Vent pipe flange

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  #1  
Old 02-06-07, 09:54 PM
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Vent pipe flange

I recently had to install an additional vent pipe for a remodel that I am doing, and I am now a little unsure of how I put the flange on. I bought a plastic flashing for the 1-1/2" pipe and slid it under the upper row of shingles (asphalt). I cut the tabs to fit the profile of the standing portion, then I applied some butyl rubber under the edges of the flange. I then screwed it down with some pan head screws. What has me questioning this is that the original flanges were put under another layer of shingles so that the tabs extended almost to the bottom edge. Also, the lower edges set a bit high, especially where it dropped off the next row of shingles down. To compensate for this, I screwed it down in 5 places below where it is covered by the tabs. Do you think this will leak? I would like to know before we get any precip! I also need to put a bathroom fan exhaust in next weekend and would like to do it right the first time.

Thanks for your help.
 
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Old 02-07-07, 09:58 AM
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Flange

Seal the screw heads with roof patching cement and you should be OK.
 
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Old 02-07-07, 06:33 PM
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Thanks for your help!
 
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