RV Repair: osmotic blisters on outside wall of 2002 RV, gelcoat repair kit, winnebago adventurer

Question
I have a 2002 Winnebago Adventurer that has developed many tiny blisters  (approx 1/4") at 4 locations on the outside skin material. These are smooth panels that have an outside with a thin gelcoat surface. This surface gets moisture penitrating thru it and then heat blisters the surface off to exspose the underlying fiberglass.
   These outside walls are laminated with inside finishad surface fastened to an insulation panel with a thin layer of plywoow outside that is covered with a fiberglassed panel coated with gelcoat.
   Could I find thin ( 1/16" - 1/8") fiberglass sheets that I could cut to size and cement on with 3M 1500 adhesive and paint.
   Any  suggestions will help?  Thanks!

Answer
go to a boat part store.  they will have repair kits for boat hulls.  these kits repel a lot of moisture and the finish that you get from a gelcoat repair kit is smooth and matches the color of the rv closely.  may find the materials here are cheaper than camper store.