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Damp Proofing Questions

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1,260 Damp Proofing questions

Patchy Damp Spots


Since moving into our end of terrace Victorian House 2 years ago we have been trying to identify the root cause of patch damp spots.

They mainly reside in our dining room within the alcoves several inches above the skirting with some small patches on the chimney breast.

We also have some very minor spots in the Lounge and the 2 bedrooms above the lounge and dining room.

We have had many builders round and they aren’t sure.

I’m pretty sure it’s not the roof as we have had that checked also.

Could pointing be the issue? I’ve seen worse but it’s not brilliant and we appear to have some suspect bricks.

Should we also invest in some sort of damp proofing?


Injection damp proofing, has it actually been done?


I have recently had a local company out to carry out some damp proofing work on some internal brick walls. They are at the stage now where they say so far they have completed:

- Taken off the plaster to around 1m high.
- Drilled the two lowest courses of mortar approx every 100mm.
- Applied the injection damp proofing.
- Re plastered The Walls

All they need to do is re attach the skirting boards.

At this point i have decided to have a look at the work and from what i can tell, no injection has taken place, All of the holes which are still visible are empty and i can easily stick a screwdriver in them to approx 3inch deep, scrape away a bit and brick dust comes out.

Common sense and a quick images search on google suggests they should be full with something resembling a silicone seal.

Some images here:http://bit.ly/1TSLjxb

Any advice appreciated.

Penetrating damp on internal adjoining wall

Live in mid Victorian terrace and have discovered a damp patch on the downstairs wall that joins on to next house. It is half way up the wall but is dry above it and below it. Behind the wall is my neighbours chimney breast. He says he has no problems with damp. No signs of damp on the same wall upstairs. Is it likely to be from the roof or could there be another cause? I do not see any signs of rising damp. Floors feel dry and the cellar is dry. What should my next move be?

condensation and mould

I live in a flat on third floor no one above. I have bad black mould on exterior wall in bedroom. how can I remove the mould. have tried household cleaners.
How can I prevent it coming back. its the only room I have the problem. I have central heating. I don't put wet clothes on radiators. I have been told to line the wall with insulated plasterboard. It makes the room cold. Any advice would be welcome.
Thanks Lyn

Damp on bedroom wall

Hi - I'm considering buying a house which has some damp under a first floor bedroom window. I'm aware this can't be rising damp, but want to get a feel for how easily rectified the problem may be. The room is double glazed and also has a old chimney which appears to have been sealed with no ventilation - could that be part of the problem? It's a Victorian era terraced.

This is a picture


Plasterboard sides of windows getting damp, and growing mold?

On the sides of my bedroom window the plasterboard is damp and is now getting mold. I have cleaned it with bleach and water but because its damp so it just keeps growing back. I have checked the outside and its all sealed and don't know why its getting so damp?

Any advise would be great, thanks.


Mould in spare bedroom wallsl

Hi there in my spare room I seem to get damp/mould coming through the wall, not sure how to make this better as it does get really bad then it will go again but it's a on going thing,

Thanks Liam

Renovation project with 30yr old damp proofing

We've recently bought a fabulous renovation project and intend on doing everything to it. The house was built in 1908 and has a rendered exteriour with quite a few cracks, we did have a sctuctual survey done before we proceeded with purchase but it seems the cracks have come from a new road which runs along the side of the house causeing vibrations.
Anyway, back to my initial question...
When we purchased the house there was a damp proofing guarantee which was passed to our solicitor - this expired July 2014. As we've taken all ground floor walls back to the brick and intend in replacing the lintles above the windows. Is it worth or is it required, to have the damp proofing done again? And what are the average £ per sq mtr?
Thank you

How to trace source of damp patch on chimney breast? Chimney pot capped and stack repointed

There is a damp patch on the chimney breast which has been there for some considerable time. The chimney pot has been capped and the stack repointed. The chimney is built on the outside of the house.The patch is on the wall in the downstairs room. Originally there was a solid fuel fire now replaced by a gas fire which is rarely used. Rain does not automatically increase the size of the patch. Has anyone any ideas where the problem comes from or how to trace the source.

What is best to cure rising damp at my property - inject or vandex?

Hi i have a victorian terraced house that suffers from rising damp. I have been given 2 options to cure the problem and i want to know the best solution.

One is to inject and sand and cement and then replaster the walls
The second is to vandex the walls the sand and cement and replaster

Can anyone help me making the decision
Thank you

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