Filling stringers with foam. We will be raising the deck in two ways. First we are going to lay the deck on top of the inner liner ledge we left (about 2-3 inches). That makes the deck about 3/4 inch higher. We are also using 1.5 inch Plascore (like Nidacore) honeycomb for the deck.
To get the 3/4 inch raised stringers I was originally just going to put the stringers back to original height by pour foam and add a 3/4 nidacore. But Richard said screw that, lets make a dam and pour the foam the additional 3/4 inch. So we did that. You can see the thin plywood dams screwed to the sides of the stringers. To get the height of the dams right, we temporarily screwed into the ledge, ran string across them back and forth. We used that as the deck height and the top of the dams came to the strings. We took the strings down of course to work. In pouring foam, I recommend that you get plenty on hand. You want that foam to expand without voids at the top. Go ahead and waste some, it will make the top flat when you saw it, sand it, shape it. Your stringers will thank you and the glass will lay flat without voids (although some voids are okay).
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