garage floor heat

DARRYL_5

already have bubble insul down white side up seems like foil side should be up but what do i know? then metal wire sheets then tubing tied to that keeping temp constant at 60 do i need to pull the mesh and tubing towards the top of 4 to 5 inches of crete if im not playing with thermostat also do not have any interior polls or walls for thermostat thinking of floor temp monitor do they work well? do i lay a piece of empty plastic pipe on top of the tubing? if so what size and how long thanks in advance ps have outside wood burner heating staple up in house and hopefully garage soon greatest thing i ever bought