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<font size="+1"><font face="Arial">I use accordion style rubber boots.
These are typically attached to the roofing with a bead of silicone
underneath and gasketed metal roofing screws on top. These are made for
all kinds of metal roof penetrations and I have even seen them used for
6" metalbestos stove flues. One note of caution, the orange "high
temperature" ones are (I think) rated only to 180 degrees F. so you
want to make sure the SHW fluid never exceeds this. Also in time, like
any rubber flashing on a roof the rubber will deteriorate from UV. I
build a show shed over my system's plumbing which shades it so
hopefully this will not be in issue in ~20 years.<br>
<br>
Todd<br>
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troy Harvey wrote:
<blockquote
cite="mid0756358F-634F-428D-A63F-71CD6B97AB0D@heliocentric.org"
type="cite">
<div>Any thoughts on how to flash a copper pipe roof penetration on a
metal roof. The brazed copper flashing we typically use would cause
corrosion with the steel roof I'm afraid. WHat have others used in this
situation?</div>
<br>
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<div>Troy Harvey</div>
<div>---------------------</div>
<div>Heliocentric</div>
<div>801-453-9434</div>
<div><a href="mailto:taharvey@heliocentric.org">taharvey@heliocentric.org</a></div>
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