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I have experience installing asphalt shingle roofs, where the drip edge is installed first, then roofing felt, then rake edge, and finally shingles.
Now, I'm planning a standing seam metal roof installation on my home, the first I'll have done. I've turned to Youtube videos, internet forums (like this one) and manufacturer how-to guides. I keep seeing a difference in how drip edge is installed for metal roofs: I keep seeing the drip edge being installed over the felt. With asphalt the felt is installed over the felt, so if water ends up flowing under the shingles, it will flow over the drip edge and off the roof.
Question: wouldn't installing the drip edge over the felt for metal roofs, cause any condensation (between backside of metal roof and topside of felt) to flow under the drip edge and possible damage the backside of wood fascia board or rafter tails or subfascia?
Thanks in advance,
G
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you are right, proper installation is gutter apron under the felt so all the moisture can go into the gutter, metal does condensate. I am a gutter and metal roofing installer and the gutter gets blamed for improper roof installation
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I also wonder about the bottom edge (at the eve) of the standing seam metal roof panels. One method for finishing the eve off, which I like, is to bend a 3/4"-1" hem that wraps around the drip edge. The pictures I've seen of this detail look sharp.
I question, though, how effectively does the condensation (between the backside of the panel and topside of the felt) get out the bottom?
3/28/2010
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Or copy this URL: https://www.metalroofing.com/spirit/comment/14603/find/3/28/2010
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