Join Date: Jun 2000
Location: CT/ Long Island Sound
Thanked 45 Times in 44 Posts
Rep Power: 17
Using mat might help bulk up the joint and provide a physical "bump" on the inside of the hull to help keep the bulkhead in place, but I would think the cloth would be better for actually joining the two (bulkhead & hull) together. Using mat in the narrower first layers might also help to fill in the angle, making the bend softer for the subsequent wider layers of tabbing you''re applying, so that they stick better. This can also be achieved by simply using epoxy and microballoons for a fillet along the joint, though.
One thing you might want to do with the repair, which you probably didn''t have to do in building the kayak, is to wash down the cleaned and sanded area with a MEK-type solvent before applying the epoxy. Oil deposits - from crankcase to cooking - or other mystery muck could mess up the bond, and you don''t want to have to do this repair any more times than necessary. Also don''t forget you''ll need to paint over any epoxy (especially if it''s visible) to protect it from UV degradataion. Our tabbing repair was on the bilge stringers, so we didn''t bother to paint it last spring. Even under the floorboards, the epoxy is now starting to turn visibly browner.