed by hot immersion, in continuous flow. The main characteristic of this the treatment is the excellent corrosion resistance. The Knauf AQUAPROFIL can be used in any drywall construction. However, their use is highly recommended for external walls with Aquapanel cement board, bathrooms, saunas, steam room, Jacuzzi, kitchen, dressing room, indoor swimming pools and any other place with high moisture stress. Generally, not every type of steel processing, provides adequate protection from exposure to alkaline environment. Therefore, when lining with Aquapanel, due to the alkalinity of the cement, the use of breathable membrane Aquapanel tyvek House Wrap , between the frame and the the cementboard, is recommended, in order to avoid direct contact of the two materials.