Cracked Stringers

[Happi1fla]

Great information, will fill the corners/edges, and glass the entire length.
Still not certain on where to remove the glass to get inside where the foam is.
I could remove foam ,drill holes and epoxy as suggested, or could their be a thinner piece of glass that covers over the top, ( like the top to a wooden stringer,) where I could cut the top off remove old foam, glass over and refill with foam.
Would like to inspect inside where the glass comes up from the floor to see any internal cracks.
I guess what I ‘m asking are these stringers one solid box, where by cutting into the top would weaken them structurally, will plan on replacing all foam at some point
Just haven’t opened up that area yet,
I hope I’m making sense, just not enough sleep.
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