Relocating plumbing under an existing slab

Moving an under-slab drain affects slope, slab, fill, soil-gas/radon membrane, future access and concrete restoration.

Decision triage

VERT / GREEN · JAUNE / YELLOW · ROUGE / RED

Exact pipe route unknown Structural/post-tensioned slab or unknown type Under-slab/radon membrane will be disturbed Slope, backfill and restoration defined

What the professional checks

The professional checks routing, drainage slope/venting, slab type, excavation/backfill, under-slab membrane, radon and concrete restoration.

Official sources

Sources checked: 2026-08-24

Related path

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