How Much Overhang For Roofing Shingles

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How much overhang for roofing shingles.

Too much overhang and the shingles could blow off in high winds. The edge of the shingles should hang over the edge of the 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 and in most cases it should be. 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. A architect and roofing consultant harrison mccampbell responds.

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. Here phil explains how much overhang a roof should have at the gutter. Position the side of hook knife against the drip edge beneath the shingle with the blade facing upward against the. Knowledgeable roofers will install shingles at just the right overhang for your roof type.

After each shingle line has been laid one shingle will overhang the rake edge. Too little can allow water to seep into rake or fascia boards. In my opinion the shingles should never be exactly even with the edge of any drip edge flashing. You may find other styles and sizes of drip edges in the store including j channel drip edges but these are intended for windows doors and other applications.

Each has their own reasoning for a slightly different amount of overhang. How to lay shingles. Asphalt shingles range in price from about 25 per bundle for a standard 3 tab style to around 50 75 or more for an upgraded architectural style. Keeping a solid roofing layer of shingles is an important way to avoid water damage and.

The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square. Anywhere from a 1 2 to a 1 overhang is acceptable as you can tell from the varying comments amongst the previous posters.