Is there any difference to gunwales for Mad River Royalex® canoes compared to fiberglass or Kevlar®?
Yes, there is. Gunwales for Royalex boats are flush sided and install in sandwich fashion with the top edge of the hull showing between the inside and outside gunwales. Gunwales for composite or laminate boats have a lip (or kerf) on the ouside gunwale that caps the hull edge and butts against the inside rail.