Blisters
A common problem effecting the hulls of new and older fiberglass boats. The cause and repair is well documented in the links below.
Causes
http://www.zahnisers.com/repair/blister/blister1.htm
Cure
Our way to check for blisters is by grinding down a small area.
In this case, the blisters were below the gelcoat into the fiberglass.
The customer elected to have the entire bottom "peeled".
We use the Hot Vac System to dry the hull.
