Our sunroom is ~200 sq ft [11 x 17] and slopes 1 3/4" over 11 ft. (Oh yes the foundation had issues 10+ years ago hence the slope, the previous owners had 8 piers put in and I had the same company come look at it again and nothing has moved since then so I feel comfortable fixing it). Looking @ LevelQuik RS 50 lb. Rapid-Setting Self-Leveling Underlayment it says it can be poured up to 1" thick. Obviously that will not be enough. Trying to figure out how to best level the floor so we can lay tile on top. Thought about doing two layers but not sure if the levelquik has to have a minimum thickness. Anyways, I have done a bunch of stuff but concrete is not one of them so would love to have some advice on what would be the best route of getting this room level. Thanks in advance.