What can i do about Knocking pipes?
A couple of the people that have already answered have go the problem sort of correct. The knocking of your pipes is caused by a condition called Water Hammer. This condition is caused by air in the pipes not being alowed to get out through the fixtures in your house. In essence, it is trapped in you pipes, and the knocking is caused by the air “slamming” against your pipes when valves are closed. This is an easy fix if you have the skills. Adding a Water Hammer Arrestor Materials (1) 1/2″ Copper Tee (1) 1/2″ Water Hammer Arrestor (1) 2″ piece of 1/2″ Type L or K Copper Solder Paste (Flux) Solder Flux Brush Plumber’s Cloth or sandpaper (Medium or Fine Grit) Appropriate sized fitting brush Propane or MAPP Torch Copper Tubing Cutter Bucket Rags All can be found at any hardware store or home center Directions 1. Locate the supply pipe for the bathroom in question in the basement. They should by 1/2″ copper pipes. If the pipes are not 1/2″ in inside diameter, they are usually 3/4″ and you