If you have a crawl space under the home someone should go in and inspect the drainage piping for leaks. Older galvanized lines are notorious for pitting and after it is cleaned then leaking. If this is not the case your best plan of attack is to have a trade professional do a smoke test. Many referrals to doing a smoke test have been posted on this site in the past. Do a search on the site on ” smoke test ” and you will find more info.
» This message has been edited by turdchaser on 23 January 2004