It should never be installed outside the gutter i e against the fascia board.
Fascia drip edge gutter.
Drip edge is applied on the edge of the house roof to filter out all the water from the roof system.
Drip edges are metal sheets usually shaped like an l installed at the edge of the roof.
Applied with metal and standing seam roofing an open hemmed drip edge will deter water from going upward as a result of capillary action and passing the drip edge metal.
The whole purpose is to direct the water into the gutters.
It directs all the water away from the fascia and then into the gutter.
The drip edge should be installed over a furring strip so that it tails off the fascia board.
For proper water drainage the drip edge on the rakes should always overlap the drip edge on the eaves.
Home centers sell rolls of 6 in.
The correct placement of the drip edge is the top of the roof directly between the shingles and the fascia board.
Installing drip edge on a new roof or re roofing job.
The best practice is to always install the drip edge so that it is inside the gutter.
There was no way that the gutter installe was going to get the upper edge of the gutter behind the drip edge.
It should be a minimum extension of two inch from the fascia board on the roof.
Utilized on low incline roofs l shape drip edges are situated on the roof deck and atop the fascia board.
Without a drip edge water may end up beneath the shingles and may cause damage to various parts of the home.
Please ensure that the drip edge is extended over the gutter.
Also called drip edge flashing or d metal they serve a vital function by directing water away from the fascia and into the gutter.
If this slight overhang is too short water will drip behind the gutters leading to rotted roof sheathing and fascia stained siding and even soil erosion and a flooded basement.
The lower edge of a roof should extend beyond the fascia board by about 3 4 inch so that runoff drains into the gutters.
This works out.
Some rain runoff by capillary action runs up under the shingle drip edge and down the fascia behind the gutter.