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Author Topic:   BLISTERS ABOVE WATERLINE

WHALERBOY 14 posted 08-08-2003 10:53 PM ET (US)
I have little blisters on the side of my 15 striper. They are above the waterline. How do you get rid of them and how did they get there? Any info would be helpfull.
thanks,
whalerboy 14
Tight lines & happy whalin
doobee posted 08-09-2003 10:56 AM ET (US)
A little more description of the blisters would help me pinpoint it. Where are they? What is the size and shape of the affected area?
Above the waterline, blisters are caused by improper curing of the resin, or improper wetting of the fiberglass during layup.
Resin blisters are repaired like osmotic blisters. Pop them, dig out the gooey part, fill with epoxy filler, and refinish. If the blisters are caused by uncured resin, more may appear after you do the repair. Resin blisters will usually cover a larger area than air blisters and may appear in a wavey pattern because of the way it is sprayed into the mold.
Air blisters are repaired the same way, but you can use gelcoat paste to fill the voids. Once you rapair an air blister it should be permanent. Air blisters usually occur in chines, strakes, or in a radius, where overwetting can cause the fibers to be squeezed out, making the skin to thin.

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Author	Topic: BLISTERS ABOVE WATERLINE
WHALERBOY 14	posted 08-08-2003 10:53 PM ET (US) I have little blisters on the side of my 15 striper. They are above the waterline. How do you get rid of them and how did they get there? Any info would be helpfull. thanks, whalerboy 14 Tight lines & happy whalin
doobee	posted 08-09-2003 10:56 AM ET (US) A little more description of the blisters would help me pinpoint it. Where are they? What is the size and shape of the affected area? Above the waterline, blisters are caused by improper curing of the resin, or improper wetting of the fiberglass during layup. Resin blisters are repaired like osmotic blisters. Pop them, dig out the gooey part, fill with epoxy filler, and refinish. If the blisters are caused by uncured resin, more may appear after you do the repair. Resin blisters will usually cover a larger area than air blisters and may appear in a wavey pattern because of the way it is sprayed into the mold. Air blisters are repaired the same way, but you can use gelcoat paste to fill the voids. Once you rapair an air blister it should be permanent. Air blisters usually occur in chines, strakes, or in a radius, where overwetting can cause the fibers to be squeezed out, making the skin to thin.