Static field route #804

What do I do when pressure test leak hidden behind wall?

Sealing, Leakage, Mastic & Pressure Testing.1 field-polished — seal/test detail check

A hidden pressure-test leak needs a controlled investigation: depressurize if required, mark the location, open access safely, repair, cure, and retest.

Open in Field Rescue Open category

Field checklist

Do not reach blindly into an inaccessible live test leak.
Mark the tile/grid/location where air is suspected.
Coordinate access/removal with foreman or ceiling trade.
Inspect corner, clip, gasket, access door, collar, or seam.
Repair with approved method and retest after cure.

Ask foreman

We have a suspected hidden leak at [location] during the pressure test. Do you want the system depressurized/opened for inspection before repair?

Do not

Do not keep the system pressurized while improvising access or ripping ceiling apart.

Why it matters

Mid-test leak repair needs control so the crew does not damage ceiling, miss the actual leak, or create safety/access issues.

Search words: Sealing, Leakage, Mastic & Pressure Testing pressure test leak hidden behind wall