attic

Hello, I added a shower stall and an additional toilet to bathroom. The current bath has two sink vanities, they are about 16’ away from each other, one sink is drained to a 2” wet vent (to the roof) that provides the venting for the first (original) toilet 3” line. The other sink has a 1.5”...

Hi Everyone, We are in a 2 year old house. Every time the water heater turns on we hear loud knockings sound in the attic. We were able to find the pipe causing it - It's the flue pipe coming out of the water heater on the 1st floor and going upto the attic and having the exhaust out. The pipe...