Entrance and exit: The roof opening of the entrance and exit is easy to break through the coil and cause water seepage. Therefore, at the entrance and exit, use double-layer waterproof coiled material to increase the waterproof capacity.
Entrance and exit: the entrance and exit roof of the hole is easy to break through the coil caused by water seepage, so in the entrance, the use of double waterproof coil spread, to enhance waterproof capacity.
Entrance and exit: the entrance of the entrance and exit roof is easy to break the membrane and cause water seepage. Therefore, at the entrance and exit, double-layer waterproof membrane is used to pave to enhance the waterproof ability.<br>