No fleece backed refers to the type of rubber roofing material. The fleece is for cushioning/reinforcement of the material not as an insulation. There is a decking out on the roof then VCL then insulation material then either another deck then roofing material or if it is roofing insulation you can walk on straight on top. I was asking which was preferable fleece backed EPDM or PVC. Thank you for your reply.