i have a wet patch on an internal wall in the centre of the house it is both sides of the wall ie on the living room and hallway less then a foot in dia. the paint is wet flaky and smells fusty . i do know the external pointing needs doing and have heard suggestions that the external walls may be so wt this is causing an internal problem ..... any suggestions
Problems can occur on internal walls , if the floor has been filled in .
The reason being is many companies who do under pinning and concrete floors do not allow for the damp proof course , and once filled in are above this .