Preparing your walls for wallpaper is the same prep your painter would do for a good paint job — except with different primer for wallpaper.
Here is the basic process…
- fill all the holes and cracks with spackling paste or dry wall compound.
- the large cracks in the corners should be filled with a nylon mesh and the spackle compound to stop cracking.
- sand everything.
- spackle everything again to make sure all is smooth with no dents or holes.
- sand everything again.
- wipe off the walls with a damp cloth so all dust is removed.
- roll a coat of wall covering primer, preferably Shieldz pigmented wall covering primer paint manufactured by Zinser sold at Sherwin Williams or Benjamin Moore stores.
- If you see ridges or holes after the primer is up, they need to filled again until it is smooth.