Two questions. 1. I own an older 75 yr plus duplex and I would like to replace the sewer line. Is there a company near Oshkosh, WI that can reline the inner of an existing functioning clay tile sewer line? (i get roots growing in line causing backups 1 or 2 times a year) 2. I own a 3 bedroom 1 story ranch home in rural oshkosh. it only has one bathroom, it has a septc tank. It has Full basement with sewer line running along basement ceiling to septic. I'm thinking to a bathroom to the bedroom closest to current bathroom. Would I need to dig a basement under the added bathroom? Maybe 10 x 12 foot addition. Or what do you suggest?