Plastic steel doors and windows and aluminum alloy doors and windows with what materials to fill, why?
Polyurethane foaming agent! The reason is that he is more cost-effective, save time, do not labor, time-consuming! After filling the filler, you can fill the cement, do not have that thing, you will use a lot of cement, still very troublesome!
After the installation of doors and windows should be filled with two foaming agent can play two roles 1 waterproof 2 shock (the main or shock friends because of a long time the foam will aging into a powder) the general project is foam again after the cement Cement and the external walls of paint and then hit a good weathering glue if you are a private decoration, then make a plastic after the bubble (glass glue can also be friends) can be the premise that the gap is not a big case of private and engineering Compared to the project after all, it is a hundred years
