Capillary action is a water activity in which water adheres to a surface and follow the surface around.
Drip edge installed behind gutter.
It is put under the shingles of an attic to flow water directly into the gutter.
There s two things happening making this necessary gravity which makes water flow down into the gutters over the drip edge into the trough and capillary action that draws water back under the drip edge.
When it rains the water from the roof goes to the edge of the shingles and when the water backflows it hits the drip edge.
The drip edge further diverts it into the gutter.
Posted by everything gutter on sep 15 2015 in downspouts gutter cleaning gutter guards gutter repair gutter sagging ice dams leaky joints leaky seams new gutters seamless gutters seamless rain gutters comments off on does the gutter go under over or behind a drip edge.
A gutter apron is used where shingles are not far enough from the edge of the gutter.
When the roof shingles do not extend past the metal drip edge the water will suck back on the metal drip edge this is called capillary action and run behind your gutters.
Therefore when the water goes over the edge of your roof it will stay attracted to the surface of the drip edge and run behind the gutter.
Its main purpose is to eliminate the water from going behind the gutter.
To correct this mistake the drip edge should be pulled forward by 1 2.
If the gutter is lower than the bottom edge of the drip edge install flashing behind the drip edge and over the back edge of the gutter to remove the gap.
But installed this way is going to result in surface tension water running down the face of the fascia board and behind the gutter.
Many of the solid gutter covers are design to take advantage of this water characteristic.
The drip edge goes behind the gutter.
If spaced properly the drip edge would still provide some protection despite the gutter issue.
The edge should be mounted running beneath the starter shingles extending a half an inch into the gutter.
Does the gutter go under over or behind a drip edge.
If the overlap is too short fix it by placing drip edge under the first row of roof shingles and be sure that the exterior edge is reaching over the gutter.
Drip edge is an essential part of the roof system.