I’m building a gabled addition onto my house (intersecting gables). I have landed my rafters directly on the existing roofing to maintain some degree of weathertightness and because the existing roof is sheathed with 1″ thick boards (old farmhouse).
What is the best way for me to transition the new fiberglass shingles into the existing fiberglass shingles in the valleys?
Can I simply weave them in without any additional flashing in the valleys?
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Replies
"Can I simply weave them in without any additional flashing in the valleys?"
I would say no.
I've never done a weave and there are not too many people here who like weaves, but you do need to put something under the weave.
Ice and water shield is a common choice, maybe some metal.
Remember, no nails within six inches of the middle of the valley.
Rich Beckman
Another day, another tool.
Not sure why you have not gotten many replies.
You need to break back the old far enough to lay something in the valley like ice shield or fill in your choice of materials.
I've done a weave as well as open valleys.
I think a weave looks nice but needs to be done correctly to last. You can do a cut also, or an open.
Not hard to do any of them, but real easy to make a big mess out of.
My advice to you would be to hire a trusted, competent roofer to do this for you if you have even the slightest trepidations about doing it yourself.
EricI Love A Hand That Meets My Own,
With A Hold That Causes Some Sensation.
[email protected]
"Can I simply weave them in without any additional flashing in the valleys?"
I would disagree with that, however, I would not gaurantee it for much more than ten years with a 3 tab.
I believe that a weave done right is bullet proof. How can it fail? You have double coverage.
The reason it is not done often is that it requires building up the adjacent roofs in succession. Probably not something most production roofers are willing to do.
Just wanna climb up this piece, then do the next.
EricI Love A Hand That Meets My Own,
With A Hold That Causes Some Sensation.
[email protected]