How Much Overhang For Roofing Shingles

Too much overhang and the shingles could blow off in high winds.

How much overhang for roofing shingles.

Shingles protect sloping rooftops from the effects of rain snow and hail while providing an attractive crown for the house. Position the side of hook knife against the drip edge beneath the shingle with the blade facing upward against the. Keeping a solid roofing layer of shingles is an important way to avoid water damage and. How to lay shingles.

Knowledgeable roofers will install shingles at just the right overhang for your roof type. In my opinion the shingles should never be exactly even with the edge of any drip edge flashing. 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. 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.

Too little can allow water to seep into rake or fascia boards. In my opinion the felt underlayment should also extend beyond the drip edge by 1 4 to 1 2 inch. 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.

Each has their own reasoning for a slightly different amount of overhang. 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. Here phil explains how much overhang a roof should have at the gutter. The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.

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. Anywhere from a 1 2 to a 1 overhang is acceptable as you can tell from the varying comments amongst the previous posters.