: You shouldn't use ANYTHING with silicone in it to attach bulkheads, as
: silicone products bond weakly and leave a residue that makes it difficult
: to get anything else to bond to the same surface after the silicone
: inevitably fails. I don't know of any kayak manufacturers that use
: silicone products for bonding foam bulkheads; they use products like Lexel
: which do not contain silicone.

: Another consideration is that while you can get a strong bond with
: adhesive-sealants on the wide surface area of foam bulkheads, a wood/glass
: bulkhead has very little surface area at the edges for bonding.
: Adhesive-sealant bonding would hold the bulkhead in place, but it would
: not be able to withstand any significant pressure and certainly could not
: be used as a footrest or as a mounting platform for a foot pump.

: My suggestion is to glass it in. It's easy, it's strong and it's worth it for
: the peace of mind alone.

In response if you opt for silcon it has better elastic properties because the hull will breath in and out with heat and torque . A good marine silcon will do the job. But if you opt for resin try disposable piping bags, they load quickly plus you can cut the nozzle size to suit the job.Second little tip when you have finished your master piece and get your first big scratch , it will come use nail varnish to paint it , it comes in much smaller containers than varnish plus will a do better job.