I have a crawlspace under my house. House is 6 years old
when pipes have been sitting for a while, (few hours) the pipes make a lot of noise when you open any faucet. particularly any hot water faucets. The pipes make a ticking rubbing type sound that stops after a minute or two, even if the water is still running. I will be selling the house inside of a year an a half, and I would like to stop this from happening as the noise is surprising the first time you hear it, especially in the kitchen where the ticking / rubbing comes from right under your feet.
I've been told that the noise comes from the pipes expanding as warmer water runs thru them, and the pipes are rubbing on the wood joists.
does anyone have a good fix for a problem like this? all the pipes are still accessible, thru the crawlspace, (though a little cramped) if I loosen off the hangers will that take care of the problem?
one of the real problem spots is where the hot water pipe enters the crawlspace thru the wall from the garage (where the hot water heater is) is there some type of grease or ?? that I could stick on the pipes that might work as I can't really enlarge the whole that the pipe passes thru.