Looks like it's coming from three separate places... 1. from the front of the van, probably the scuttle drains bunged up with leaves, 2. a missing rubber bung in the floor pan behind the passenger seat, 3. from the direction of the sliding door into the top right hand corner of the "footwell" behind the passenger seat, assuming this is maybe from a roof rail fixing point.
It's mad because the carpet didn't look or feel wet, no mould, no smell. Only thing I did used to notice was the inside of the windscreen would be foggy/damp in the mornings regardless of the weather outside.
So I've a bit of remedial work to do before I can get on with my sound proofing...




