[C320-list] Butyl Tape for installing fixed portlights located in hull below the rub rail

[windswept at stx.rr.com]

I am going to replace the fixed portlights located in the hull below the rub
rail.  Has anyone used Butyl tape in this location?  I have read where butyl
tape is not recommended below the waterline, and this is above it in the
slip.  However, when sailing I have seen at least the lower portion in an
active splash zone and submerged for more than a few seconds.  Someone may
ask why I am making this replacement.  The portlights are badly crazed and
look very bad.  One of them leaks at the horizontal seams which have been
repaired more than once using techniques from this group.  They are 28 years
old and deserve to be put to rest.   

 

Larry Frank

WindSwept

1995 C320 #246