fqp25 Posted August 28, 2009 Report Share Posted August 28, 2009 1950's house, I think this says Johns Manville Type B Gas Vent. What is this made of? Is it known for asbestos? Frank Click to Enlarge 39.07 KB Click to Enlarge 28.23 KB Quote Link to comment Share on other sites More sharing options...
Jim Morrison Posted August 28, 2009 Report Share Posted August 28, 2009 You betcha! Google 'transite' and read up on it some. Quote Link to comment Share on other sites More sharing options...
fqp25 Posted August 28, 2009 Author Report Share Posted August 28, 2009 After looking at the photo for while I can see "ansite" on it. Didn't see it at first. Thanks Frank Quote Link to comment Share on other sites More sharing options...
Bain Posted August 28, 2009 Report Share Posted August 28, 2009 Does anyone recommend replacement when they find these babies? I see them pretty often, and tell customers about the asbestos, but never suggest modifications are necessary since the pipes are typically encapsulated by finish materials except for in the attic. I do normally recommend adding a rain-cap above the roof, which drives everyone nuts since there aren't any--that I know of--readily available, oblong, after-market caps available. Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted August 29, 2009 Report Share Posted August 29, 2009 Does anyone recommend replacement when they find these babies? I see them pretty often, and tell customers about the asbestos, but never suggest modifications are necessary since the pipes are typically encapsulated by finish materials except for in the attic. Transite can contain up to 25% chrysotile fibers, however, I don't recommend replacement/abatement of transite gas vents or plumbing vents unless there is damage or deterioration. It's not because they are mostly concealed, but rather because there is very little risk of asbestos fiber release. Oval huh, I've never seen it in any shape other than round. Quote Link to comment Share on other sites More sharing options...
Bain Posted August 29, 2009 Report Share Posted August 29, 2009 Does anyone recommend replacement when they find these babies? I see them pretty often, and tell customers about the asbestos, but never suggest modifications are necessary since the pipes are typically encapsulated by finish materials except for in the attic. Transite can contain up to 25% chrysotile fibers, however, I don't recommend replacement/abatement of transite gas vents or plumbing vents unless there is damage or deterioration. It's not because they are mostly concealed, but rather because there is very little risk of asbestos fiber release. Oval huh, I've never seen it in any shape other than round. The ones I see are exactly like the pipe in Frank's photo, oval, and that's how they terminate above the roof line. Is there a transition piece that installers in my area never learned about? Quote Link to comment Share on other sites More sharing options...
Kyle Kubs Posted August 29, 2009 Report Share Posted August 29, 2009 There's an area here that was developed back in the 60's that used Transite for the under slab forced air ducting [:-bigeyes That one I called. Of course the homeowner threw a fit. I suggested my client have the house tested for Asbestos contamination and the ducts scoped to see if they were lined with anything or damaged, and to think about getting them sealed or lined. They weren't lined at all but there was no contamination from samples around the house. Quote Link to comment Share on other sites More sharing options...
Neal Lewis Posted August 29, 2009 Report Share Posted August 29, 2009 Kyle, is that the Cloverhill area of Flanders, where there's also the aluminum wiring? Quote Link to comment Share on other sites More sharing options...
Kyle Kubs Posted August 29, 2009 Report Share Posted August 29, 2009 I was talking specifically about a corner of Randolph Twp. but Flanders is right next door... Lots of Aluminum wiring all through this area. Quote Link to comment Share on other sites More sharing options...
timmartins Posted December 28, 2009 Report Share Posted December 28, 2009 My father worked for a Johns-Manville distributor for many years. They fabricated transite piping in many configurations. About half of the employees died of asbestosis or other asbestos related diseases. This stuff is very friable if disturbed. Quote Link to comment Share on other sites More sharing options...
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