Guest
as long as there are no open spaces big enough to allow the fire to get to the cloth you should be ok just walk around and smell for any strong odors or seepage on to the ground if there are none then you would be ok to proceed with your campfire as long as you take the appropriate precautions to keep the fire from spreading. also as long as the system has been installed long enough for a good sealing of the topsoil.and has allowed the grass to start to grow again you should be okay. thundrr
