Hi Glen,
It sounds like you didn't prepare the surface where you overlapped properly. You should wash, sand and wash again any epoxy you are going to epoxy over unless it is within the time that you can still get a chemical bond.

What to do? Cut where the deck and hull fibreglass meet. Peel off the overlapping strip you just created. Wash, sand and wash a 2'strip, 1" either side of the seam right around the boat. Get some tight weave 4 oz glass, cut it into 2" strips on the diagonal and expoxy in place. Feather in when hard.
It will come up fine.
JohnK

: I have just finished glassing & sanding the deck on my Storm LT & was
: getting ready to cut the cockpit after I trimmed the glass etc from the
: sheer line.
: It has been almost 6 weeks from when I first put masking tape around the
: sheer line. When I trimmed off the fibreglass & tape with a sharp
: blade there was a bit of chipping of the epoxy & it was a bit tough to
: cut through because of the time it had been there, but I succeeded
: eventually, no major hassles really.
: My main concern is that after stripping away all the tape etc, the cut edges
: delaminated in several places, it seems to be between the glass & the
: first coat of epoxy on the timber. I can delaminate these cut edges with
: my fingernail without too much trouble & I don't know how much more
: would lift if I kept pulling, I fully suspect quite a bit.
: I could ignore it & hold it all together with the glass tape when I join
: the hull & deck but I'm afraid that's just a band-aid & any sort
: of knock will cause delamination anywhere on the deck & I would then
: have to strip & re-glass the "finished" kayak.
: Is it better if I strip off all this glass back to the bare timber now &
: start again or am I panicking over nothing. I have already resigned myself
: to this task if necessary.
: I'm sure this forum is littered with similar tales of woe so I'd love to hear
: from the hundreds of years of collective experience out there as to my
: next move.

: Thank you for any advice
: Glen G.