fiberglass work on a boat
 

I bought "project" boat and it neds a bit of fiberglass repair. There are some spots that need work that have jelcoat already on them. Do I need to remove all the jelcoat for the fiberglass resin to adhere or is a little sanded jelcoat ok.
If anyone has suggestions for the best brand of resin(or epoxy)to use it would be greatly appreciated.
Thanks for any help

I tried to fiberglass my boat without taking the gelcoat off... BIG MISTAKE!!! Take the time to get the gelcoat off, you will be saving yourself in the longrun!

I'd stick with a west system epoxy . . . i've used a bunch of their stuff for 5 years now and never had a problem. They have several combinations of epoxy and hardener you can use to get optimal pot life and soak through. A gallon of epoxy and a juggy of hardener are about $80 from aircraft spruce.

As much as I hate anything involving fiberglass, I have found something that helps. LIGHTLY sandblast the surface being repaired. It makes everyrthing work so much better.

Thanks for the help-- she comes out of the water next week for new engines and sanding and painting. I forcast a much lighter wallet in the near future.