How do I check a new waste line for leaks ?

Run water through it and check the joint5s. Good luck, Tom

I cut a 4" dia hole in new finished floor. put in a PVC closet flange, fits nice but the thickness of the ring ( about 1/4 " ) is above the floor shouldn't the top of the flange be level with floor??

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Originally Posted by jaytea4

I cut a 4" dia hole in new finished floor. put in a PVC closet flange, fits nice but the thickness of the ring ( about 1/4 " ) is above the floor shouldn't the top of the flange be level with floor ???

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No, the flange need not be flush with the floor. The bowl design makes allowances for this. Also, when we test our drainage prier to inspection we fill the stacks for a static test, not a pressure test. As I've stated, we run and fill the line with water and check the joints for leaks. Regards, Tom