DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Roofing and Siding > sealing a metal roof pipe hole

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Old 07-03-2010, 03:27 PM  
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Default sealing a metal roof pipe hole

I plan on putting a few vent pipes through a metal roof and can't seem to find how to seal the hole after I put the pipe through. Is there a flange of sorts or do I just goop a bunch of caulk around the seam? Thanks.

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Old 07-03-2010, 03:37 PM  
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Bob, welcome to House Repair talk, yes there is a flashing for metal roof panels. Go to a roofing supply store and get the fitting, it is a neoprene type gasket with a metal edge that has a seal strip and you screw the flashing to the metal roof panel. Remember silicone caulk does not work well long term when caulking dissimilar materials.

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Old 07-03-2010, 11:00 PM  
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Thanks. I'll look for that.
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Old 07-11-2010, 11:13 PM  
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Default Re:

I used Sikaflex 227 to solve my leaks but I also had the roof lining out and
found that where those leaks were there was bolts holding the rear section
to the frame and they had rusted to the point they were not doing there
intended job so I replaced them and thus pulled the sections closer together
and with the sikaflex sealing it was perfect.

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