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Has anyone ever lined a Yankee gutter system with TPO? Was going to pull first layer of shingles off, start TPO and line gutters, then end with a termination bar. I am a fan of spray on, but I don't think I can get it think enough without problems
 

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A spray coating would be the last thing I use in a built in gutter.

TPO will work fine, I'd pull off way more then the first course of shingles though, I'd run the TPO at least 1 foot up. Water stop under and felt over to the bottom, run it though the gutter and up over the edge finish it off with a nice coping metal. Term bar would look like junk if you ask me.

Ideally wrap it in S/A Base sheet and cover in copper, solder the joints. Then step back and enjoy all the compliments on your work and not worry about it for 50 years.
 

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A spray coating would be the last thing I use in a built in gutter.

TPO will work fine, I'd pull off way more then the first course of shingles though, I'd run the TPO at least 1 foot up. Water stop under and felt over to the bottom, run it though the gutter and up over the edge finish it off with a nice coping metal. Term bar would look like junk if you ask me.

Ideally wrap it in S/A Base sheet and cover in copper, solder the joints. Then step back and enjoy all the compliments on your work and not worry about it for 50 years.
I've never seen a TPO or EPDM gutter line job last more than a few years. They may be out there and I'm not getting called, but I've seen lots of messes.

Go with copper and PRE-TIN the joints before soldering.
 

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Done right and it can last a good long time. Not copper long but pretty long. Do it wrong and well you know the out come.
 
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