Balsa core deck rot problem
I have been taking all the deck fittings off and re sealing the penetrations with SM Trip caulk. When I took off one of the mid deck cleats, I found quit a bit of waters and rot. My deck is a sandwich construction of Spruce, fiberglass, balsa, fiberglass, teak deck. I drilled out a 1" hole from the bottom and I can get my finger up inside where the balsa is and can feel the wet, rotten balsa for about 2" all the way around. I was told I need to get the moisture out first, then I can either fill the rotten area with West System or a product called Get Rot? All the other penetrations seem to be ok, so I don't think I have a huge problem, but want to fix this the right way. Any suggestions?