Hi there,
We moved into our 1930's semi last year and had our hallway/stairs skimmed in December. it all dried out lovely and then we noticed 2 damp patches at the bottom stairs of the stairs. we tried drying it out with a heater but it keeps bleeding back through and seems to be spreading. the wall concerned is on the back of an outside rendered wall, were just wondering if the damp is penetrating through the outside wall? there are also a few little patches elsewhere on same wall but once you go past 3rd step on stairs all dry. would appreciate any advice, thanks!
We moved into our 1930's semi last year and had our hallway/stairs skimmed in December. it all dried out lovely and then we noticed 2 damp patches at the bottom stairs of the stairs. we tried drying it out with a heater but it keeps bleeding back through and seems to be spreading. the wall concerned is on the back of an outside rendered wall, were just wondering if the damp is penetrating through the outside wall? there are also a few little patches elsewhere on same wall but once you go past 3rd step on stairs all dry. would appreciate any advice, thanks!