Just discovered a load of rain damage to an outside wall on an upper
floor. The guttering had come away and when it rained the water
streamed down the wall and seeped through into the inside of the
house. (1890s built).
I had the guttering repaired but now I'm waiting for the wall to dry
before stripping the rest of the wallpaper. Some of the plaster has
come away and the rest around the damp area feels hollow.
I intend to wait a couple of weeks to get the wall dried then patch
the holes where the plaster has come away. The hollow plaster I intend
to deal with by drilling a series of small holes about 200mm apart and
injecting a thin solution of plaster. I've done this on other walls
where the plaster has had a hollow sound to it and it seems to have
solidified it and sealed it back to the brickwork. The difference is
the plaster then had been dry. This has been soaked.
Does anyone have any knowledge of whether this is a reasonable way of
fixing the problem or am I faced with stripping the whole lot off and