More evidence of moisture in the soffits Here's some staining and discoloration on the underside of the porch roof in the soffit area - you can see the topside of the porch ceiling at the bottom of the picture). Now we do get some snow that slides off the copper roof and into this gutter - I suppose this could just be moisture from that wicking up? Like I said, we've never had any overflow or other noticable gutter problems here.