Anyone know what type of damp this is?

[bloodywhitecat]

We have a house with one damp wall, the wall was once an outside wall but now is the wall between the kitchen and dining rooms. We think there is no damp proof course but there are air bricks which were earthed over but we uncovered about a year ago, the wall is damp all year round and the paint peels off. We have mentioned it every time the letting agent does an inspection but nothing is ever done about it.

It's difficult to say without knowing more about how the house is constructed. However, you sometimes get damp on previously outside walls if cavity trays weren't inserted in the wall above the extension.

All we know is that the house is around 400 years old with solid walls and when we lift a floorboard we can see bare earth and sometimes a vole or two .

Bump, @PigletJohn can you shed any light at all?

If it's got solid walls, it won't be the lack of cavity trays causing the problem.

Our house is around the same age and we have a couple of patches that look like that. One was caused by water getting into the fabric of the wall from above and reasonably easily fixed. The other is simply damp rising from the ground. There's not a lot than be done about the latter, not without major (and disruptive) work anyway. We just accept it as being part and parcel of living in a very old house.

Thank you, I suspect this is rising damp so I find that reassuring but I was worried there might be a cracked pipe (but logically I guess that wouldn't show as patches across the whole wall).

what is in the other side of the wall, and higher?

A dripping gutter or broken downpipe can make the wall wet.

If it is rendered, water can get behind a loose section and fill the bubble.

You mention a kitchen. If there is a water pipe in or on the wall, it may be leaking. Or a watery appliance.

Is it a ventilated wooden floor, or a solid floor? Is the floor damp?