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Old 02-02-2014, 04:57 PM   #1
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Removing old plumbing (tight spaces)


I've been replacing my old galvanized steel plumbing with PEX but have hid a roadblock in removing the old pipes so I can run the PEX through the old holes. Initially, I was using a sawzall to cut pipes, but the problem I ran into is that once I cut it on one end, I can't cut the other due to the amount of vibration since the pipe is no longer anchored. Additionally, the lines on the outer walls of the house are in too cramped a space for the blade to move. I've got a 4 1/2" grinder and diamond wheel in hopes of cutting with that. Is this the right path to go? I thought about a dualsaw, but those tend to get bad reviews, hence the grinder.
Also, once I cut both ends, how would I get the pipe out, since I've got only a few inches above the ceiling at the edge of the house. I was thinking of cutting more of the wall out and pull the pipe down and cut it into smaller chunks, but is there a better way to do this?

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Old 02-02-2014, 05:13 PM   #2
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Removing old plumbing (tight spaces)


We have no idea where you are since you did not include you location to your profile. Supply lines in an outside wall is almost never a good idea.
Why not just unscrew the lines with a pipe wrench?
I start with where the lines start, not where the lines run from.

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Old 02-02-2014, 05:19 PM   #3
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Removing old plumbing (tight spaces)


Ayuh,.... A grinder will work, but a diamond wheel is for stone, 'n tile,...

Get some Steel cuttin' wheels,...

To get the pipes out, cut 'em into smaller pieces, as small as it takes,...
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Old 02-02-2014, 06:32 PM   #4
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Removing old plumbing (tight spaces)


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Originally Posted by joecaption View Post
We have no idea where you are since you did not include you location to your profile. Supply lines in an outside wall is almost never a good idea.
Why not just unscrew the lines with a pipe wrench?
I start with where the lines start, not where the lines run from.
I'm in Texas, but the supply lines (by that I mean the ones going to the sinks, etc) have to be on the outside wall because that's where most of the sinks are. Two pairs of bathroom sinks and dishwasher lines (dishwasher also against the edge of the house). I've got others in interior wall, but those can be problematic since some are braced against studs, so I can cut the top and bottom, but the pipe is still tough to move (and I've been real conservative about cutting the walls, too).
Regarding unscrewing the pipes, they're about 35 years old, so there's just a ton of corrosion in them and not really amenable to unscrewing at this point.
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Old 02-02-2014, 06:49 PM   #5
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Removing old plumbing (tight spaces)


Just leave the old pipes in the walls. They aren't hurting anything in there. Run your new lines next to them, or where ever makes sense.
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Old 02-03-2014, 07:29 PM   #6
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Removing old plumbing (tight spaces)


Please be sure to wear goggles. Eyes are not replaceable.

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