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Johns Manville JM Coating Universal Base 5 gal Blue Acrylic Elastomeric Base Coat
Regular price $266.00Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville JM Coating Universal Base 5 gal Blue Acrylic Elastomeric Base Coat
Johns Manville JM Coating Universal Base is a one-part acrylic elastomeric base coating supplied in a 5-gallon unit in blue. It creates a smooth, fully-adhered substrate and helps prevent asphalt bleed-through over asphalt-based roof substrates. One pail is the sell unit; it is used under JM Coatings finish coats.
Key Features:
- One-part formula: Single-component acrylic elastomeric base coating, no mixing required.
- Stops bleed-through: Helps prevent asphalt bleed-through over asphalt-based substrates.
- Smooth substrate: Creates a smooth, fully-adhered substrate for finish coats.
- Fast to topcoat: Can be used within 48 hours of roof membrane installation.
- 5 gallon pail: Supplied in a 5-gallon unit in blue.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Sell unit | 1 pail, 5 gal |
| Product line | JM Coatings Liquid Applied Systems |
| Material | One-part acrylic elastomeric base coating |
| Color / finish | Blue |
| Available colors | Blue |
| Available sizes | 5 gal |
| Intended use | Base coat to create a smooth, fully-adhered substrate and prevent bleed-through over asphalt substrates |
Fit and Compatibility:
Designed as the base coat within JM Coatings liquid-applied systems, applied under JM finish coatings such as JM Coating Silicone. Confirm compatible substrates and topcoat windows with JM system instructions.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One 5-gallon unit of JM Coating Universal Base in blue.
Q: What does a base coat do?
A: It creates a smooth, fully-adhered substrate and helps prevent asphalt bleed-through over asphalt-based roof substrates.
Q: How soon after membrane installation can it be used?
A: The manufacturer states it can be used within 48 hours of roof membrane installation.
Q: Is it a silicone coating?
A: No, it is a one-part acrylic elastomeric base coating; JM silicone finish coatings are separate products.
Q: How much area does a pail cover?
A: Coverage rates are not stated in the sources; consult the manufacturer's application instructions for spread rates.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Over asphalt-based roofs, a bleed-through-blocking base coat is what keeps finish coats clean and consistent in color. Apply it at the specified rate and let it cure fully before the silicone topcoat. The 48-hour window after membrane installation makes it convenient for newer roofs being coated promptly.
Follow the manufacturer's safety data sheet and use proper ventilation and PPE when applying coatings.
Order the Johns Manville JM Coating Universal Base 5-gallon pail to prepare your asphalt substrate for coating.
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