Left long enough the water runoff will cause damage to the roof shingles as well as your home s facade.
Gutter leaking behind fascia.
If the gutter is clogged some of that water will back up on the roof soaking it.
And it doesn t stop there.
1 your roof sheets have a hole in them or your screws or nails or equivalent are not watertight anymore or 2 the more common reason is where roof sheets are cut too short or they don t overhang far enough into the gutter.
As long as you don t have a wood fascia then water going behind the gutter just means it s not doing its job.
Unfortunately it doesn t always work that way.
Once the storm is over grab your.
If rushing rainwater hits a blockage while running through gutters it s going to surge up and over that blockage usually spilling over the sides of the gutter.
Water leaking in behind the facia of your roof could be caused by a couple of things.
When water drips between the fascia and the gutters the problem could be a compromised drip edge but it s also possible the gutters are overflowing.
Assuming the gutters have the correct slope the main reason for overflows is that the gutters are full of debris and need to be cleaned.
There are a few elements that come into play that cause water to run behind the gutter.
Some of the water may leak behind the gutters down towards the soffit and the fascia.
The gutter apron will prevent the dripping.
If you can see it and it s not as attractive as you like you could always get some coil stock and do the same thing.
If you re not closely attuned to the behavior of your home s water drainage system you may not notice this occurrence.
I would say that s a nice fix.
Home centers sell a gutter apron in 10 ft.
The first cause is when the roofing material is installed many roofers will not extend the roofing material past the roof edging or drip edge.
Have rain water dripping out from between your facia and gutters.
On some homes water tends to drip behind the gutters down the fascia and soffit and then either down the side of the house or straight to the ground.
If water is dripping behind your gutter it s probably because it was installed without any flashing over the back of the gutter.