Weifang Zhengtai Waterproof Material Co., Ltd. was established in 2001 year with the registered capital of 1 billion , covering area of 60000 square meter .
APP modified bitumen waterproof membranes, commonly referred to as Atactic Polypropylene modified bitumen membranes, represent a category of advanced roofing and waterproofing solutions.
These membranes are produced from a combination of bitumen and APP polymers, which endows them with superior resistance to heat and ultraviolet radiation, in addition to their waterproofing capabilities. They are reinforced with a non-woven spun bond polyester fabric, which provides exceptional resistance to fatigue, maintains dimensional stability under tension, and allows for flexibility to accommodate structural movements. Furthermore, they exhibit high resistance to punctures and fatigue, along with significant tensile and tear strengths, making them ideal for a variety of waterproofing applications.
APP modified bituminous waterproof membranes find utility in numerous structures, including inverted roofs, terraces, balconies, sunken slabs, bridges, tunnels, airport aprons, ramp areas, and subterranean concrete structures such as foundations, basements, and swimming pools. They are especially advantageous in environments subject to elevated temperatures or considerable structural movement.
The installation of these membranes generally involves a series of steps, including surface preparation, priming, alignment, and torch application. It is imperative to exercise caution to prevent overheating the membrane, as this can compromise the reinforcement and render the membrane ineffective. Ensuring proper sealing of overlaps is critical to achieving watertight integrity.
Proper storage of these membranes is essential; they should be kept vertically in a shaded location, shielded from direct sunlight and extreme heat to avoid degradation. The ideal storage conditions are dry, with a temperature range of +5°C to +35°C. When stored according to the manufacturer’s guidelines, the shelf life of these membranes typically extends to 12 months.
It is imperative to adhere to safety measures when handling these membranes, particularly when utilizing open flames for torching. The membranes are composed of a tacky bitumen compound that may adhere to the skin, but can be effectively removed with an appropriate cleaner.
APP modified bitumen membranes undergo rigorous testing and comply with various standards, including UEATC 2001 and ASTM, thereby guaranteeing their quality and performance.
Certain products in this category are recognized for contributing to environmental credits, such as LEED Materials and Resource (MR) credit 4, owing to their significant recycled content and third-party certification from UL Environment.
8. Variety:
APP modified bitumen membranes are available in various forms, including those with a top surface treated with specialized coatings to minimize adhesive absorption and enhance bonding, as well as options featuring high-density or inorganic-coated glass facers that improve performance characteristics.
9. Global Usage:
These membranes are utilized worldwide in construction and landscaping endeavors for both above and below-grade waterproofing, demonstrating their versatility and dependability within the industry.
APP modified bitumen waterproof membranes are favored for their resilience, adaptability, and the extensive range of environments and applications they can support. Ensuring proper installation and maintenance is crucial for maximizing their effectiveness and durability in any waterproofing initiative.
