How Shingles Overlap Gutter

Each has their own reasoning for a slightly different amount of overhang.

How shingles overlap gutter.

Shingles hang over gutter. Home centers sell rolls of 6 in. Use tin snips to cut the gutter apron flashing roll in two 3 in. This will leave room for the inside box miter.

If there s a drip edge installed where the fascia meets your shingles and the gutter is hung below the drip edge get some roll flashing and tuck it up under the drip edge and over the top of the gutter. Gutters should be hung where a straight edge laying on your roof shingles can easily extend over the front lip of the gutter this is the proper installment location for the high point of the gutter. What you need to do is to extend those roof shingles into the gutter. The drip edge flashing you depicted is called t drip style or o d e which stands for overhanging drip edge.

In my opinion the shingles should never be exactly even with the edge of any drip edge flashing. And you re lifting up the edges of those shingles at the bottom of the roof edge. My gutters have a plastic mesh cover with an aluminum rail that runs the lenght of the gutter to support the mesh. To this total length add 4 more inches to the length this is for an overlap at the interior joined seam it will make the gutter stronger in that area.

For outside corners measure from corner to corner. If you have inside corners subtract 5 inches. See overshooting gutters just below we illustrate shingles installed with too much overhang into the gutter. In almost every instance gutter installers take the path of least resistance and shove the gutter right underneath the roof shingles instead.

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. Longer overlaps of asphalt shingles past the drip edge will hang over into the gutter will send roof runoff off of the roof rather than into the gutter and will eventually crack break and look gross. The shingles appear to have been installed such that they cover almost half of the gutter. If you have a straight run gable roof measure from shingle to shingle and then add 1 2 inch to each side for a slight overlap.

When it rains hard the water running down my roof will run right past the gutter and onto the ground. So because there s not a magic potion that will do that the way to fix this is to get a flat bar and that s a very thin pry bar.