How Much Overhang For Roofing Shingles

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

How much overhang for roofing shingles.

Position the side of hook knife against the drip edge beneath the shingle with the blade facing upward against the. 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. In my opinion the felt underlayment should also extend beyond the drip edge by 1 4 to 1 2 inch. Too little can allow water to seep into rake or fascia boards.

How to lay shingles. Each has their own reasoning for a slightly different amount of overhang. Since transportation is a major cost factor expect prices to vary by location. 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.

The length of the overhang itself commonly ranges from 2 to 5 inches. Too much overhang and the shingles could blow off in high winds. 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. 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. Shingles protect sloping rooftops from the effects of rain snow and hail while providing an attractive crown for the house. 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. A architect and roofing consultant harrison mccampbell responds.

The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square. 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.