Possible damp

[MaverickSnoopy]

I've noticed some discolouration on a bedroom wall. I've no idea how long it's been there for. I'm inclined to think it possibly ties in with some mould cleaner that I used a few months ago (no mould there since). However I'm not convinced as I don't recall using the mould cleaner as extensively as this would indicate. It does look like it could be damp.

I sent a builder friend some photos who suggested getting someone to look at the roof. Husband has panicked and emailed a surveyor to come and take a look. It's £400 we can't really afford, especially if we have an issue with the roof. It's not booked in yet.

Do we need a surveyor? I'm just not too sure who to get to come and have a look or what to get them to look at. We can't afford to pay lots of different companies for guess work and want to avoid getting ripped off for something that isn't needed. Any ideas on how best to proceed?

Can you look to get a sample tester, you then just prod the wall and the readings will tell you. I wouldn't go over board at this point, is it possible to look in loft for any damp patches and clean gutterings

You don’t need a surveyor, a roofer will be able to look at your roof and identify any problems. But be warned we had a roofer in recently because we had lots of issues with the roof and roof repairs are eye watering lay expensive. But keeping your home water tight should be a top priority.

You don't need a surveyor yet. There are a few basics to try first.

Check any nearby gutters and downpipes are clear and free flowing.

Go up in the loft and check if you have damp up there - a broken slate or tile?

Take pictures of your roof with your phone and then zoom in. Can you see anything broken.

Very cold weather can cause condensation in a loft or wall where it meets the warm air inside a house. Did the stain appear after the recent cold snap? I found a small patch of moisture on an inside wall, checked the brickwork outside and found a hole through the mortar that was breaching the cavity wall and letting the cold in, causing condensation. I've repointed the hole, 15 minutes and a small tub of mortar from B&Q solved the problem.

Thanks all. That's very helpful. I have a moisture detector that I'd forgotten about. No batteries though so will get a new battery and check it out. I'll also take a look at the other suggestions. The loft does have some condensation after the recent cold snap and on that side of the house.

Moisture detectors are nonsense, look for a physical source that your home isnt water tight and then fix it

Post xome photos please, showing the damp patch. Stand back to show the whole wall, floor to ceiling. Include any chimneybreasts and radiators.

What is on the other side of this wall? E.g. a leaking gutter?

Do you get morning condensation on the window?

Where do you dry washing?

How old is the building?