Weifang Zhengtai Waterproof Material Co., Ltd. was established in 2001 year with the registered capital of 1 billion , covering area of 60000 square meter .
Heat-welding involves heating the membrane with a hot air welding gun until the compound starts to melt and then adhering it to the roof’s surface. APP and SBS membranes have slightly different reactions to this process. APP membranes melt at higher temperatures, giving them a more fluid consistency and making them easier to work with. SBS membranes have a lower melting point but become stickier when exposed to sufficient temperatures.
SBS membranes can be applied by heat-welding, hot-mop, cold-process adhesive, self-adhering membranes and can also be mechanically attached. APP membranes can be heat-welded or self-adhered.
These different characteristics make APP, and SBS membranes have different advantages regarding how they are used. APP membranes are used more often on smaller roofing areas because they flow more easily. SBS membranes can tolerate much lower temperatures, making them ideal for cold-weather areas. They also take less time to install and last longer.
Self-adhered membranes can be installed quickly and easily without the need for unsafe techniques such as torch application. Instead, sheets of self-adhered membranes have adhesive bottom layers that can be fixed to the roof in overlapping layers.
