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Excavate and Install Main French Drain

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What happens here

To install the main French drain, first, remove the existing patio pavers along the affected edge. Dig a trench deep enough to accommodate the drain tile and gravel. Line the trench with filter fabric to prevent soil from clogging the drain. Place a layer of 3/4-inch clear rock (gravel) at the bottom of the trench, then lay the 4-inch perforated drain tile on top of the gravel. Cover the drain tile with more clear rock, ensuring the fabric is wrapped over the top.

Goal: Install the primary French drain system along the patio edge.

Tools and materials

  • Shovels — Digging trenches and backfilling
  • 3/4-inch clear rock — Creating permeable layers around the drain tile
  • 4-inch perforated drain tile — Collecting and channeling water
  • Filter fabric — Lining the trench to prevent clogging
  • Patio pavers — The existing patio material to be removed and potentially re-laid

What they say

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post right here tim is shooting the grade what we're going to be installing is a French drain system so we're gonna tear apart the patio we're gonna put 3/4 clear Rock in for its perforated drain tile we're gonna take it from this point to walking the path right now that's the

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