The appearance characteristics of waterproofing membranes mainly include the following aspects:
Surface flatness: The surface of high-quality waterproofing membranes should be flat and smooth, without obvious unevenness or impurities. If the surface is bumpy or has a lot of unevenness, it may affect the waterproofing effect and cause problems such as water accumulation and leakage.
Thickness uniformity: Regular and good membranes have uniform thickness and meet the corresponding specifications specified by national standards. The thickness of the membrane can be measured with a caliper. If the thickness is uneven, it may be a hidden danger of quality problems.
Color and gloss: The cross-section of qualified modified asphalt waterproofing membranes should have a glossy luster and a delicate and solid appearance. White, gray and spongy porous structures are all unimpregnated bases, which will cause subsequent water leakage.
Base material: The base of high-quality SBS membranes is usually polyester felt or glass fiber felt, which is uniform and thick, with clearly visible fibers and a certain toughness. The base of inferior membranes may be rough, loose, or even have impurities.
Smell: Qualified modified asphalt waterproofing membranes should be odorless products, without obvious bad or irritating odors. Inferior materials often add a lot of waste oil, recycled rubber powder, etc., which causes the membrane to have obvious odor.
Through the observation and testing of the above aspects, the quality of the waterproofing membrane can be preliminarily judged. Choosing high-quality waterproofing membranes is crucial to ensure the waterproof effect of the building.
