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Johns Manville PMMA All-Purpose Primer, 10 kg Pail, Translucent Elastomeric Primer
Regular price $475.00Johns Manville PMMA All-Purpose Primer, 10 kg Pail, Translucent Elastomeric Primer
Johns Manville PMMA All-Purpose Primer is a translucent, cloudy-white elastomeric liquid primer that, when combined with JM PMMA Catalyst, forms a flexible combination primer for the JM PMMA system. Sold as one 10 kg pail, it promotes adhesion on membrane, cement board, concrete, masonry, wood and asphalt-type substrates and reduces staining over residual or existing asphalt systems.
Key Features:
- Multi-substrate bond: Promotes adhesion on concrete, masonry, wood, asphalt and various other surfaces.
- Ponding water rated: Suitable for use in ponding water areas.
- UV stable: Formulation is UV stable for exposed roof environments.
- High solids: High-solids, VOC-compliant liquid-applied primer.
- Reduces asphalt staining: Helps reduce staining on applications containing residual or existing asphalt systems.
- Catalyst system: Combined with JM PMMA Catalyst to form a flexible combination primer.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Sell unit | 1 pail, 10 kg |
| Product line | JM PMMA |
| Type | Elastomeric, liquid-applied membrane primary layer |
| Material | Elastomeric liquid-applied primer |
| Color / finish | Translucent, cloudy white |
| Dimensions | 10 kg pail |
| Intended use | Primer for JM PMMA system on membrane, cement board, concrete, masonry, wood and other recommended substrates |
| Water exposure | Suitable for ponding water areas |
| Performance | UV stable, high solids, VOC compliant |
| Components | Requires JM PMMA Catalyst (sold separately) |
Fit and Compatibility:
Designed for use in the JM PMMA liquid-applied system and must be combined with JM PMMA Catalyst, sold separately. Use on JM-approved substrates such as membrane, cement board, concrete, masonry and wood, and over residual or existing asphalt where staining reduction is needed.
Frequently Asked Questions (FAQ):
Q: What comes in the container?
A: One 10 kg pail of JM PMMA All-Purpose Primer in translucent, cloudy white; the catalyst is sold separately.
Q: Which substrates can it prime?
A: It primes membrane, cement board, concrete, masonry, wood, asphalt and various other surfaces as recommended by JM.
Q: Is it okay in ponding water areas?
A: Yes, the manufacturer lists it as suitable for ponding water areas and UV stable.
Q: Why use a primer over old asphalt?
A: It promotes adhesion and reduces staining on applications that contain residual or existing asphalt systems.
Q: Is it VOC compliant?
A: Yes, it is described as high solids and VOC compliant.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
On reroofs with heavy asphalt residue, the all-purpose primer is the right choice because it both bonds and holds back staining. Mix in the catalyst exactly as the system guidelines direct and apply at the specified rate before flooding the PMMA resin and embedding the scrim. Always verify substrate compatibility with JM for unusual decks or existing membranes.
Wear gloves, eye protection and ventilation when handling catalyzed liquid membrane components, and follow the safety data sheet and application instructions.
Order the Johns Manville PMMA All-Purpose Primer for dependable adhesion across your PMMA roof system substrates.
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