Flood Testing Before Any Tile
Twenty four hours of standing water is the only real proof that a pan holds. The flood test run at walk in shower installation lakewood ca nexusphiladelphia happens before a single tile is set, because a Lakewood shower tested after tiling can only be tested by taking it apart again.
How the Test Is Done
Plug the drain with a test plug or an inflatable bladder set below the weep holes. Fill the pan until the water is an inch below the top of the waterproofing on the walls and the curb. Mark the water line on the wall with tape and a pencil, note the time, and photograph it with the whole shower in frame.
What Counts as a Pass
The line has not moved twenty four hours later and there is nothing visible on the ceiling or in the joist bay below. Evaporation accounts for a very small drop in a warm room, which is why the mark is compared rather than eyeballed. Any measurable fall is a failure and the cause has to be found before anything covers it.
Where the Water Usually Goes
The drain connection, a corner where the reinforcing fabric was not fully bedded, a fastener driven through the membrane, or the curb ends. Look underneath with a torch while the pan is full, since a leak is far easier to trace with water standing in it than after it has been drained and the trail has dried.
Test Before the Walls Are Closed Where You Can
Being able to see the underside of the pan during the test turns a vague damp patch into an identified point. On a second floor, pull the ceiling below or use an inspection camera through an existing opening. That access is worth arranging, because a leak found now is an afternoon and a leak found later is the whole shower.
Keep the Evidence
The photographs of the marked line at the start and at the end are what a manufacturer asks for under a warranty claim, and they are what a future buyer's inspector will accept. File them with the flood test date and the waterproofing product batch, and the shower carries a record that outlives everyone who built it.