My factory tank had neoprene strips under. I wouldn't use Starboard, too stiff and difficult to bond. Neoprene stuck to the tank with DAP Weldwood (red can) contact cement is what my tank builder used and recommends. Some rubber will react and cause corrosion to the aluminum but neoprene is fine. In a dry (free draining) environment the aluminum will oxidize and protect itself pretty well. My tank was stamped 1974 and in great shape, I just wanted to go bigger. I know the subject is controversial but you really only need to barrier coat the aluminum if foamed in or water is trapped next to it.
Last edited by Normagain; 01-24-2013 at 02:09 AM.
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