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Acodrain and DPC
Lewis 09/02/2026 - 4.33 PM
Can a Acodrain be installed directly against brickwork or does it need something like shingles between it? And can it be 50mm under DPC without causing rising damp in future
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4 Answers
Builder
Rating: 4.9 out of 5
An ACO drain can be installed directly against brickwork, but it must not bridge the DPC. Installing it only 50 mm below DPC is not recommended due to the risk of damp bridging. Best practice is to keep external drainage at least 150 mm below DPC, with correct falls away from the building.
Answered9 March 2026
1
LR handyman services
Rating: 4.9 out of 5
Hi it can be installed against brick work but keep it above DPC put a layer of stone down to allow the water to soak away then the mortar to attach the drains
It will definately cause damp if you lay it below the DPC
Hope that helps
Answered9 February 2026
0
Anonymous user
You drainage should always be below your dpc, to prevent any rising damp i would suggest leave a shingle gap in-between the acodrain and the house.
Answered9 February 2026
0
Anonymous user
Yes, it can — but only if it’s detailed properly.
What matters isn’t the plastic channel touching the brick, it’s:water management,preventing splashback,allowing the wall to breathe
Best practice options
ACO channel
10–20mm gap to wall
Filled with gravel/shingle (pea gravel or 10–20mm)
stops constant wetting of the brick
reduces algae staining
allows evaporation
gives you tolerance for slight movement
Answered9 February 2026
0