What is the meaning of "channel" and "layer" in the practice of polymer waterproofing membrane?
In addition, the two did not meet the required thickness of the waterproof layer, according to certain requirements for laminated composite, two waterproof layer can be considered a waterproof. Such as 1.2mm polyurethane + 1.2mm self-adhesive coil (laminated construction rather than separate), can be used as a waterproof, although with two kinds of materials to do a two-story waterproof, and can not be considered two waterproof. The thickness of the laminated composite waterproofing layer can be thinned, and its provisions may be reflected in the new "roofing engineering technical specification" to be published.
such as:
Roof specification, 4mmSBS in a class Ⅲ waterproof for a, and 3mmSBS coil for Ⅲ grade roof waterproof, although a layer of waterproof, but did not meet the specifications, not a waterproof. In the Ⅱ level (two waterproof) Ⅰ (three waterproof) waterproof, SBS is one of the layer, the thickness requirements for the 3mm, so 3mmSBS coil in the Ⅱ grade Ⅰ waterproof as a waterproof.
Corresponding material thickness in line with the requirements of a layer of waterproof water called a waterproof.
