Description
Bonstone® Ultimate MPH is a two-component, UV-stable, structural grade urethane epoxy designed for high-performance bonding in cold weather and fast-setting applications. Its knife-grade viscosity makes it ideal for anchoring, laminating, and mitering in demanding stone and construction environments. Unlike conventional epoxies, Ultimate MPH cures rapidly even in cooler temperatures (40°F–50°F), making it a go-to adhesive for exterior installations and time-sensitive work.
Key Features & Benefits
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Cold-weather performance – bonds effectively at 40°F–50°F (4–5°C).
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Fast cure – 15-minute set time, full cure in 2 hours.
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UV stable – non-yellowing, non-staining, and resistant to bleeding.
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Low odor – safer for shop and jobsite use.
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Strong adhesion – adheres to porous stone, concrete, and metal.
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Versatile use – interior, exterior, vertical, and horizontal applications.
Common Applications
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Anchoring stone and architectural components
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Bonding stone-to-stone, concrete, and metal
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Mitering countertops, panels, and trim
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Laminating limestone and natural stone pieces
Technical Specifications
| Property | Value | Test Method |
|---|---|---|
| Mix Ratio | 2:1 | – |
| Viscosity | Knife-Grade | – |
| Pot Life | 6 minutes | – |
| Set Time | 15 minutes | – |
| Cure Time | 2 hours | – |
| Application Temp | 40°F–50°F (minimum), 75°F recommended | – |
| Coverage | 50 mils (1/16”) ≈ 30 ft² or 231 cu. in. | – |
| Tensile Strength | 4,310 psi | ASTM D-638 |
| Compressive Strength | 7,137 psi | ASTM D-695 |
| Flexural Modulus | 474,401 psi | ASTM D-790 |
| Shore D Hardness | 82 | ASTM D-1706 |
| Elongation at Break | 0.93% | ASTM D-638 |
Compliance & Certifications
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Zero VOC product
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UV-stable formulation for exterior use
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Tested to ASTM standards
Compatible Substrates
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Porous natural stone (granite, limestone, marble)
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Concrete
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Metals (steel, aluminum, etc.)
Packaging & Ordering Information
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180ml Cartridge – use with Manual Single Cartridge Gun (011055)
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Pint Kit – 1 Pint A + (8) 1 oz Tubes B
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Quart Kit – 1 Quart A + (3) 5 oz Tubes B
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Gallon Kit – 1 Gallon A + 2 Quarts B
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Gallon/Quart Kit – (1) 5 Gallon A + 10 Quarts B
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Available Colors: Buff, Gray
Why Choose Bonstone Ultimate MPH?
For fabricators, installers, and contractors who need a fast-curing, exterior-grade epoxy that performs in cold conditions, Bonstone Ultimate MPH delivers unmatched strength and clarity. Its UV-stable, non-yellowing formula ensures durable, long-lasting bonds without staining or bleeding.
📞 Order today from Chemical Concepts at 800-220-1966 or request a quote online.
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