Hello,
I removed the starboard cabin portlight on my Bav 47 because the polycarbonate sheet was loose in its frame (eg = leaking). That is an easy fix. However I'm curious over what I discovered on the stainless sealing surface of the window (image attached). There seem to be three sealants on the cabin-window frame interface: a black sealant on the outer rim, a PU foam(!) lining and finally some white sealant. However when looking at Rutgerson official mounting instructions all I can see is some good'ol Sikaflex applied to the bare stainless frame, no PU foam.
Does anybody know about this foam piece? Is it for ... trapping condensation or something? To catch condensation drops from falling in between the interior ply and the foam core? Simply a botched up job by a previous owner? My present plan is to simply remove all gasket remnants and simply go with a white Sikaflex per official instruction. Thanks!
