Wall Drainage Issues

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17 Apr 2021
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Hi

Our garden has a brick wall as part of a raised decking framework. We've recently discovered water pooling on the concrete floor in front of it, which seems to be slowly flowing from where the wall meets the concrete.
There are a few (what seem to be) drainage tubes above the first brick layer. I know these have had water dripping through them before, but not recently. These seem to be blocked with something hard, but nothing I've poked in has shifted it.
Without ripping everything out, I can't see what's behind the wall. My best guess is that because these tubes are blocked, water is collecting at the base of the wall, soaking into the bricks, and flowing out the other side.
Can anyone confirm my assumptions, or offer any remedy advice?
Thanks!
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MB19, good evening.

Short answer is yes the "tubes" have blocked up, probably down to silt build up.

if there was / had been a woven fabric called Geotextile installed behind the wall + free draining gravel then the degree of silting would have been reduced,

As for a fix?

A couple of possible answers?
1/. Power jet fired into the tubes?
Or.
2/. Drill in larger diameter holes in the brick wall?

Ken.
 

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