matt_i
Well-known member
Just wanted to see if anyone has a good detail or pic(s) of the lower edge of W-valley flashing installation, on a shingled roof. Disclaimer, I'm not a roofer except right now 
searching for sage advice.
Couple of pics of what I currently have.
My debate is about what to do with the lower edge, I bent this with a flanging tool into a 90 degree "drip edge". I've seen it where the same flange is bent back almost like a hem, and then hooked over the existing drip edge. However that system would appear to push a lot of water directly down on the drip edge. My shingles and starter strips all overlay/overhang the drip edge by approx 3/4" so it makes some sense to me to also extend the W-valley out by the same amount, so it can ultimately pour into the gutter. ALso it occurs to me that the majority of the water comes right next to the center rib, so pushing the "corner" of the flashing cut out (down the centerline axis of the valley) from the building internal corner appeals to me.
I've tried typical web research for drawings and pictures, 10,000 of which show the completed valley from the peak of the ridge, several others deal with metal roofing systems, but no lower details I've found dealing with a shingled roof.
Thanks for any advice
searching for sage advice.Couple of pics of what I currently have.
My debate is about what to do with the lower edge, I bent this with a flanging tool into a 90 degree "drip edge". I've seen it where the same flange is bent back almost like a hem, and then hooked over the existing drip edge. However that system would appear to push a lot of water directly down on the drip edge. My shingles and starter strips all overlay/overhang the drip edge by approx 3/4" so it makes some sense to me to also extend the W-valley out by the same amount, so it can ultimately pour into the gutter. ALso it occurs to me that the majority of the water comes right next to the center rib, so pushing the "corner" of the flashing cut out (down the centerline axis of the valley) from the building internal corner appeals to me.
I've tried typical web research for drawings and pictures, 10,000 of which show the completed valley from the peak of the ridge, several others deal with metal roofing systems, but no lower details I've found dealing with a shingled roof.
Thanks for any advice
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