High µ value, thereby preventing the effects of moisture and the associated changes in shape of the substrate. For dry areas as well as areas subject to moderate moisture (in wet areas, such as private showers and bathrooms). Moisture barrier for wood chipboard (V 100), wooden floorboards, OSB boards (e.g. Kronospan), plasterboard and gypsum fiber boards. Preventing changes in shape due to the effects of moisture when dry chipboard is painted on all sides. Primer for chipboard before laying tiles and panels with PCI tile adhesives (see table on page 3). Water vapor retardant coating for cementitious substrates (e.g. concrete ceiling in swimming pools), as well as for FERMACELL Powerpanel SE panels. Water vapor retardant coating on internal plastered thermal insulation systems to pre.