How To Shingle Under A Close Roof Overhang

A architect and roofing consultant harrison mccampbell responds.

How to shingle under a close roof overhang.

Too much and the shingles can blow off. Too much overhang and the shingles could blow off in high winds. 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. In this installment of our series on roofing problems we ll talk about incorrect overhang of shingles.

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. Too little overhang and the water can leak through into fascia boards. 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. Finishing shingles installation under a tight overhang we just use wetstick.

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. The edge of the shingles should hang over a roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed. How far beyond the drip edge should an asphalt shingle extend. Shingle manufacturers say to use a 1 4 to 3 8 inch shingle overhang over the eave where your roof ends.