Older homes tend to make more noises as they age. While many of these sounds are harmless, there are some that should be addressed. Rattling pipes, for example, may or may not be a sign of a plumbing issue. The only way to know for sure is by having them inspected by licensed Plumbing Contractors Arlington TX. If a problem is found, an experienced plumber will be able to repair them to stop the knocking. Pipes should be quiet when in use.