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Question DetailsAsked on 10/27/2017

What is plumbing cost of replacing water pipe and removing tree root around the brick ?

The 3 water pipes go through brick and underground, the tree root runs along side the pipe causing it to squeeze the water pipe at the brick.

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Depends a lot on site specifics - especially on whether pipe replacement is needed inside the foundation (assuming that is the brick) or not - can add a couple to a number of hundreds of $ depending on whether a mason needs to come out to open up the brickwork and then repair the opening, and on whether cutting through a basement or floor slab to get to the pipe inside the foundation is necessary.


Also, depth makes a lot of difference - if in an area without annual frost penetration intot he ground (so pipes are likely 2-3 feet down) might commonly run in the $400-500 plus or minus a hundred or two range, if your pipes are 6-10 feet down, in a deep frost penetration area, your cost can quickly get more into the $1000 range.


On the tree root issue - I generally recommend intruding roots causing damge be cut back at least 3 feet from the critical point (the pipe) and that zone be treated with copper sulfate or similar long-lasting root killer, so that of course wouldincrease the excavation needed. if the tree/shrub is not wanted, then you can cut the root back just a foot or so and then immediately (while root is fresh and has not dried out) drill and pack or rag-wrap the root for a couple of feet length with kill-all vegetation killer like Roundup (glycophospate) herbicide - should kill the root and will likely damage if not kill the source plant as well. But that is not a permanent root-killer - so you still need the copper sulfate (which should not be in close contact with the piping, especially if metal) for long-term root resistance.


And of course, if the root is following the pipe trench for a long distance (as they commonly do because the loose backfill is easier growing conditions and is usually free-draining) you can sometimes get into a long stretch of root removal - or cutting down the tree (if source is obvious) and injecting the roots with herbicide from the ground surface, which usually (by removing the leaves which provide energy) usually but not always kill the roots as well.


BTW - is unusual to have more than one water pipe going through the foundation wall - you might look at, while doing the repair, cutting this back to one if feasible.


You can also find other previous questions about outdoor pipe replacement/repair costs, in the Home > Plumbing link under Browse Projects, at lower left.

Answered 1 year ago by LCD




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