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Hi all, I have read lots of threads about damp but find that no two issues are the same. My problem is on an internal wall, that is a "peninsula" wall rather than a wall on the perimeter. There are a combination of damp patches, a damp patch from the skirting and bubbling lining paper. I think...

Thanks @Mr Chibs for all your advice. I have researched alot about damp and ventilation but building construction is beyond me so all of the responses have been very helpful.

@Mr Chibs it is difficult to push a garden cane in as the vent gaps are narrow and the ground is high so cannot get the angle. But a 15cm screwdriver goes all the way in. I would say a cane would. There is lots of earth in there and the void is only 1 course deep, so either poor backfilling or...

Definitely a void space @sxturbo which can be seen through the airbrick (in the screenshot above). Solid walls. But yes, you echo what others have said that blocking air brick with concrete floors is not an issue. Thanks.

But could I cover them @Mr Chibs ? As I plan to run aco guttering along the chanel pictured to reduce ground height and divert rain water to sewer rather than accumulate in a trench. This area was also badly hit by the 2020 christmas floods, another reason for the Aco.

Thanks @sxturbo my main question is that why would there still be a cavity present between the replacement concrete floor and ground level under the house? It is only 1 course thick really. I'd just expect it to be filled in, but I am not a builder!

Thanks for the replies. @Mr Chibs would a void or cavity between the internal concrete floor and ground level still be present if concrete floors were poured later? Would this not be backfilled or concrete poured from ground level up? I would be happy to brick up the air bricks to prevent...

Thanks for the reply. All the floors are concrete but I don't think they are original. There are airbricks on the front and side of house serving this front lounge room only, but no ducting I can see going further into the the house It is a long thin, semi-detatched house with a conservatory...

Hi, I am trying to better understand the flooring in my home and hope some expert advice will clear things up. I have dug down the side of my Edwardian house that was covered with pebbles and found the air bricks way below ground level. My internal floors are concrete and means I wouldn't...