First you need the right tools and equipment. You can get these from your specialist dealer who will also be happy to advise you. The following equipment will be needed to do the job properly:
Plastic spatula, smoothing brush, sponge rubber roller, pasting brush and bucket, seam roller (conical), rule, pencil, wallpaper scissors, cutter knife, metal scraper, plumb line, wallpapering bar, cutting ruler, wallpaper knife
Preparatory work is likely to be extensive and complex especially in old buildings. Levelling out and grinding the surface is always worth the effort and virtually guarantees a perfect result. Old wallpaper must be removed completely and old and scaling dispersion paint should be rubbed off. Coats of lacquer must be treated with leach and painted with a bonding agent. Wallpaper primer spread onto the wall can be used to level out minor rough areas and cracks.
You should use a base wallpaper if the new wallpaper is light in colour, smooth or glossy. Otherwise, any unevenness might become apparent when light falls on the wall from one side.
Cut wallpaper to the right length
When cutting lengths of wallpaper, calculate the ceiling height and add 10 to 15 cm to determine the correct length needed. Be aware of the pattern repeat and cut accordingly.
Prepare wallpaper paste according to the general principle that the heavier the wallpaper, the less water should be used for the paste. Stir the paste powder thoroughly and leave the paste to soak until it has an almost transparent quality. A 'thicker' paste allows the application of a thin layer onto the wall.
Wallpapers should be attached end-to-end. Old wallpapering techniques such as affixing 'away from the light source' are redundant now since overlapping and the associated formation of shadows no longer apply. Start at a window and proceed from there in both directions to make sure the pattern is identical.
Arrange each initial strip of wallpaper on a new wall using a plumb line to ensure that all subsequent strips are attached in an absolutely vertical direction.
Attach the strip allowing for some excess length at the top of the wall. As soon as it sticks to the wall, release the lower section of the strip. Use a brush to press and smooth out the wallpaper towards both sides. Use a rubber roller for delicate wallpaper. Tip: Make sure you remove any residual paste immediately.
Drying should not be accelerated by creating a draught or by turning up the central heating system to full capacity. If your workmanship has been neat and tidy, any folds will dry off overnight.
All done! Enjoy your new room