The best sealant depends entirely on the type of pipe and the location of the leak. For threaded metal or PVC supply and drainage joints, Teflon (PTFE) tape wrapped tightly around male threads provides an effective waterproof seal. For standard PVC or ABS drain pipes, solvent cement (PVC primer and glue) creates a permanent chemical weld. For minor slip-joint connections, replacing worn rubber washers is ideal. Avoid exterior wrap sealants for permanent fixes. Verification: Run water through the repaired pipe and check with a dry paper towel to confirm zero leaks.
1 votes
Marked as accepted