Achieving a complete and watertight building envelope often requires meticulous attention to detail at complex intersections, cuts, and terminations of waterproofing membranes. The Protecto Wrap JS160H Mastic, available from A1A Wholesale Supply, is an essential accessory designed to ensure the integrity of your Protecto Wrap waterproofing and flashing systems in these critical areas.
JS160H Mastic is a rubberized blend of premium grade bituminous and synthetic resins. It is specifically formulated to provide an excellent seal for detail cuts and membrane terminations on all Protecto Wrap Company’s waterproofing and flashing membranes. This ensures that even the most challenging areas of an installation are properly protected against water intrusion.
The mastic demonstrates excellent adhesion to various substrates, including steel, concrete, and the membranes themselves. It has a relatively quick tack-free time of 30 minutes, which aids in efficient installation. JS160H Mastic is also VOC Compliant, adhering to environmental regulations.
Key Features and Benefits for Contractors:
- Optimized for Protecto Wrap Systems: Specifically formulated to work seamlessly with Protecto Wrap waterproofing and flashing membranes.
- Superior Adhesion: Provides excellent adhesion to steel, concrete, and membranes for a durable seal.
- Fast Tack-Free Time: 30 minutes tack-free time for efficient application.
- VOC Compliant: Meets environmental standards for volatile organic compounds.
- Versatile Packaging: Available in multiple sizes (10.5 oz tube, 1-gallon can, 5-gallon can) for various project needs.
- Long Shelf Life: Minimum 1 year shelf life.
- Durable Composition: SBS Modified Rubberized Asphalt base.
Applications:
- Sealing Detail Cuts: Used to seal precise cuts made to membranes around penetrations or complex shapes.
- Membrane Terminations: Applied at the edges and terminations of waterproofing and flashing membranes to ensure a watertight seal.
- General Sealing: For any application requiring a durable and flexible sealant that is compatible with asphaltic membranes.
Installation Considerations:
- Flammability: Extremely flammable. Keep away from heat, sparks, and flame during transportation, storage, handling, and application. Do not smoke, weld, or use flame near the container.
- Ventilation: Ensure proper ventilation during application.
- Personal Protective Equipment: Wear appropriate clothing, gloves, and a properly fitted respirator (NIOSH/MSHA) during application. Guard against contact with skin and eyes.
- Surface Preparation: Surfaces should be clean, dry, and free of dirt or contaminants.
- Storage: Store between 40∘F (4∘C) and 120∘F (49∘C) in original unopened containers, out of weather and direct sunlight, in a dry, well-ventilated area away from heat and all sources of ignition. Store away from oxidizers and acids.
Warranty & Storage: Protecto Wrap JS160H Mastic is covered by the Protecto Wrap Standard 10 Year Limited Warranty (implied for compatible systems, though not explicitly stated in the provided snippet for the mastic itself, but standard for Protecto Wrap products).
Product Details:
- Brand: Protecto Wrap
- Product Name: JS160H Mastic
- Composition: SBS Modified Rubberized Asphalt
- Adhesion to Steel: Excellent
- Adhesion to Concrete: Excellent
- Adhesion to Membrane: Excellent
- Shelf Life (minimum): 1 Year
- Tack Free Time: 30 minutes
- VOC Compliant: Yes
- Packaging:
- 10.5 Fluid Oz. Tube (Approx. 32 lineal feet based on 1/4″ bead)
- 1 Gallon Can (Approx. 200 lineal feet based on a 2″ 60-mil, wet-film, troweled-bead)
- 5 Gallon Can
- Storage Temperature: 40∘F (4∘C) and 120∘F (49∘C)
- Flammability: Extremely flammable





