Hi. New user here. Greatly appreciate the forum and any advice / help offered.
My home was built around 4 years ago. During recent extraordinarily heavy rains (with high winds) I’ve had water come down through the upstairs bathroom vent. I believe the bathroom vent uses the ridge vent to exit the house, but am not sure. Also, I have sprayed foam insulation on the roof, so the entire space is within the thermal envelope.
Attached is a picture of the relevant area. The dormer with the window is the bathroom on the third level.
The vent is in the ceiling just about 3’ from the front wall and the right wall as pictured. Near the bottom right the plumbing vent and bathroom vent for a 2d level bathroom are visible. Near the top left the plumbing vent and bathroom vent for a different 2d level bathroom are visible. If the ridge vent doesn’t allow for venting of the bathroom then I don’t know what possibly could. The inset in the top right of the picture is the view from that direction to the left (note the “different 2d level” vents). I inlcuded it so the ridge vent is visible.
So my questions are…
Any comments or advice?
Should a house with sprayed foam roof insulation even have ridge vents?
Should the bathroom vent be using the ridge vents?
Is my ridge vent the source of the water?
If so, should I be worried about ALL my ridge vents?
I think my nightmare scenario is all ridge vents are occaionally allowing water to become trapped between the spray foam and the roof.
Final question… If I need to hire someone, should I be looking for a specific expertise.
Again, many thanks for any help!!