Garage floor not level

[cspin]

My garage sim is pretty close to being done after a just a "few" revisions. I am working on the flooring and have putting turf (1/2" turf with 5 mm foam backing) rolled out over 1/2" thick foam interlocking tiles. I always knew there was a slope to the concrete floor from the back of the garage (where screen is at) to the front (where the door is). I hit from about 10 feet from the screen. What I recently discovered is that the slope is not uniform, and there is a 1/2" to 3/4" drop in 4 feet in the area where I hit from (right foot lower than left foot = uphill lie). Trying to figure out a way to level the concrete floor in the area where my hitting mat is going to be recessed into the putting turf. Was thinking about using leveling compound but that becomes permanent. Shimming won't work because my hitting mat is the typical 1/2" turf bonded to 5/8" black flexible foam.

Any suggestions?

Thx!

cspin


P.S. I have a GC2 which is supposed to be self-leveling so not too concerned about that.

[DistinAZ]

I think self leveling compound would be easiest. But if you don't want it permanent could you build up the low area with a section of 1/2 or 3/4" plywood/OSB and then "feather" in some tapered rigid foam.
You can cut and grind on the foam to make the transition, but it's messy.

[cspin]

Good idea DistinAZ. Was thinking of something like that but more along the lines of ripping 2x4's to match the slope, essentiallly creating a low profile frame. The frame could be glued to concrete floor. Then fill it in with rigid foam board and cut/grind it to the slope. Or possibly just fill it with paver sand. Could then put a thin sheet of wood or paneling on top to keep things in place and add some rigidity.

Or, do nothing and just have a swing that works for uphill lies!

[DistinAZ]

I like the frame idea as long as you don't mind losing the height. Would be easier, could even just shim them to level vs ripping them depending on how wavy the floor is.

[cspin]

The wooden frame would be max 1" high at the back (toward garage door), and then taper down to 0" at the floor in front (toward screen). So, would essentially be a low profile wedge shaped frame to make the stance and hitting area level. Then, fill the frame area in with something like foam or sand, and put a ply of something thin on top of it. The frame would have 3 sides (a back and two sides), and likely a strip in the middle. I may not be describing this very well. It is basically a low profile ramp like structure that could be removed (i.e. not permanent like leveling compound).