I restore a piece of an old house: walls lined with wet paper. Under the paper, brick that does not look wet and at the bottom of the wall a layer of concrete covers the base that seems to be mortar with small pebbles included.Does I remove the cement that covers the wall and then perform a treatment or replatrer the wall?
If the wall, once removed the wallpaper, does not show traces of moisture, if the cement (actually the mortar) applied at the bottom is not blown, cracked, saltpetre... why not keep it?
Depending on the desired finish, it is possible to apply plaster, or interior decorative coatings adapted to these supports.
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