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I'm debating what type of drip edge flashing to install on an existing asphalt shingle roof (the house has no flashing at all, with the expected dripping problems). There are two layers of shingles meaning the house was reroofed at some point and they left the previous roof on. The old bottom layer of shingles is curling down and shredded and damaged along the edges. (You'd think they'd act as a sort of drip edge but no such luck). The newer top layer of shingles is sticking out over the gutter as it should. The gutters are in ok shape.
I will have to either remove or push up the curled down shingle edges in order to slot the flashing between the felt and plywood. Question, should I use the type of drip edge flashing that helps support the old shingle (ie it has a lip on it that sticks out) or should I just go with a flashing that has an angle and can tuck back under the curled shingles. Or should I remove the damaged and curled edge altogether.
My concern with using a supporting flashing and leaving the old edge is that the curl of the old shingles will introduce a gap that water could run back into.
Also since it will be hard to nail the flashing in this situation, will a bead of goo between the flashing and tarpaper be sufficient sealing?
I also toyed with the idea of slotting the flashing between the two layers of shingles although I know it's not technically correct. The house will probably be getting a new roof in the next couple years anyway.
Thanks in advance for your opinions!
I will have to either remove or push up the curled down shingle edges in order to slot the flashing between the felt and plywood. Question, should I use the type of drip edge flashing that helps support the old shingle (ie it has a lip on it that sticks out) or should I just go with a flashing that has an angle and can tuck back under the curled shingles. Or should I remove the damaged and curled edge altogether.
My concern with using a supporting flashing and leaving the old edge is that the curl of the old shingles will introduce a gap that water could run back into.
Also since it will be hard to nail the flashing in this situation, will a bead of goo between the flashing and tarpaper be sufficient sealing?
I also toyed with the idea of slotting the flashing between the two layers of shingles although I know it's not technically correct. The house will probably be getting a new roof in the next couple years anyway.
Thanks in advance for your opinions!