Ken Meyer Posted November 29, 2007 Report Share Posted November 29, 2007 The 4" cast iron vent runs horizontally through the attic for a few feet from the bathroom before turning 90 degrees and going through the roof. There is a crack in the horizontal run. Since this is not carrying liquid, is there a way to patch it? Cutting out and replacing the section would involve having to resupport the vertical run of the pipe as it up through the roof. Image Insert: 434.28 KB Quote Link to comment Share on other sites More sharing options...
hausdok Posted November 29, 2007 Report Share Posted November 29, 2007 I'm thinking a die grinder and some J.B. Weld but I'm betting that's not what the plumbing gurus are going to say. OT - OF!!! M. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted November 29, 2007 Report Share Posted November 29, 2007 Originally posted by Ken Meyer The 4" cast iron vent runs horizontally through the attic for a few feet from the bathroom before turning 90 degrees and going through the roof. There is a crack in the horizontal run. Since this is not carrying liquid, is there a way to patch it? Cutting out and replacing the section would involve having to resupport the vertical run of the pipe as it up through the roof. Why not just cut out and toss the whole mess from point where it enters the attic? Transition to ABS & be done with it. - Jim Katen, Oregon Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted November 29, 2007 Report Share Posted November 29, 2007 That crack is probably from the top of the pipe being reduced in thickness by acidic vapor. The top of all horizontal sections are likely ready to fail. Patching won't buy much time. I see much of that type of cracking patched by Bubba with roofing cement. Quote Link to comment Share on other sites More sharing options...
kurt Posted November 29, 2007 Report Share Posted November 29, 2007 There is no such thing as an effective plumbing patch. Even the idea of patching goes against plumbing canon. Get to plastic, and it's tinkertoys. Quote Link to comment Share on other sites More sharing options...
Ken Meyer Posted November 29, 2007 Author Report Share Posted November 29, 2007 Originally posted by Jim Katen Originally posted by Ken Meyer The 4" cast iron vent runs horizontally through the attic for a few feet from the bathroom before turning 90 degrees and going through the roof. There is a crack in the horizontal run. Since this is not carrying liquid, is there a way to patch it? Cutting out and replacing the section would involve having to resupport the vertical run of the pipe as it up through the roof. Why not just cut out and toss the whole mess from point where it enters the attic? Transition to ABS & be done with it. - Jim Katen, Oregon That is the simplest and most sound approach, I should have thought of it. Quote Link to comment Share on other sites More sharing options...
Scottpat Posted November 29, 2007 Report Share Posted November 29, 2007 What Bill said! Just think about all of the other cast iron pipe in the house that you can't see and its condition. Quote Link to comment Share on other sites More sharing options...
msteger Posted December 18, 2007 Report Share Posted December 18, 2007 When did they stop using cast iron pipes for sewer connections? Early 1970s? Quote Link to comment Share on other sites More sharing options...
Brandon Whitmore Posted December 20, 2007 Report Share Posted December 20, 2007 There is a crack in the horizontal run. Since this is not carrying liquid, is there a way to patch it? Cutting out and replacing the section would involve having to resupport the vertical run of the pipe as it up through the roof I may be getting a little picky, but I say that the pipe is designed to carry water (rain water). If the pipe is in that bad of shape where visible, who's to say there aren't other spots hidden spots that are deteriorated? I agree with the majority-- pipe should be replaced Quote Link to comment Share on other sites More sharing options...
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