Super Shield SL (Seven Layer) Market Overview, Demand, Segments, Insights and Top Companies
The APP (Atactic Polypropylene) membrane is a type of modified bitumen roofing membrane commonly used in the construction industry for waterproofing flat or low-sloped roofs. This membrane is designed to enhance the durability and performance of traditional bitumen roofing systems.
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The description you provided indicates that the APP membrane is a 7-layered product, which suggests it is a highly engineered and robust roofing material. The seven layers likely include a combination of reinforcing materials and coatings to provide specific properties and performance characteristics. Typically, the layers in a high-quality 7-layer APP membrane may consist of:
Polyester or Fiberglass Mat: This is the base layer and provides reinforcement to the membrane, imparting strength and stability to the product.
APP Modified Bitumen Layer: The bitumen (asphalt) layer is modified with Atactic Polypropylene (APP), which improves the material's resistance to aging and weathering. APP-modified bitumen offers enhanced flexibility and allows the membrane to perform well under various weather conditions.
Polyester or Fiberglass Mat: Another layer of reinforcing material is applied to add further strength and dimensional stability to the membrane.
APP Modified Bitumen Layer: Another layer of APP-modified bitumen for additional durability and waterproofing capabilities.
Polyester or Fiberglass Mat: The reinforcement layer is repeated to achieve the desired strength and performance.
APP Modified Bitumen Layer: Yet another layer of APP-modified bitumen to enhance the waterproofing and overall protection of the membrane.
HMHDPE Film Backing: The topmost layer consists of a High-Molecular-Weight High-Density Polyethylene (HMHDPE) film. This film serves as a protective barrier against UV radiation and other external factors, improving the longevity of the membrane.
The combination of the APP-modified bitumen and the polyester or fiberglass reinforcement layers provides a durable, flexible, and long-lasting roofing solution.











