Expert: Daryl Tetzloff - 3/24/2007

Question
I had a rotten transom so what I did was I cut the top off of the
transom and pulled out most of the rotten wood.  So now my transom is
basically hollowed out (just the fiberglass skin).  I have heard that
seacast pourable transom is good for this, but only if you have gotten
ALL of the wood out (since it's polyester resin and doesn't bond to
wood well).  Here is what I'm considering:  mixing thin epoxy resin
(such as 635 from http://www.uscomposites.com/epoxy.html) with 1/2"
chopped fiberglass filler and pouring that slurry into the transom
cavity.  Seems like this should be even better than the Seacast since
it's epoxy as opposed to polyester.  Do you think this will this work?
I appreciate your insight.

Answer
Mike,Honestly I have never tried the seacast products. When replacing the transom we always cut out the fiberglass in the engine area. (not the outside of the boat) We then replaced the wood and fiberglassed over the new wood. Then we would use a paint called bilgecote to go over the new fiberglass and seal it. Sorry I can't be more help. Daryl