Does the floor have expansion joints or whatever you call them between the different segments? Or does having floor heat do away w/that?
And how did you (or did you even need to) 'grade' the slab for drainage, or is there a central drain, or? I know I will need to because it's outside.
Reason I ask, is I'd like to someday redo the shop's surrounding slab, and am obviously clueless.