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post #1 of Old 10-23-2010 Thread Starter
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Blisters, yes another blisters thread

Hello all

Apologizes for starting up a new tread on a topic that,I am sure, has been well discussed here.

Every year when the boat gets pulled out I find approx 20 small blisters on either side of the hull, approx 1/4 to 1/2 inch in dia. 90+ percent of them are water trapped between the hull and the anti fouling paint. I pop them in the fall and let them dry out before sanding and re-painting in the spring.
If I suspect that the blistering has penetrated the glass in anyway, the blister is touched with a dremmel tool, dried out, sanded, and then filled with resin. No filler used.

Approx 10 years ago the hull was stripped of all anti fouling paint and approx 8 layers of fiberglass resin was applied, in an attempt to pre-actively seal the hull. At the time there was not an issue with blistering beyond what was described above. Done in the spring not the fall.

My question;
What causes this blisters to occur in the first place?
Am I not applying the anti fouling paint correctly?
Not prepping correctly?



Last edited by johnnyandjebus; 10-23-2010 at 06:08 PM.
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