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Post by Mr Stabby on Jul 7, 2018 17:52:33 GMT
Sometime this Summer I need to replace my stove flue. It is quite heavily corroded and although it doesn't seem to have rotted through yet, I don't think it will last another Winter. I may get Rose Narrowboats to do it although I'm quite happy to have a go at it myself. I haven't done one before so if anyone has, could they please announce themselves just so I can check I've got the procedure right?
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Post by pearley on Jul 7, 2018 18:49:09 GMT
Ours rotted through Spring 2017 just below the roof collar. With an inexhaustible supply of 5mm drill bits I removed most of the cement holding the flue into the collar so we could remove the broken stub. Then we just worked the pipe back and forth until if cams loose. Struck a datum on the good pipe and told the welder how long the pipe needed to be and then it was refitted. Only difference is that instead of fire cement we used high temperature silicone sealant.
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Post by Deleted on Jul 7, 2018 18:53:36 GMT
Never done it on a boat, have done on a house and it didn't seem too complicated. Fire cement was invented by the devil, now I know there is an alternative I'd always try that first.
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Post by Deleted on Jul 7, 2018 22:03:34 GMT
I've done several. Most of them came out pretty easily but one was a bastard which I had to cut off with the angel grinder below the collar (a welded-in collar father than a bolt down cast iron one). Then I used a screwdriver as a chisel between collar and remains of flue so it could be forced smaller and it dropped out. In that case the flue was a pretty close fit in the welded collar. Usually there is more play on the cast ones so its easier depending on the cement/sealant situation.
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Post by tadworth on Jul 7, 2018 23:12:21 GMT
Have it made in 1 mm stainless seamless tube, it will last forever, and radiate a ton more heat into the boat. It also doesn't soot up so fast as steel, probably due to it being hotter.
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Post by naughtyfox on Jul 8, 2018 6:48:08 GMT
I remember reading Maffi's story of how he replaced his boat flue/stove chimney. See if u can find it. Maybe on his own site maffi aardvark' into Google.
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Post by naughtyfox on Jul 8, 2018 6:53:15 GMT
Fire cement was invented by the devil, now I know there is an alternative I'd always try that first. Our silicone high-temperature sealant bubbled up but kept the seal (we think). We dug it out and filled the gap with stove cement 4 weeks ago (after 4 years) and are quite happy with it so far. Masking tape for when it's applied makes for a neat job. |
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Post by naughtyfox on Jul 8, 2018 6:57:30 GMT
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Post by Deleted on Jul 8, 2018 6:59:04 GMT
Fire cement was invented by the devil, now I know there is an alternative I'd always try that first. Our silicone high-temperature sealant bubbled up but kept the seal (we think). We dug it out and filled the gap with stove cement 4 weeks ago (after 4 years) and are quite happy with it so far. Masking tape for when it's applied makes for a neat job. I just find that you spend time doing a neat job just for it to start cracking and/or crumbling far too soon. |
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Post by naughtyfox on Jul 8, 2018 7:00:52 GMT
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Post by naughtyfox on Jul 8, 2018 7:03:38 GMT
Our silicone high-temperature sealant bubbled up but kept the seal (we think). We dug it out and filled the gap with stove cement 4 weeks ago (after 4 years) and are quite happy with it so far. Masking tape for when it's applied makes for a neat job. I just find that you spend time doing a neat job just for it to start cracking and/or crumbling far too soon. Source of quote: Donkey There's enough in the tub to last 20 years so just dig out and re-fill. Source of above comment: naughtyfox |
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Post by Deleted on Jul 8, 2018 7:24:50 GMT
"Twat"
Source: Tomsk
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Post by Jim on Jul 8, 2018 12:16:43 GMT
Stove cement? HT silicone? Nah, bung some fire rope up the gap, poke it in with a flat screwdriver.
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Post by Deleted on Jul 8, 2018 13:47:01 GMT
Exhaust lagging is pretty good too.
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Post by naughtyfox on Jul 8, 2018 13:49:02 GMT
Stove cement? HT silicone? Nah, bung some fire rope up the gap, poke it in with a flat screwdriver. And then put some stove cement on top of that. By the way Jimbo, we watched the Flag Crackers of Craven yesterday in Skipton. I liked them. |
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