Oh, I missed the "approximately 70 sq.ft. concrete pad outside the lanai". I don't think the polyaspartic (or epoxy for that matter) will hold up well on that concrete pad. In the lanai (or garage) it is protected from the elements to a degree but completely outside is another story.
Are you sure it is polyaspartic they are applying and not epoxy? Who is doing the application? Price would be in line for a polyaspartic coating.
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