Wallpaper adhesives stick best on porous surfaces and coated papers are known to not be absorbent whatsoever.
Wallpapering over vinyl wallpaper.
Otherwise perform the same steps as if you were painting over your wallpaper.
You must make every effort to remove vinyl coated wallpaper first.
Wallpaper adhesives stick best on porous surfaces and coated papers have zero porosity.
In this video i demonstrate how to hang wallpaper over existing wallpaper.
Vinyl is nonporous so new wallpaper will not stick to it and adding a layer on top of it will create mold.
Unfortunately wallpapering over vinyl wallpaper is not an option.
You must remove it before putting new wallpaper up.
The reason for this is based on the principle of adhesion.
You should make every effort to remove the vinyl wallpaper first before trying to cover anything.
The only wallpaper that is nearly guaranteed not to cause you residual problems if you leave it on the walls is non coated wallpapers.
How to hang new wallpaper over old wallpaper.
Stripping old wallpaper is a time consuming task you.
The existing wallpaper s material.
When moving into an older home finding remnants of previous occupants wallpaper isn t uncommon.
The reason for this is based on the principle of adhesion.