Torch Down Base Sheet - It has a burnable polypropylene backer that melts when the proper. The base sheet for torch down roofing may be secured to the overlay board by either direct heat fusing, hot mopping or with adhesive. This is the first layer of modified bitumen membrane.
This is the first layer of modified bitumen membrane. It has a burnable polypropylene backer that melts when the proper. The base sheet for torch down roofing may be secured to the overlay board by either direct heat fusing, hot mopping or with adhesive.