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Question DetailsAsked on 5/19/2017

I have a 1200 square ft house with one bathroom. The galvanized pipe under my house is leaking and needs to be repl

I need a galvanized pipe replaced under my house. Sewer pipe. What would it cost. 1200sq ft with one bathroom.

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I would very strongly suspect it is actually cast iron, not galvanized steel if it is sewer as opposed to a water supply line, unless someone did some screwy DIY plumbing. [Water supply lines would normally be 3/4" or 1" pipe, 3" or 4" or occasionally larger for DWS - Drain, Waste, and Sewer pipe].


Plumbing is obviously your Search the List category. Repair cost of course depends sometimes quite a bit on accessibility (especially if crawlspace is real tight or dirty or nasty or if pipe is under concrete - worst case is if under a slab in a tight crawlspace, or embedded in a concrete structural above-grade slab). And cast iron or galvanized is a bit more expensive to repair but not dramatically so compared to plastic or (for water) copper.


A simple pinhole or connection leak repair will typically run in the $100-250 range for accessible pipe, closer to $500 plus or minus a hundred or two for pipes under a slab. Can of course run more in unusual cases, or if the pipe is so corroded or deteriorated that a long section needs to be replaced to either remove the damaged sections (if you so desire) or lesser amounts to get to a point where it is intact enough to hook into. Badly corroded old lines sometimes you have to chase 5-10 feet to get to a "good part" you can reasonably tie into without destroying it with the connection.


IF a sewer line (mroe so than water lines) you will possibly also have the option of having the damaged pipe replaced (assuming it is not just a leaking joint that can be disconnected, doped up with plumbers dope or teflon tape, and remade up), or perhaps (depending on situation) repaired with a clamp-on or fiberglass wrap-around repair - which will typically last 10-20 years as opposed to the 50 or more years for normal pipe. [The clamp-on repairs look similar to this (the one shown is actually a slip-on coupling but real similar) -


https://www.plumbingsupply.com/no-hub...


For water lines, there are similar clamp-on repairs, but usually cutting out the bad part and coupling/soldering/gluing a new piece in takes little longer and avoids the issue of counting on a clamp-on repair holding against the typically 30-70 psi in a water system versus the zero to very few psi pressure in a household sewer line.


Answered 1 year ago by LCD




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