Browse Forums General Discussion Re: Loud Thud/Knocking noise in drain pipe 2Aug 02, 2013 4:22 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Loud Thud/Knocking noise in drain pipe 3Aug 02, 2013 4:58 pm It sounds like your waste system may not be properly vented and air lock are forming. The Harder You Try - the Luckier You Get ! Web site http://www.anewhouse.com.au Informative, Amusing, and Opinionated Blog - Over 600 posts on all aspects of building a new house. Ain't that the truth! We used to have a tile roof and had it replaced with colorbond and suddenly everything throughout the entire house sounds louder! 4 6636 Nope, only on the inside, I've literally has my ears to the brick outside and can't hear anything. I can sort of 'reset' the noise by pressing firmly on the studs. This… 10 11693 Upgrading your windows to soundproof ones, like triple-glazed, can make a significant difference. While changing window… 4 11616 |