Ok I know I will need to post a pic to explain this but I have a ranch with a hip roof and an addition coming off the back perpendicular to the main roof.
This forms a valley on each side. The addition roof runs under the upper roof soffit. Where the upper roof soffit meets the freeze board on the house I noticed water dripping off the j channel that holds the soffit up.
The valley had a bunch of junk off the trees in it so I brushed it clean but I dent think this would matter anyway. I don’t see any nail pops or gaps in the valley shingles. It is a closed valley where the shingles overlap on one side.
Now where the valley ends and extends slightly there is a gap where the upper roof drip edge almost touches the addition roof. Could water run slightly under there and get into the soffit and follow the soffit to the freeze board and drip out ??
I made a diverter last year to stop the water from running back toward the house and im thinking I should GeoCell caulk up under the valley over hang so water cannot get behind there.
When they did the roof they ran ice and water across the valley up 6 ft and 90 pound too. Again I see NO damage to the shingles or valley and the roof is 10 yrs old Archect shingles.
I will post pics if someone tells me an easy way ,
Thanks fellas I am suer paranoid that water may get into the house.