The most commonly used waterproofing material for roofs nowadays is asphalt waterproofing membrane, which has obvious waterproofing effect and is relatively affordable, so it has been favored by many people. However, many people are unaware that due to climate reasons, the types of waterproofing membranes used in the south and north are different.

Modified asphalt waterproofing membranes are divided into two types: SBS and APP, but many people do not know how to distinguish between these two types of waterproofing membranes. Today, the editor will discuss this issue with everyone.

SBS waterproofing membrane, also known as elastic modified asphalt waterproofing membrane, is a waterproofing membrane made of styrene butadiene (SBS) thermoplastic elastomer as an asphalt modifier and double-sided covering isolation material. It is commonly used for waterproofing the outer layer of building roofs or external waterproofing of underground parking lots.

SBS waterproofing membrane, especially between minus 25 degrees Celsius and over 100 degrees Celsius, has excellent fatigue resistance and crack resistance, making it more suitable for use in the north.

The full name of APP waterproofing membrane is plastic modified asphalt waterproofing membrane, which uses organic polymers such as random polypropylene or polyolefin polymers as modifiers for asphalt, and is a double-sided insulation covered waterproofing membrane. It is different from SBS waterproofing membrane.

APP waterproofing membrane is stronger than other membranes in terms of UV resistance. Its softening point is above 150 degrees Celsius at high temperatures, and its natural point is 265 degrees Celsius. Its high temperature resistance is very strong, so it is more suitable for use in the south.

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