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Bottom of a French drain

What do u put at the bottom of a french drain? It is in the middle of a field so will have to be underground- do you just fill the hole with stones? I've read that the top end should have a cap on it to stop it clogging.


  • PalustrisPalustris Posts: 4,297
    When  I did it I filled the trench with reasonably sized gravel and covered the gap between the pipes with porous weed suppressant material.
  • Never done it in my garden, but installed thousands of metres for work. Always line the trench with geotextile to stop fines clogging up the pea gravel.
  • Sam76Sam76 Posts: 151
    Yep i have ordered the fabric & pipe. Just not 100% sure on how to finish each end. 
  • nick615nick615 Posts: 1,478
    ?Woven plastic coal sacks if you've got any.  I used them once for a soakaway.
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