BTTT, for a few more questions. Been searching all I can on stringer repairs, and getting some conflicting thoughts and ways of doing it.
I see some people stand firmly by "marine grade" wood only, and some say regular wood that's layed up and saturated with 'glass. Saw another post on the internet about using pressure treated, to prevent future rot, and also redwood, which is a natural (for the most part) rot proof wood, layed up in 'glass.
Next is the way of attaching the stringer to the hull. Thick consistency of resin and cabosil, subfloor construction adhesive (NOT sold on that one!!), or marine grade adhesive? I kinda like the marine adhesive, as I've heard that it is almost impossible to separate the items after they are attached, it's waterproof, flexible, and once the stringer is 'glassed in and marine adhered, it seems like it is a permanent repair. Seems like the cabbed, resin will set up solid and hard and like has already happened, it could crack/separate after some use since there is little flex?
Thoughts, experiences??!
They way i lay up all my stringers is first start with kiln dryed 1X4 or 2X4, i use dougless fur or a hardwood of some kind. Make a Jig to hold the stringers and lay them down on a layer or 2 of 3oz cloth and apply as much weight as you can down on them.
After its cured, i lay down cabosil along the bottom of the stringer and the floor to make a nice curved transition. Fiberglass doesn't like to lay down at a 90 degree angle.
I layup stringers with anywhere from 18 to 24 oz of glass. so it's up to you how you want to go about that. i use alternating layers of 10 oz mat and 3 oz cloth till i get what iam looking for. hope this helps
Check out my stringer redo here
http://www.socaljetboats.com/projects/southwind-tunnel-project-continued/msg197195/#msg197195