Moisture Resistance

Moisture management is important for the prevention of mould. Knauf AQUAPANEL® Indoor Cement Board is manufactured using inorganic materials, meaning they are unaffected by water and are resistant to mould. Knauf AQUAPANEL® Indoor Cement Board is suitable for use in wet areas such as swimming pools, saunas, and bathrooms.

Knauf AQUAPANEL® Outdoor Cement Board is an innovative way to build exterior walls and façades. The board is the ideal exterior render substrate and can be used for many other surface finishes, such as paint or brick slips. It is a robust, non-combustible cement board, made entirely from inorganic materials and withstands even extreme weather conditions. Its flexibility allows the board to be curved, making it a highly versatile building solution.

The facing can act as a vapour retarder or protective layer, helping to limit moisture movement through the insulation system when correctly installed. This can support the overall moisture resistance of the wall, roof or ceiling build-up.

However, if the insulation becomes wet, its thermal performance may be reduced. That is why faced mineral wool should be kept dry during storage, installation and use, and always installed as part of a properly designed system.

If mineral wool becomes saturated it may lose some of its thermal performance but the extent of the reduction very much depends on the degree of saturation and whether the insulation has been mechanically abused whist wet. If there is no mechanical abuse whilst wet, the product will dry out in time and its thermal conductivity will remain as it was when manufactured but there may be a slight reduction in thickness.

However, if the mineral wool has been subject to mechanical abuse, compression, or loading whilst wet there could be a considerable reduction in thickness which would reflect on the thermal performance once the product has been allowed to dry out.