Zach, Sudbury Elastomeric Sealant
claims to stick to Starboard with no need of primer or other special prep. I haven't tried it on Starboard yet but Sudbury sent me some samples of Starboard glued together with the Sudbury sealant
. The samples are very impressive.
I used the sealant when I installed some hardware
. It was nice to work with and skinned over quickly.
From the Sudbury catalog.
"Adheres tenaciously without primers to fiberglass
, glass, plastic (including Starboard), metal and wood. Simple clean up with mineral spirits. Not recommended for wooden deck
seams or use in areas subject to gasoline."