I have a early 70''s boat the topside, cabin, decks, non-skid gel coat is nothing but cracks, how can I go about repairing this, can I seal the cracks and paint, or do I have to replace the gel coat
Interlux has a barrier coat ( #4000 ) that works very well for filling crazing. Then paint with 2 part paint. ( add non-skid if you like ) Call their help line.
We found that the prime coat paint for the Interthane Plus filled & covered the many cracks & crazings in our deck & cabin sides. We''ve had no recurrence in the past four seasons; the paint system holds up well and looks good.