damp and mould on walls and ceiling

[joe-90]

No it's not. If the guttering is leaking then the water will be drawn up the brickwork from the bottom and getting trapped behind the render. In winter the frosts freeze the wall and the render cracks. The render IS the problem.

 

[Alastairreid]

If the gutters leaking it can hit the wall and run in through the dodgy render!

Why in your considered opinion is this the only area suffering from damp?

 

[joe-90]

Because damp makes it a cold wall that attracts condensation. If you just go blithely re rendering you won't get rid of the damp which is why the op needs to PAY a proper damp surveyor. It's crazy to guess from a keyboard, you need a proper site visit and a good understanding of how damp works.

You still haven't explained why houses without render aren't damp.

 

[Burnerman]

In this case, the dampness apparently appears after a rain storm - which indicates that the water is coursing through the cracks in the render, and through whatever is beneath.
We don't know the condition of the original stone or brickwork, likewise the pointing thereof - and to remove the entire render would be one hell off an issue.
Its perfectly correct - properties made from quality bricks or stone need no render, but sometimes the porosity of the base material is questionable. One property of mine (1920's approx) is constructed from a cheap quality brick.....all that was available after WW1. Its rendered and painted - and it aint damp.
If it was my property, I'd make good the render and go from there.
John

 

[joe-90]

But that's when the ground gets sodden because someone has been too lazy to repair the guttering. This is then wicked up the wall and cannot dry out (breathe) because of the render.

 

[Burnerman]

Yep, 10 out of 10 for that one - completely agree!
We've already advised the OP to remove any soil / shrubs etc from the immediate area of the building, free any blocked air bricks et al and guttering repairs should be obvious - but aren't to some!
John

 

[Alastairreid]

You still haven't explained why houses without render aren't damp.

Some are!

This one is because the render is defective.

Bet it has gypsum plaster as well.

 

[joe-90]

Tiny cracks won't let water in as the water doesn't even touch the walls due to the overhang. Anyway, the OP has cleared off to get more free advice from clueless builders so good luck to her.

 

[Alastairreid]

She will be fine now joe! you put her right.

 

[joe-90]

Just as well someone has.