Some of the water may leak behind the gutters down towards the soffit and the fascia.
Gutter water going behind.
If the gutter is clogged some of that water will back up on the roof soaking it.
Grab a ladder bucket heavy duty gloves and go the old fashioned route.
The other element is if the gutter is not installed behind the drip edge it creates an air gap between the top of the gutter and the bottom of the drip edge which allows a place for the water to go.
Capillary action is a water activity in which water adheres to a surface and follow the surface.
For example most ranch style homes have a 3 12 or 4 12 pitch roof.
Have rain water dripping out from between your facia and gutters.
A gutter apron is a bent piece of flashing that tucks up under the shingles and over the gutter.
Gutters are supposed to direct water away from your roof and into the ground.
Most premade drip edge flashin.
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.
This can be frustrating and also creates a dangerous situation on porch steps during freez.
Home centers sell a gutter apron in 10 ft.
Being a manufacturer of roof edgings and an installer of gutters i know first hand it s not always possible to get the gutter behind the drip.
If water is dripping behind your gutter it s probably because it was installed without any flashing over the back of the gutter.
And it doesn t stop there.
The solution begins with good flashing as this should stop leaks from rainfall and might stop the leaks from ice dams as well.
If you have a steeply pitched roof the water may be traveling so fast it splashed over.
2 install splash and mesh guards on your gutters.
Water stains dirt debris and dripping water behind a gutter are usually the result of poorly installed or missing drip edge.