We are at the framing stage of our build and have looked at the plumbing going through the framework. When the pipes pass through the frame, some of the holes that have been drilled have been filled with silicone around the pipe and other holes have not.
Is it a problem if its missing? I'm worried about knocking noises when the taps are turned on, but on the other hand the pipes are plastic wrapped (pex?) so it's likely not a problem.
Any advice would be awesome!