What is the difference between modified asphalt waterproofing membrane and waterproofing membrane
Jun 08, 2022
The asphalt waterproofing membrane is usually obtained by coating the base material with polymer-modified asphalt such as SBS. The purpose of adding the polymer is to improve the performance of the asphalt being sticky at high temperature and brittle at low temperature; the polymer waterproofing membrane is made of SBS, etc. The soft polymer material is obtained by extrusion compounding or coating on the base layer, which has good water resistance and good temperature adaptability.
Strong cross-membrane polymer composite self-adhesive waterproofing membrane and self-adhesive polymer-modified asphalt waterproofing material sheet as the main waterproof layer, coat a layer of rubber asphalt self-adhesive material with creep function on its upper or lower surface, and then Polymer self-adhesive waterproof membrane covered with silicon foil release film.
The polymer waterproofing membrane has a relatively high unit cost, but it has good weather resistance, long service life, convenient construction, and is easy to be made into light-colored/white products. Paving on the roof can effectively reflect sunlight, thereby avoiding excessive heating in the attic room, which is beneficial to Energy saving.
In contrast, the asphalt waterproofing membrane has poor temperature resistance, large pollution in the production process, relatively short service life, easy to be dirty during construction, and only black in color. It absorbs sunlight and heat in summer, which has a great impact on the indoor temperature of the top floor. , is not conducive to energy saving and environmental protection.
