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Karnak 229 AR SBS Elastomeric Roof Coating, Black, Brush/Trowel Grades, 1-5 gal
Regular price $161.22Orders start at $399 — combine any items to reach the minimum. Learn more
Karnak 229 AR SBS Elastomeric Roof Coating, Black, Brush/Trowel Grades, 1-5 gal
Karnak 229 AR Elastomeric is a single-component, SBS rubber-reinforced asphalt coating that forms a tough, flexible, rubber-like waterproof barrier on roofs and structural surfaces. It is offered in black in brush, spray or trowel grades from 30 oz to 5 gallon containers. It adheres to primed concrete, masonry, metal, asphalt, modified bitumen membranes and sprayed urethane foam.
Key Features:
- SBS rubber reinforced: SBS rubber-reinforced asphalt forms a highly elastomeric, rubber-like coating barrier.
- Excellent elongation: Excellent elongation properties with good cold-weather pliability let the film bridge roof movement.
- Wide adhesion: Adheres to most surfaces including primed concrete, masonry, metal, asphalt, modified bitumen membranes and sprayed urethane foam roofing.
- Water resistance: Excellent water and water-vapor resistance protects the substrate beneath.
- Weather and salt resistant: Excellent weather resistance plus good resistance to salts and alkalies.
- Single component: One-component formula needs no intermixing on the job.
- Multiple grades: Comes in brush, spray or trowel grades to match the application method.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Karnak |
| Sell unit | Varies by size: 30 oz tube, 1 gal, 3 gal or 5 gal pail |
| Product line | Karnak 229 AR Elastomeric Roof Coating |
| Available colors | ['Black'] |
| Available sizes | ['30 oz', '1 gal Trowel Grade', '3 gal Brush Grade', '3 gal Trowel Grade', '5 gal Brush Grade', '5 gal Trowel Grade'] |
| Material | SBS rubber reinforced asphalt |
| Type | Single-component elastomeric roof coating |
| Finish / texture | Tough, flexible, elastic rubber-like film |
| Grades | Brush, spray or trowel |
| Resistance | Water, water vapor, weather, salts and alkalies |
| Approvals | Compatible with many highway and bridge specifications |
Fit and Compatibility:
Apply over primed concrete, masonry, metal, asphalt, modified bitumen membranes and sprayed urethane foam roofing. Use Karnak primers where required for concrete and masonry, and select brush grade for large field areas or trowel grade for details and flashing work.
Frequently Asked Questions (FAQ):
Q: What sizes and grades are available?
A: Black 229 AR comes in 30 oz, 1 gallon trowel, 3 gallon brush or trowel, and 5 gallon brush or trowel grades.
Q: What surfaces can it coat?
A: It adheres to most surfaces including primed concrete, masonry, metal, asphalt, modified bitumen membranes and sprayed urethane foam roofing.
Q: Do I need to mix components?
A: No, it is a single-component coating that needs no intermixing.
Q: Which grade should I choose?
A: Brush grade suits large field applications, trowel grade suits flashing and detail work, and spray grade speeds coverage where equipment is available.
Q: How does it perform in cold weather?
A: It has good cold-weather pliability along with excellent elongation and weather resistance.
Q: Is it suitable for structures other than roofs?
A: Yes, it is compatible with many highway and bridge specifications and resists salts and alkalies.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
229 AR is a workhorse SBS-modified asphalt coating for restoring weathered modified bitumen and metal roofs and for sealing details on bridge and highway structures. Choose trowel grade for flashings, seams and penetrations and brush or spray grade for field coverage, and plan coats around temperatures that allow good cold-weather pliability. On concrete and masonry, prime first for best adhesion.
Asphalt-based coatings contain solvents; apply with adequate ventilation and keep containers away from open flame and ignition sources.
Order Karnak 229 AR Elastomeric Roof Coating in the size and grade your project needs.
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