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KINJOYA FA PLAIN
APP Modified Bitumen Membrane with Smooth, Dense Surface

KINJOYA FA PLAIN is a high-performance atactic polypropylene (APP) polymer-modified bituminous waterproofing membrane. Formulated with selected bitumen, modified with APP polymers and specialized additives, it delivers exceptional heat resistance, adhesive strength, and low-temperature flexibility.

A chemically stable, reinforced polyester non-woven fabric serves as the central reinforcement, providing high mechanical strength and dimensional stability. Both surfaces are covered with an ultra-thin polyethylene film that retracts during torch application, ensuring easy installation and protection from contamination.


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Application
Key Benefits
Install Guide
Storage

KINJOYA FA PLAIN Application


Designed for waterproofing building structures, including walls, foundations, and planter boxes, with primary applications in industrial, commercial, and residential roofing systems.

KINJOYA FA PLAIN Key Benefits


  • Excellent Heat Resistance: APP-modified membranes maintain exceptional dimensional stability under high temperatures, resisting flow deformation.

  • Strong UV Resistance: With superior aging resistance, they achieve a long service life in exposed applications.

  • Chemical Corrosion Resistance: Stable performance in acidic, alkaline, and saline environments, ideal for specialized applications like chemical plants and wastewater treatment tanks.

  • High Plastic Deformation Capacity: Featuring chewing gum-like plasticity, the membranes accommodate substrate settlement and creep, suitable for structurally stable projects.


KINJOYA FA PLAIN Install Guide


  • Apply over clean, dry, dust and debris-free substrates. Primerequired substrates prior to application.

  • When re-roofing, remove all prior roofing materials down to aclean debris-free substrate and properly close-off all abandoned roof penetrations.

  • Do not apply over shingles or any granulated surface.

  • While installing KINJOYA FA PLAIN:

    a. Start at the low point of the roof.

    b. Unroll the material and allow to relax then re-roll themembrane once relaxed.

    c. Install with traditional torch roofing techniques ensuring proper heating of the roofing material. Fully torch the burn off film creating a pool of asphalt. Pay close attention to the sidelap.

  • Details and flashing may be installed using hot asphalt, coldapplication or torch techniques. Check project details for properinstallation requirements.

KINJOYA FA PLAIN Storage


  • Store the product upright in a cool warehouse, retaining inner supports. Keep it on pallets with the original protective film intact. Stack no more than two pallets high, using dunnage between layers for isolation. 

  • Protect from direct sunlight, heat sources, freezing temperatures, organic solvents, and physical impact. 

  • The product is suitable for long-term storage when these conditions are maintained.

  • All information is nominal values at the time of manufacturing, and related performance properties are based on the "as manufactured" condition. Actual values may vary depending on application methods, substrate conditions, environmental factors, and specific product configurations.

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