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Damp?

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Can anyone tell me or confirm if this is in fact damp in my home? And what would be needed to treat / sort it
 

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What is directly outside?

Could be condensation....
 
All different rooms, mainly exterior walls. But one is a wall with chimney breast above and adjoining with neighbour. I have tried de humidifiers incase it was condensation and it does dry it out a tiny bit but doesn’t solve it and it returns once turned off
 
Have you noticed when the damp stains first appeared?
Did the water marks show up during the summer?

It does look like condensation, but that might not be the definitive answer.

Kitchens are particularly prone to damp because warm air is constantly circulating in the space.

The second photo could indicate penetrating damp. If that’s the case, the issue might be a leaking or blocked gutter letting water in.

Do you dry clothes on the radiator?

And do you regularly open the windows or use the trickle vents?
 
All different rooms, mainly exterior walls. But one is a wall with chimney breast above and adjoining with neighbour. I have tried de humidifiers incase it was condensation and it does dry it out a tiny bit but doesn’t solve it and it returns once turned off
What is the house age and construction.

For example are the walls solid or cavity construction?

What sort of heating do you have? And how long is it on for?

Have you had cavity wall insulation fitted?


If your walls are very cold, it may be condensation.

It’s a bit random for damp
 
The house is around 130 years old. The wall is adjoining to a neighbour, cavity wall. We have central heating, not on a lot, we have electric fires which are on a lot to warm the house. Unsure on what insulation is inside the cavity wall. The walls are quite cold to touch but not wet. I have the windows on an open latch pretty much all the time and I don’t dry clothes on the radiators.
 
from experience of having had four old houses requiring remedy,Id say rising damp at the lower areas and penetrating damp at the upper levels
If its 130 yrs old there would have been normally no insulation between leaves of walls.
As juassic park says check for leaking rainwater goods (I had an old cast iron downpipe that had completely rotted out at the back and was splashing water down the wall) or chimney brick pointing Chimney pots haunchings etc.
Holes in window sills can direct water in.
At the lower levels check the walls outside a pointed decently and they are clear of piles of dirt debris etc so 'outside is lower than inside' all the way round.
Your neighbours however could be the problem with leaking plumbing etc...

If its rising damp the only reasonably reliable remedy is removing the old plaster and replacing with Limelite at least a metre up the wall.
I had one particularly bad house which needed the entire ground floor doing up to ceiling hight.The walls, once bared ,told a catalogue of failed "wonder cures"
If someone tells you you need silicone injecting into the walls politely walk away...
 
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Do you dry clothes indoors ,? If not looks like penetrating damp , especially on a chimney breast , check the roof .If someone tells you it’s rising damp, politely walk away .
Photos of roof ? Chimney?
 
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