Join Date: Nov 2007
Location: Hamburg and Wilson NY
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SD is precisely on the mark.
In cold Lake Ontario, with a 6-month season, many older boats don't have a barrier coat at all. Hand-laid hulls from the 60's don't seem to be as susceptible to blistering as those from the 70's and 80's. The colder the water, the fresher the water, the shorter the season, the less the blister risk. If you DO strip everything off, a barrier coat makes sense, as most of the job -- the labor -- is already done. Interlux 2000E is a great material for the barrier.
A good multi-season ablative, such as Micron Extra, is what we use here in Buffalo. Trinidad is a Hard paint, which requires sanding for re-coating, whereas ablatives can get by with just a good scotch-brite scuffing before touch-ups. We also have customers who swear by the [much cheaper] Blue Water ablative paints, even after a few seasons, though I believe BW only claims one season. VC is definitely a single-season job, slippery -- almost all our racers use it, BUT, as it contains Teflon, if you want to change to a different paint in the future, you must completely remove the VC-17.
Paul Van Voorhees
Certified Tohatsu TLDI Technician
Mgr, Obersheimer Sails
Buffalo, NY USA