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APP Modified Bitumen Membrane

APP modified bitumen membrane is produced by modifying high-quality bitumen with atactic polypropylene (APP) and reinforcing with a carrier. It exhibits excellent high-temperature stability and anti-aging properties, making it suitable for hot regions and high-temperature construction environments. With high tensile strength and elongation, it effectively resists stress from substrate cracking. Flexible application methods include torch-on or mechanical fixing. Widely used in roofs, underground structures, parking decks, etc., our APP membranes come with various carriers and surfacing (e.g., mineral granules, PE film) to meet different design requirements and budgets, making them ideal for large public buildings and industrial plants.

TYPES OF APP MODIFIED BITUMEN MEMBRANES

KINJOYA FA MINERAL
High-performance APP modified bituminous membrane with mineral granule surface. Offers exceptional heat resistance, adhesive strength, and a chemically stable polyester reinforcement for diverse roofing applications.
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KINJOYA FA PLAIN
High-performance APP polymer-modified bituminous membrane with a smooth, dense surface. Delivers heat resistance, adhesive strength, low-temperature flexibility, and high mechanical strength from polyester reinforcement.
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KINJOYA FA PLAIN SA
High-performance APP polymer-modified bituminous membrane with self-adhesive compound on bottom. Delivers heat resistance, adhesive strength, and low-temperature flexibility. Polyester reinforcement provides mechanical strength and dimensional stability.
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Core Advantages of APP Modified Bitumen Membrane

Excellent Heat Resistance

APP modified bitumen membrane resists high temperatures without flowing or deforming. The polymer network maintains integrity under strong sun on exposed roofs. This thermal stability prevents softening or slippage during summer conditions. The material's heat resistance makes it ideal for hot climates and applications with significant heat exposure.

Strong Anti-aging Properties

APP modification enhances resistance to UV radiation and oxidation, slowing material aging. This extends service life while maintaining physical properties after years of exposure. The membrane retains flexibility and waterproofing over time, reducing maintenance needs. Long-term durability lowers lifecycle costs, offering reliable performance for projects requiring extended service intervals.

Excellent Heat Resistance
Strong Anti-aging Properties

Suitable Applications for APP Modified Bitumen Membrane

Roofing Applications

APP membranes are ideal for various roof types, including flat roofs, pitched roofs and green roofs. Their excellent heat resistance makes them particularly suitable for exposed roofing in hot climates, where they withstand intense solar radiation without softening or flowing. When combined with insulation layers, they form a complete roofing system that protects buildings from rainwater ingress while resisting UV-induced aging. They are commonly specified for industrial plants, commercial buildings and residential complexes where long-term weather exposure is a primary concern.

Underground and Specialized Applications

These membranes perform reliably in underground structures such as basement slabs, retaining walls and podium decks, where they create a durable barrier against groundwater and soil moisture. Their robust physical properties also make them suitable for parking platforms, bridge decks and tunnel linings that require both waterproofing and resistance to mechanical stress. In planting roof applications, they can be combined with root-resistant layers to prevent vegetation penetration. Their adaptability to different substrates and proven performance in civil engineering works make them a versatile choice for demanding projects.

Roofing Applications
Underground and Specialized Applications

Key Installation Considerations for APP Modified Bitumen Membrane

APP membranes are torch-applied, so installation quality directly affects performance. Substrate must be flat and dry, with primer for adhesion. Install from low to high with proper lap width. Heat evenly to melt the modified bitumen without burning, then roll to remove air. Details like corners and pipe penetrations need additional reinforcement. Water testing should follow installation to verify performance. Protect finished work from damage by subsequent trades. Only with proper installation can APP membranes deliver their full performance advantages.

For more installation details, please contact us.

Key Installation Considerations for APP Modified Bitumen Membrane
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