If there must be tight seams, I'd fear that the expansion and contraction of
the 3/4" teak will produce forces that the adhesive will not tolerate. The
panel will disassemble itself over a year or two. The remedy is to use thinner
stock, say 3/16". Use slow epoxy such as WEST 105/206, secure the strips
temporarily with staples and vacuum bag the whole panel.

I'd try very hard to talk the client out of tight seams. With open seams, you
can use screws between the planks for clamping and don't need to vacuum bag teh
panel. More importantly, the probability that it'll stay together is higher.
Use Teak Decking Systems goo for the seams.
There's more on the technique in the West System pamphlets and in the Gougeon
book.

Bewert wrote:

I'm working on a project in Vancouver BC in which the client wants an
exterior deck in which they want 3/4"x2 3/4" solid teak strips epoxies to 2
laminated 3/4" shts of Marine plywood. They want the joints between the
strips to be bonded with Sikyflex caulking with no seems as on a boat deck.
I was wondering if you could use regular biscuits joiners exteriorly,or
would they swell to much more than the teak & create problems as this is a
very wet climate,also what is the best epoxy?I thought the biscuits would
help keep the planks even as I can't use screws to keep them down to
set.Thanks