Can this turf be used on a roof deck? If so, is fill required, or can you use subfloor tiles and lay the turf over?

Yes, the Daytona Turf Rolls can be used on a roof deck. You may want to use this turf along with our Flo Through turf subfloor. Easy to install, this foam pad will not only help to move water off your roof but will also add extra comfort underfoot. We recommend using double-sided tape or glue to keep the turf in place.