How to choose waterproofing membrane

1. Pay attention to product name and packaging mark
According to product standards, the product outer packaging should indicate the company name, product mark, production date or batch number, production license number, storage and transportation precautions. Product marking should be strictly in accordance with the standard and consistent with the product name. It must not be ambiguous or incompletely marked or without production marks. When choosing these products, users must pay attention to product markings and recognize product names, because the mark represents the identity of the product. Example: The membrane produced with polyester-cotton non-woven fabric-mesh cloth composite tire can only be named asphalt composite tire flexible waterproof membrane or composite tire membrane, but not SBS membrane, and its product marking can only be marked according to the composite tire standard.
2. Identify the quality of the coil from the base
Generally, visual inspection is performed on the cross section of the product. The specific method is to tear the selected product by hand and observe the exposed base fiber on the cross section. After the composite tire is torn, the ribs of the mesh cloth are exposed on the cross section. At this time, it can be determined that the product must be a composite tire coil. What kind of composite tire coil needs to be observed by physical property test-soluble content test. The cross section of the polyester tire and glass fiber tire coil is only exposed after the cross section is torn.
3. Strictly control the quality from the physical property
Visual inspection from the appearance can only distinguish the composite tire coil, but it cannot solve whether the selected product meets the quality requirements. This requires users to go to a technical organization with inspection capabilities to conduct physical performance inspections of factory items including soluble content according to the corresponding product standards. The soluble content item is used to control the amount of asphalt and modifier contained in the product. At the same time, it can also reveal the true appearance of the tire base used by the product, and determine whether it is consistent with the product label.
IV. Product price comparison
The competition in waterproofing membrane products is fierce and fakes are rampant. For example, the SBS modified asphalt waterproofing membrane, which is the most used in the market, has a profit margin of no more than 15%. There are many kinds of super low-priced SBS modified asphalt waterproofing membranes on the market, which have very little SBS content or even no SBS, but are replaced by waste rubber powder. Therefore, pay attention when purchasing and try to avoid products that are significantly lower than the market price.