New pipework pressure-tested before it is covered
Why — act while you have leverage
The same rule as new construction and it matters more here, because what gets covered is a room you are already living around.
What to look at
- A gauge photographed at both ends of the hold
- Every new run tested, not a sample
- Testing before boxing and tiling, not after
Documents to ask for
- Pressure test record with gauge photographs
How to check it yourself
Concealed supply lines are tested and held at pressure before any chasing is closed or boxing is built. Photograph the gauge at the start and end of the hold. Drainage is tested separately for water-tightness.
Where this comes from: NBC 2016 Part 9 (Plumbing Services); IS 2065 — code of practice for water supply in buildings (indian standard or building code)
More plumbing relocation checks
- Photograph before this is covered
- Moved drains still fall the right way