Black Jack Elasto-Kool 700 Elastomeric Roof Coating in White is a premium, membrane-forming coating designed to seal and protect low-slope roofs. This elastomeric product blends high elasticity with strong water resistance, reflecting sun heat with its white finish to help reduce cooling costs. Engineered for durability and easy application, it suits residential, commercial, and industrial roofing needs where long-term protection and energy savings are priorities.
What Is Black Jack Elasto-Kool 700 Elastomeric Roof Coating White
This product is a premium elastomeric roof coating that dries to a flexible, seamless membrane. It adheres to common roofing substrates such as asphalt, metal, concrete, foam, and built-up roofs. The elastomeric formula provides excellent elongation and recovery, enabling the coating to bridge minor cracks and movement in the roof structure. The white finish offers high reflectivity, helping to minimize heat absorption and extend the roof’s service life.
Key Features And Benefits
- High Elasticity: The coating stretches with roof movement, reducing cracking and peeling.
- Weather Resistance: Forms a durable barrier against rain, wind, and temperature fluctuations.
- Reflective White Finish: Improves energy efficiency by reflecting sunlight and lowering cooling loads.
- Waterproofing Capabilities: Creates a seamless membrane that resists moisture intrusion.
- Versatile Substrate Compatibility: Bonds to asphalt, metal, concrete, tile, and existing coatings.
- Vapor Permeability Balance: Allows roof assemblies to breathe while keeping water out, depending on film thickness.
Application And Coverage
Proper surface preparation is essential for optimum performance. Surfaces should be clean, dry, and free of loose material, dirt, oil, and mildew. Degreasing and a clean-water rinse may be required on dirty substrates. For best results, a primer might be recommended on porous surfaces or certain substrates, as specified by the product data sheet. Typical coverage rates range from about 40–100 ft² per gallon, depending on substrate texture, porosity, and the desired film thickness. Two coats are often recommended to achieve maximum durability and reflectivity.
Surface Preparation And Substrate Compatibility
Prepare the roof surface to ensure adhesion and longevity. Remove loose granules, blistering coatings, and any ponding water. Repair large cracks and seams before applying the elastomeric coating. The product adheres well to most common roofing materials, including:
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- Asphalt Roofing
- Metal Roof Panels
- Concrete and Slab Surfaces
- Abandoned or damaged built-up roofs
- EPDM, TPO, or other sheet membranes with proper priming
Water can compromise adhesion, so ensure complete dryness during application and curing. In areas with high rainfall, schedule coating during dry periods and allow full cure between coats.
Drying Time, Curing, And Maintenance
Touch-dry times vary with ambient temperature, humidity, and film thickness but generally range from a few hours to a day. Full cure may take several days. It is important to protect the coating from rainfall until fully cured. Once cured, maintenance involves periodic inspection for blisters, cracks, or wash-off in heavy rain events. If damage occurs, small repairs can be made with spot coatings or by applying additional coats to the affected area.
Energy Efficiency And Reflectivity
The White Elasto-Kool 700 coating offers high solar reflectance, contributing to cooler roof surfaces and lower interior temperatures. This can reduce air conditioning loads, especially in hot climates. Energy savings depend on roof slope, geographic location, and building envelope design. The coating’s reflectivity tends to remain stable with age when properly maintained, though occasional cleaning can help sustain surface reflectivity and appearance.
VOC Content And Environmental Considerations
Environmental responsibility is a consideration for commercial and industrial projects. The product data sheet specifies VOC levels and composition. When applying any roof coating, ensure proper ventilation in enclosed spaces, use personal protective equipment as recommended, and follow local regulations for disposal of waste containers and wash water. White coatings also help reduce heat islands in urban areas by reflecting sunlight at the surface.
Warranty, Certification, And Compatibility
Warranty terms vary by manufacturer and project scope. Some distributors offer extended coverage when applied by trained professionals and with proper surface preparation. Check for any certifications or third-party testing that confirm waterproofing performance, embeddable flexibility, and UV resistance. Compatibility with existing coatings or membranes should be verified via the product data sheet and, if necessary, a test patch before full application.
Application Best Practices And Tips
- Temperature Range: Apply within the recommended temperature range to optimize film formation.
- Coating Thickness: Maintain recommended film thickness per coat to achieve durability and reflective performance.
- Two-Coat Strategy: Often yields superior weather resistance and even color coverage.
- Safety Considerations: Wear appropriate PPE and ensure proper ventilation during application and curing.
- Maintenance Plan: Schedule regular roof inspections and clean gutters to prevent debris buildup that can affect coating performance.
Choosing The Right White Elastomeric Roof Coating
When selecting a white elastomeric coating, consider substrate compatibility, climate, roof type, and project budget. The Black Jack Elasto-Kool 700 offers a balance of elasticity, waterproofing, and reflectivity. For aging roofs or areas with significant movement, elastomeric coatings with high elongation capabilities are advantageous. For flat roofs in hot climates, prioritize reflectivity and UV stability to maximize energy savings. Compare performance data sheets, cure times, and warranty terms to determine the best fit for a given project.