sealing a metal roof pipe hole

Discussion in 'Roofing and Siding' started by bobdog, Jul 3, 2010.

  1. Jul 3, 2010 #1

    bobdog

    bobdog

    bobdog

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    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.
     
  2. Jul 3, 2010 #2

    oldognewtrick

    oldognewtrick

    oldognewtrick

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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.
     
  3. Jul 4, 2010 #3

    bobdog

    bobdog

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    Thanks. I'll look for that.
     
  4. Jul 12, 2010 #4

    noah_678

    noah_678

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    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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