Usually this is due to gutter fasteners rusting.
Water dripping between gutter and fascia.
Home centers sell a gutter apron in 10 ft.
This problem is common with homes that have roofs that do not have much pitch to them.
For gutters to work properly they must be properly sloped toward the downspouts and the roof must have a drip edge that clears the sides of the gutters closest to the house.
But what happens when your roof s gutters become worn out or cracked or clogged.
Any rainwater or in sparodic areas then simply misses the gutter.
Water leaking in behind the facia of your roof could be caused by a couple of things.
Unfortunately it doesn t always work that way.
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.
This then pushes the guttering out from the roof line by 9 17mm.
Over time rain gutters often start to pull away from the roof allowing water to drip over the gutter sides or between the gutters and the walls.
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.
When properly installed gutters direct roof runoff into a downspout system and safely away from the house.
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.
The gutter apron will prevent the dripping.
Water leaking between gutter and fascia when there is rain the water is expected to roll down the roof and into the gutters.
If you re not closely attuned to the behavior of your home s water drainage system you may not notice this occurrence.
For example most ranch style homes have a 3 12 or 4 12 pitch roof.
Capillary action is a water activity in which water adheres to a surface and follow the surface around.
Without looking at the roof it seems that the water is missing the guttering because perhaps the previous owners may have had new fascias overlaid onto the old.
If water is dripping behind your gutter it s probably because it was installed without any flashing over the back of the gutter.