APP (Atactic Polypropylene) waterproofing membrane is a type of preformed waterproofing membrane commonly used in construction projects. It is made by blending atactic polypropylene with asphalt and reinforced with polyester or fiberglass.
- Features of APP Membranes:
- APP waterproofing membranes are highly resistant to high temperatures, making them suitable for use in hot climates. They have a high resistance to UV radiation and other environmental factors, which makes them an ideal choice for long-term waterproofing. The addition of APP to the bitumen mixture gives APP membranes superior heat resistance and excellent flexibility, even in cold temperatures.
- Advantages of APP Membranes
- APP waterproofing membranes have a long lifespan and are highly durable, making them a cost-effective solution for waterproofing buildings and structures. They are suitable for use in both new construction and retrofitting applications. Due to their high flexibility, APP membranes can be installed over complex shapes and irregular surfaces. They also require minimal maintenance once installed and are highly resistant to root penetration.
- Limitations of APP waterproofing Membranes
- APP membranes are not recommended for use in areas with significant temperature fluctuations. They can become brittle in cold temperatures and lose their flexibility, which can lead to cracking and failure. APP membranes are also more difficult to install than other types of waterproofing membranes and require specialized equipment and experienced professionals.
- Applications of APP Membranes
- APP waterproofing membranes are suitable for use in a wide range of applications, including roofing, foundation walls, and underground structures. They are highly effective in hot climates and can withstand prolonged exposure to UV radiation and other environmental factors. Due to their high flexibility, APP membranes can be installed over complex shapes and irregular surfaces.
