If there plugged up water can get behind them and run down the soffits.
Water dripping down siding.
At some point in the past an owner had vinyl siding installed over old siding.
If you see the stepflashing drain behind the siding the paint under the butts will keep it from draining out and still if the lap is below the first stepflashing all the water will drain behind.
Check to be sure weep holes are open along bottom of window openings.
Inspect the area above the leak including both indoors and out.
How to prevent water from flowing under vinyl siding gravity and shedding water.
Water should not be allowed to run down the siding.
Since water runs downward unless it s being driven by strong winds the standard method for.
1 drip edge is caught behind the gutter.
Cover the exterior casing with aluminum or vinyl trim sheet.
The shingles should be hanging about 1 4 inch to 1 2 inch beyond the drip edge so this may be your problem.
4 the gutter is too low allowing the water access to the back of the gutter.
It can get behind the siding and cause serious problems within the walls as well as leakage in the basement or crawl space.
Use a caulking gun to apply a continuous bead of silicone sealant along the vertical seams between the vinyl.
Rainwater leaking from a gutter ends up behind siding and causes a wall to rot.
The extra thickness of the vinyl.
This can be accomplished by using a portable field brake.
J channel is a poor design if not flashed well it allows water to get in behind siding.
Vinyl siding requires special inside and outside corner units in addition to the trim that.
3 improper offset of the starter strip creating a seam that allows the water to travel behind the drip edge and fascia onto the soffit.