APP waterproofing membrane is basically ready to use waterproof sheets that have standard thickness. Sold as BRONCO CEMSHIELD APP membranes, these are also referred as Atactic polypropylene or APP membranes, these contain premium grade visco elastic polymers, inert fillers and stabilizers that have been strengthened with polyester reinforced material with non woven construction.
Topmost part of this membrane has thin layered PF film based covering or mineral or sand protection covering. Its bottom section has covering of flammable PE film or Flam-O-Lene. For outdoor application purpose, this membrane has a natural slate flake based layer to avoid damaging effects of UV rays and also damage caused by its rough handling.