I am thinking about a portable spa (probably a 7 footer) for my covered lanai. The concrete in my lanai drops 1 inch over 7 feet. Is that too far out of level to put the spa on?
If that is too far out of level, could I simply cover a 7 foot square area of the concrete (or a little oversized) with some heavy poly, build a little frame, pour some leveling compound or ready-mix, remove the frame, and place the spa on that? The reason for the poly would be so I could restore the lanai surface if I got rid of the spa.
Thanks.