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.
Incorrect drip edge gutter installation.
Make sure the drip edge coming from the shingle is bending against the fascia board because when it rains it s going.
Use tin snips to cut the gutter apron flashing roll in two 3 in.
One of the reasons is that your shingles may be too short.
With what you have there you d probably be better to install a strip of metal under the drip edge and over the gutter.
Water stains dirt debris and dripping water behind a gutter are usually the result of poorly installed or missing drip edge.
While on the other hand a drip edge is installed to the trim and usually hangs directly behind the back of the gutter.
There are two reasons for water getting behind the gutter.
It should never be installed outside the gutter i e against the fascia board.
The guttering should run a few inches lower than your roofline.
Most premade drip edge flashin.
The whole purpose is to direct the water into the gutters.
Gutters that are too high can enable runoff water to drip down their back side which in turn can cause deteriorating fascia boards and stains on siding.
A gutter apron is installed on the corners above roof decking.
Not an uncommon problem.
This works out correctly if you do the eaves first.
Not sure if there s a name for it but i call it drip check.
It is put under the shingles of an attic to flow water directly into the gutter.
Home centers sell rolls of 6 in.
Rain gutter installation can be a tricky job and a lot of.
On the eave side of a house such as this i install a 3 x3 piece of flashing to slide the gutter under.