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. Too much overhang and the shingles could blow off in high winds; too little can allow water to seep into rake or fascia boards.
How much should a roof overhang the fascia?
The best installation method is to leave a gap between the drip edge and the fascia board, about the width of a finger. The shingles should also overhang the drip edge 3⁄8 to 1/2 an inch.
Should shingles overhang starter strip?
Starter shingles should always overhang the eave and rake edges of the roof by about 1/4″-3/4″ to ensure adequate rain water drainage. It is also important that the seal strip is placed facing up and close to the edge of your roof; otherwise, your roofing system won’t seal properly.
How much should a starter overhang for shingles?
Whether installed at the eave or the rake, the starter shingles should overhang the edge of the roof by ¼ inch to ¾ inch. Typically, the finish shingles are then installed to align with the edge of the starters.
How far should drip edge be from fascia?
Drip edge height: 1 5/8″ Drip edge lip extension: 1/2″ Recommended drainage gap: 1/4″ (approx) spaced off of the fascia board.
How far should eaves overhang?
Overhangs can vary from a few inches to a few feet depending on preference; however, the suggested width of an overhang is between 12” and 18” for eaves and no more than 8” for rakes. That said, overhangs can extend as far as 2′ without the need for external supports.
How do you measure a roof for shingles?
Roof surfaces are measured in “squares”. A roofing square is equal to 100 square feet of the roof. To determine the number of squares on the gable roof example in this post, divide its total of 2400 square feet by 100 (2400 ÷ 100 = 24). This means you would need 24 squares of shingles to cover that roof.
How many nails should be used per shingle?
General Guidelines for Nailing Shingles
Install the recommended number of nails per shingle. For Duration® Series shingles, Owens Corning recommends using either a 4- or 6-nail fastening pattern depending on the roof’s slope and building code requirements. In most cases, 4 nails are adequate.
Should shingles overhang drip edge?
Yes. Shingles should not extend more than 3/4” (19 mm) past the drip edge. If shingles overhang the edge of the roof by more than 3/4” (19 mm), then they are not supported and may crack and break off. In addition, the wind resistance at the roof edge may be compromised.
How far should shingles hang over gutters?
Most shingle manufacturers recommend a 1/4 to 3/8 inch overhang over your eave, which is where your roof ends by your gutter. In many cases, and particularly as home ages and settles, the roof edge at the eave edge can wave in and out by more than this amount.
How do you extend a shingles overhang?
To fix an overhang that’s too short, buy some aluminum drip edge (aka drip-cap flashing). It’s typically sold in 8-ft. lengths, and can be cut with tin snips or even poultry shears. Slide the wide, flat flange of the flashing under the first course of shingles and adjust it to extend over the gutter.
Should you remove the plastic strip on shingles?
The GAF shingle application instructions for our entire product line specifically state that that film does not need to be removed. Note: The film strips on the back of each shingle are to prevent sticking together of the shingles while in the bundle. Their removal is NOT required during application.
What is drip edge?
Drip edge is metal flashing installed at the edges of the roof to keep water away from your fascia and from getting underneath your roofing components. If your roof doesn’t have drip edge, water gets behind your gutters and rots out both your fascia board and roof decking.