Wallpaper can discolour if it is hung on walls that have not been properly sealed or if you happen to get some paste on the designed face of the paper. Remember that colours will fade if they are subjected to strong sunlight. Occasionally, you may find small patches of mould growing on wallpaper. This could be due to damp walls or heavy condensation, or old patches of size or paste left on the walls at the preparation stage. While wallpapers will cover minor defects in walls, the cause of any damp must be checked before you cover it up. Rust spots can show up if you hang paper over steel pins that have not been sealed. When preparing a wall for papering, check it carefully and mask or seal any old nails or pin marks before you line it.
Previous
