Re: Liquid nails for bedding bulkheads to fiberglass?
It doesn't really matter what it used to space the stringer off the hull and the strength of what's used never actually comes into play either. All you're trying to do is space the plywood off the hull to eliminate hard spots, that's why it can be done with just soft spacers, foam, adhesive, putty, or just an air gap.
The strength of the bond will never be used because the adhesives are flexible and the glass laminate isn't in comparison. This means the laminate will be taking the load and the only time the adhesive would come into play is if the laminate failed.
In the production of small boats there are many companies that still use nothing between the stringers and hull, they're just set in place and glassed around.
