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Has the outside ground level has been built up over time? If it has, I would guess that the council has a responsibility to do something about it.
I reckon your choices are
1) lower the ground level to an appropriate height,
2) build a levee, much like you would around a ground water drain / downpipe drain, or
3) brick up the airbrick, and install a periscope air brick** In what way is the brick is not easy to chip away - too soft / hard / crumbly? Is it a solid or cavity wall (whether it is stretcher- or cross-bonded should give a good indication, particularly if you know the age of the property).
[Edit] 1) is supposed to be striked through, but apparently that's not a thing any more
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@TW thanks for the reply.
The outside ground level has been built up over time and the council own the pavement that is now there.
The property is ~1790 so its solid wall and the wall are very very thick so installing another air-brick might be a big task, although possibly the only option.
I'm going to get in touch with the council as other properties on the street have drainage channels to stop water ingress - not sure why our house wasn't done at the same time.
Has anyone had to deal with ground level air vents/bricks?
I have one of the front of my house which is right at ground level. Heavy rain today so I went out to look and there is almost definitely water ingress as the pavement is slopped towards the house front. We have a subfloor so I could take a look to see how bad it is (if at all).
Just wondering what the ideal solution to stopping water ingress but keeping the flow of air coming in.
House is very old and the brick work is not the sort you can chip away at easily to move the air brick up off the ground. The ground level is a pavement managed by the local council so I cannot dig the ground out either...