I want to put this on a flat roof with a burned down roof. Can I use it on this type of flat roof? How thick is the rubber backing?

You can install our Del Mar Turf Rolls on a flat rooftop. To install these turf rolls on a roof, we recommend using some double-sided tape or Velcro under the turf to hold it down. This will also make sure that you don't damage the roof and also will also you to pull it up if need be when not in use. Our Del Mar Turf Rolls don't have a rubber backing, they have an Action Back.