After moving into our new house we immediately began hearing what we thought were dripping noises coming from a supposed leak. After checking the attic repeatedly, we decided that it was our plumbing, and not a leak. A plumber also ascertained that we did not have a leak in any plumbing pipes under our house, as we are built on a crawlspace foundation. The plumber believes that these noises which may last for up to four hours after turning water on, are friction noises of pipes rubbing against wood. This is the same plumber who was instructed to watch for this during the construction of our new home, and also was instructed to insulate our pipes thoroughly. The plumber now says to repair problem we will have to tear out walls in our new home!
Help! Could it be possible to try to insulate or soundproof pipes which are exposed in the crawlspace area first, before knocking out wallboard? Also, will this "knocking" decrease as the weather warms up and improves? If this is a seasonal problem, we may learn to live with it, although the noise is keeping us awake at night!!!
Thanks for your help!