If a new unpainted plasterboard wall is to be wallpapered the application of a single coat of Gyproc Drywall Sealer will make steam-stripping easier at a later date.
Vinyl or other low-permeability wall coverings restrict drying of water-based adhesives. This combination should, therefore, not be applied direct to plasterboard treated with Gyproc Drywall Sealer. The use of specialist adhesives, for example with cloth backed or solid vinyl wall covering, may result in damage to the plasterboard surface during subsequent stripping. If the use of such adhesives is necessary, consider using a lining paper before applying the wall covering. Always refer to the wallpaper manufacturers instructions.
Please refer to White Book Chapter 08 Section 03 Page 04 for more details.