Step 9 · Test for Leaks

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

The final and most important step is to test for leaks. Use a drain plug or stuff a rag tightly into the drain opening to block it. Fill the shower base with 1-2 inches of water, enough to completely submerge the new drain flange. Use a marker or a piece of tape to mark the water level. Let it sit for at least 30 minutes, then check if the water level has dropped. If it hasn't, you have a good seal on top. Now, remove the plug and let all the water drain. If you have any way to check the area below the shower (even a small inspection mirror through a vent), do so now to check for any drips from the gasket seal below. Wait 24 hours before using the shower to allow any silicone or putty to fully cure.