Join Date: Sep 2006
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Whatever you do, never, never, never let them fasten the new deck through the top layer of glass, no matter what they say about how good the sealeant is long term.
The new deck will either have to be glued down.... in which case it will have to be thinner than a fastened deck.... or the existing deck will have to be thickened so the fasteners do not penetrate it.
I speak from bitter experience.