Stripping wall paper
Choose an inconspicuous corner at the top of the wall and lift the wallpaper with the tip of the knife.
As close as possible to the wall, hold the corner of the wall paper, try to take it off the wall. Peel wall paper off metope toward oneself direction, remove wall paper more easily so. If it is a peeling wall paper, as long as you exert a smooth, moderate strength, the wall paper will be off the wall.

Cut and soak
Use an art knife, razor blade, or wall paper scraper to cut the old wall paper horizontally, about 20 or 25 centimeters apart.
Apply water or wallpaper remover and wait a few minutes to fully soak the wallpaper.
Repeat the same treatment on the next strip of wallpaper, then return to the first strip and rehumidify it with a preparation from top to bottom.
With a multi-purpose wall scraper about 8.9 cm wide with a movable blade, the wall paper begins to be stripped. Starting with a cut horizontal wall paper tape, place the blade under its upper edge and the scraper at a 30 degree Angle to the horizontal surface. A wall paper of the same width as the scraper will fall off with the blade and roll on the blade as the blade pushes down.
Keep pushing down until the wallpaper can’t be peeled off. If the wall paper strip is broken, resoak the area and start scraping off another strip.

Steam method
It’s not easy to peel off the old wallpaper. You can rent a steam engine, but you’ll still have to use a wide-blade putty knife to scrape off most of the wallpaper.
When the water is hot, press the steam plate against the wall until the wall paper at the edge of the steam plate darkens due to dampness.
After steaming half of the tape, pull up a corner of the top of the wall paper with a nail or art knife and tear off the wall paper. If cannot tear off wall paper, usable metope scraper is scraped off. You may want to steam the same area twice or three times to loosen the older adhesive behind the wallpaper.

For waterproofing paint, using alcohol to clean the wall paper glue will not cause much damage to the wall, but the alcohol volatilization can minimize the damage to the wall. However, it is important to note that the concentration of alcohol should not be too high, otherwise, the volatile nature is too large, easy to make white walls yellow or black, this is a very bad phenomenon.

This method USES physical friction. But because salt is a white crystal, you don’t have to worry about the different colors that friction brings to the walls. In the process of friction, you can use white gauze fabrics or be able to package to salt, pack a small bag of salt, rubbing gently, slowly you will find that the wall paper residue of glue is slowly disappear, in turn, stick on the fabric, you as long as the friction and stop and remove the gauze above the clouds of glue, not to mention the following things.