I was at the Eddyline kayak store in Anacortes, WA today and saw that they are using closed cell foam for their bulkheads. I'm building a Pygmy Osprey Std and thought this would be easier to work with than the wood bulkheads.

Does anyone know where I order this type of foam? There's also a special type of glue that you use to attach it, same question about where I might order that? Lastly, has anyone done this? It just doesn't seem that it would be as watertight as a glassed wooden bulkhead.

Thanks in advance,

Brion