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Johns Manville MBR Flashing Cement Activator, 44.1 oz, Black
Regular price $69.50Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville MBR Flashing Cement Activator, 44.1 oz, Black
Johns Manville MBR Flashing Cement Activator is the second component of the two-part JM PermaFlash Bituminous Flashing System, an elastomeric liquid-applied flashing material for penetrations and details on JM BUR and SBS membrane roofs. This 44.1 oz black activator cures with the cement base to a durable, flexible film. Sold as one 44.1 oz unit.
Key Features:
- Two-part system: Activator component of the two-part JM PermaFlash Bituminous Flashing System.
- Elastomeric film: Cures to a durable elastomeric film with superior flexibility and durability.
- Exceptional bonds: Forms exceptional bonds between modified bitumen and the underlying substrate.
- UV stable: UV-stable, high-solids formulation.
- Low odor, VOC compliant: Low odor and VOC compliant for sensitive job sites.
- Cold-applied alternative: Ideal where hot asphalt is prohibited, not desirable, or not practical.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Sell unit | 1 each |
| Product line | JM PermaFlash Bituminous Flashing System |
| Color / finish | Black |
| Available sizes | 44.1 oz |
| Material | Two-part, elastomeric, liquid-applied flashing material (activator component) |
| Finish / texture | Cures to a durable elastomeric film |
| Intended use | Flashing of penetrations and details with JM BUR and SBS membrane products |
| Volume solids | High solids as printed |
| VOC | VOC compliant as printed |
Fit and Compatibility:
For use with JM BUR and SBS membrane products as part of the JM PermaFlash Bituminous Flashing System for penetrations and other details. Requires the matching JM flashing cement base component, sold separately.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 44.1 oz unit of MBR Flashing Cement Activator in black.
Q: Is this the complete flashing material?
A: No, it is the activator for a two-part system; use it with the matching JM PermaFlash flashing cement base.
Q: What does it cure to?
A: A durable elastomeric film that bonds modified bitumen to the underlying substrate.
Q: Where is it useful?
A: It is ideal where hot asphalt is prohibited, not desirable, or not practical.
Q: Is it suitable around occupied buildings?
A: Yes, it is low odor and VOC compliant.
Q: Is it UV resistant?
A: Yes, the formulation is UV stable.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Two-part liquid flashing systems like PermaFlash let you detail penetrations, pipes and parapets without a kettle or mop cart, which is valuable on occupied buildings and in hot-asphalt-restricted zones. Mix in the activator exactly as directed, since ratio errors affect cure and bond. This 44.1 oz activator pairs with the corresponding JM flashing cement component for JM BUR and SBS assemblies.
Follow the manufacturer's mixing and application precautions, wear gloves and eye protection, and provide ventilation when working with liquid-applied bituminous materials.
Order the Johns Manville MBR Flashing Cement Activator to complete your two-part PermaFlash flashing system.
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