Damp

[^woody^]

Using stain blockers is one of the worst things you can do when treating hygroscopic damage.
The blocker stops the wall plaster or brickwork from breathing. This will cause the hygroscopic solution to move up, down or sideways, away from the blocked surface.
Sealing the wall with blocker can attract condensation.

Lol.

You really do not have a clue do you. SMH

 

[tell80]

Now thats what I call a real technical answer. As soon as you are challenged with a technical argument you scamper off.
Your good for sniggering sarcasm with new OP's but lose it when challenged - what a loser.

Come on big shot, leader & sole member of the west midlands liberation front. Surely, 16 yrs of googling must have given you some idea of the building trade? Your claim to own a wheel barrow
doesn't actually qualify you to be a surveyor or a tradesman.

Retired for about 20yrs you are in your eighties - so when did you last do a survey or even work?

 

[^woody^]

From my limited experience

Let's just leave it there shall we.