In this installment of our series on roofing problems we ll talk about incorrect overhang of shingles.
How to shingle under a close roof overhang.
Too much overhang and the shingles could blow off in high winds.
How far beyond the drip edge should an asphalt shingle extend.
Simply put this is faulty installation where the shingles extend too far over the edge of the roof or are too close to the edge.
A architect and roofing consultant harrison mccampbell responds.
Shingle manufacturers say to use a 1 4 to 3 8 inch shingle overhang over the eave where your roof ends.
We ve seen other references that suggest extending the shingles a bit more than the manufacturers suggest to compensate for wavy eaves but they do not indicate extending more than 1 inch over the eave.
99 of the time i see it cut close to flush with the metal drip edge but this latest one overhangs by nearly 1 does anyone see a problem with this both the eaves and rake were like this looks good jeff and it also helps prevent capillary action water will drip off the shingle instead of running off the fascia.
Too little overhang and the water can leak through into fascia boards.
Too much and the shingles can blow off.
Finishing shingles installation under a tight overhang we just use wetstick.
Is the amount of overhang the same at the rake as at the eave.
Most shingle manufacturers along with the asphalt roofing manufacturers association s residential asphalt roofing manual call for a 1 4 inch to 3 4 inch overhang at both rakes and eaves.