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.
Water splashing behind guttering.
Holes through the splash guard and the gutter.
A gutter apron is a bent piece of flashing that tucks up under the shingles and over the gutter.
In roof valleys rain water will travel faster especially during a heavy storm or if the gutters are already full and the water will skip over the gutter and right onto whatever or whomever is unlucky enough to be beneath it.
This video shows one of the reason why you can get water behind your gutter and some of th.
Home centers sell a gutter apron in 10 ft.
The extra thickness of the vinyl.
The gutter apron will prevent the dripping.
Capillary action is a water activity in which water adheres to a surface and follow the surface around.
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.
Have rain water dripping out from between your facia and gutters.
Water leaking in behind the facia of your roof could be caused by a couple of things.
Ever wonder why that is.
At some point in the past an owner had vinyl siding installed over old siding.
Thankfully there s a fix for this and it s called a gutter splash guard.
You can find these precut gutter splash guards about 3 in brown and white aluminum at a home center but you could easily make your own out of aluminum or sheet metal and spray paint them to match your gutters.
Are you getting water behind your gutter.
This can be frustrating and also creates a dangerous situation on porch steps during freez.
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.