Attached is an image of the pipe running from the second floor shower to the basement. This is an outside wall. Because I wasn't around for the construction of this house, I had the builder take pictures for me. I was lucky to get this one so that I could see how it was built.
After I take a shower, the wall starts making a thunking noise every 20 seconds or so. It goes on for a couple of hours and then slows down. This only happens in the winter and completely disappears when it gets warm out. So it must have something to do with the temperature difference between the inside and the outside. Even if it's been many hours since the shower was used, it will still occasionally make a noise.
At first I thought that it was the pipe, but I have my doubts. I've gotten up on a ladder in the basement to shake the pipe and see if I can wedge something behind it to make it stop. No matter what I do, the noise is consistent. This is only something that has been happening for the last couple of years. The house is eight years old.
The left side of the picture shows the pipe going into some kind of black thing and I have no idea what it is. That seems to be the area from which the noise originates. What the picture doesn't show is that the wall has blown in insulation.
I am just wondering what the black thing is and what the sound could be.
After I take a shower, the wall starts making a thunking noise every 20 seconds or so. It goes on for a couple of hours and then slows down. This only happens in the winter and completely disappears when it gets warm out. So it must have something to do with the temperature difference between the inside and the outside. Even if it's been many hours since the shower was used, it will still occasionally make a noise.
At first I thought that it was the pipe, but I have my doubts. I've gotten up on a ladder in the basement to shake the pipe and see if I can wedge something behind it to make it stop. No matter what I do, the noise is consistent. This is only something that has been happening for the last couple of years. The house is eight years old.
The left side of the picture shows the pipe going into some kind of black thing and I have no idea what it is. That seems to be the area from which the noise originates. What the picture doesn't show is that the wall has blown in insulation.
I am just wondering what the black thing is and what the sound could be.