RISING DAMP BACK?

[Smiths2509]

first time post here but could you please offer me some advice on damp in my property, 2 years ago I had my walls tanked and bricks injected this was throughout my whole down stairs kitchen passage and sitting room, 1 year later it’s all back exterior is affected way more then my interior but plaster is starting to bubble with salts and paper is peeling at the bottom again this is all the way around my house all drains flowing fine was a crack storm pipe hence the garden like a building site replaced gulley down pipes and pipes underground
thank you so much in advance

Hello, I don’t know much but we had similar. Often damp caused by cement on one wall so bricks can’t breathe.
this is a very useful site
https://www.heritage-house.org/damp-and-condensation/all-about-the-pca/peter-cox-damp-proofing-a-massive-fraud.html

Thank you so much I will check this out, I’m at my wits end x

Hope it helps x

From the pics it looks more like water is leaking from inside over the dpc and down the outside of the wall.

having issues with this in my 1930s built property to. I've just had to replace a large amount of my sub floor due to damp. I've recently installed dry rods all around my house not been installed long enough to see any effect yet though. have you tried dry rods? supposed to be one of the best rising damp treatments. it does look like that damp on your first pic is coming from inside to out. definitely no drains/pipes you are unaware of?? x

What kind of work would this entail sorry if I sound silly I have no clue what I’m talking about. X

Nope, replaced down pipe gulley and pipe underneath gulley, all pipes realigned storm pipe and another one running to man hole, had injections and walls tanked but it’s not so bad inside, bricks are all damaged underneath and some have spalled x

The green growth round the bottom of the downpipe shows that there is an issue with water leaking somewhere there. Are the gutters blocked and overflowing? Or is there a crack somewhere in the pipe?

The ground levels outside the house might be a bit too high but it is difficult to tell. Do you know where the original damp proof course is? (Not where the injections were done).

This is interior it’s not half as bad before I had damp proofing in but it’s all in the same place

All guttering and pipes are rectified there is was cracks in the pipes and been fixed up now after a drain survey the dpc is quite brittle I will attach some pictures x

to be honest I'm unaware as to why the damp was so bad in my house too. I appeared to have some kind of condensation under my sub floor in the foundations that was probably the cause of why my wooden floor joists and boards had rotted no idea why I had this condensation as was fully ventilated. appeared to have no leaking drains blocked guttering pointing seems OK. now the weather is warming up I'm going to paint water seal on the external walls for extra protection. something like this..

https://www.wcp-architects.com/the-rising-damp-myth/

rising damp doesnt really exist and having walls tanked and injected is a waste of time. Looks to me like ground levels are too high outside.

@pigletjohn may have some advice.

I’ve heard that also but I’m just so unsure of what to do and thought I’d leave it to the “professionals” thought i was all sorted after having to decant the property as it was the full downstairs, living room kitchen and passage and now It’s back, I’m a single mother and I take any advice thank you so much everyone x

The last photo in your original post shows a lot of green on the wall. Is that a current picture because if so then there is still an issue unless it has been fixed in the last couple of weeks.

So from your pics it looks like the dpc is only about a brick higher than the outside ground level? The exterior ground level needs lowering. Do you have concrete or suspended wooden floors?

I concur with the high ground level. Ground needs to be at the level where the red line is drawn the line.

The gully under the drainpipe needs lowering too.

I have concrete floors everything was was fixed up at the gulley and it’s back the underground pipes are have shown two cracks in the survey which will be aligned I thought the ground level was maybe to high but apparently it’s not but I think they will tell me anything for money and I believe them as why wouldn’t I? I really appreciate all your help x

The green stuff has came back after a full replacement of gulley underground pipe and down pipe x

Ok. The first thing I would do is wait till next time there is heavy rain and go and walk round the outside and check all the gutters are working properly. There shouldn't be anything running over the edges, it should all be going down the pipes. No drips anywhere.

Don't worry. Although damp problems are annoying, they don't cause irreparable damage quickly so you can take your time and eliminate the causes one by one.

Are there any signs of damp on the concrete floors inside the house or just the walls?

What you are checking for when it rains is water running over the edge of the gutter and then splashing on the ground near the base of the wall or running down the downpipe. I assume when you say the gutters and downpipes were sorted they did the rainwater downpipe and the toilet waste?

Yeah all drains are fine and corrected checked everywhere with cctv for underground pipes they found a cracked pipe from storm drain and a one across the garden, all drains are working as they should be now it’s all been corrected no splashes ect when it’s a sunny few days the walls above the dpc looks as though it’s dried but a lot of salts in it’s place then a tide but only on the exterior so I’ve not noticed the flooring but that was ok the last time I will say my home is freezing downstairs. X