jwbr
New Member
As soon as I flush my toilet a get slight knocking sound in the pipes by the shower as soon as I flush. It's not a lot, maybe 6 or 7 knocks and not loud ones. The weird thing is that it only happens as the weather has gotten colder. I don't get this in the summer! Is this just a knock issue that I could get rid of by putting an arrester on the supply line to the toilet? Why does this happen only in the colder weather?