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Diamond-Epoxy AP®


DIAMOND-EPOXY AP is a 100% solids, UV-resistant, highly versatile, self-leveling epoxy coating engineered with stress-relieving flexibility that provides a durable material that resists wear from foot traffic, rubber wheels and chemical attack. It cures to form a smooth, glossy surface finish, or a slip-resistant finish with the addition of aggregate.

Diamond-Epoxy AP is a versatile polymer coating that can be installed by squeegee and roller to provide a smooth, glossy finish for coating and sealing concrete floors. Diamond-Epoxy AP is suited for floor surfaces subjected to chemical exposure and mechanical abuse. See DiamondStone Chemical Resistance Guide for chemical and concentration resistance. Common applications include manufacturing facilities, laboratories, electronics assembly facilities and packaging facilities. Diamond-Epoxy AP can be used as a body coat under urethane floors, a self-leveling slurry, broadcast system or a flood coat to provide a smooth finish to epoxy mortar floors.


Do not apply when concrete temperature is less than 50° F or greater than 95° F. (Material cures slower at cooler temperatures, and working time will be substantially reduced at higher temperatures.) All components should be stored in a dry place at temperatures between 65° F and 85° F. Confirm product performance in specific chemical environment prior to use. Substrate temperature must be at least 5° F above the dew point. Diamond-Epoxy AP’s fast-cure formula is not light-stable and will amber or yellow if used as a stand-alone product. Actual color may vary slightly upon application. Diamond-Epoxy AP is not recommended in Clear.

  • Moisture tolerant*
  • Optional Non-Sacrificial Anti-Microbial® additive
  • Engineered with stress-relieving flexibility
  • Low-odor formula
  • 100% solids; no VOCs
  • No extending fillers or diluents
  • Versatile as a coating or binder
  • Slip resistant
  • UV resistant
  • Available in fast-cure formula
  • Qualified LEED® product
*When used in conjunction with a DiamondStone® moisture-control product


Compressive Strength (ASTM D-695)    19,501 psi
Compressive Yield Strength (ASTM D-695)   9,850 psi
Tensile Strength (ASTM D-638)    6,230 psi
Ultimate Elongation (ASTM D-638)   11%
Flexural Strength (ASTM D-790)   9,680 psi
Hardness (ASTM D-2240)   78
Bond Strength (ASTM D-4541)   Conc.Fails
Abrasion Resistance (ASTM D-4060)  80 mg
Volume Solids  100%
VOC at 77° F  0 g/ltr

The data shown above reflect typical results based onlaboratory testing under controlled conditions. Reasonable variationsfrom the data shown above may result.


OX-Grit 30
Medium  8–10 lbs/1,000 square foot
Heavy  10–15 lbs/1,000 square foot

SHELF LIFE: 6 months at 77° F 


See Chemical Resistance Guide for all DiamondStone products.


Refer to DiamondStone cleaning and maintenance instructions.


Additional colors, including Clear, are available upon request.


DiamondStone, LLC recommends the use of slip-resistant grit with this product. Floors should be sloped to drain to prevent standing water or chemicals. As with any surface, all spills should be removed as soon as possible to prevent a slipping hazard. Always use protective clothing, gloves and goggles consistent with OSHA regulations during use. Avoid eye and skin contact. Do not ingest or inhale. Refer to Material Safety Data Sheet for detailed safety precautions. When using fast-cure version, system must be topcoated due to poor UV resistance.  


Apply only to clean and sound concrete substrates that are free of all coatings, sealers, curing compounds, oils, greases or any other contaminants. New concrete should be cured a minimum of 28 days. Concrete that has been contaminated with chemicals or other foreign matter must be neutralized or removed. Remove any laitance or weak surface layers. Concrete should have a minimum surface tensile strength of 300 psi. Prepare surface by mechanical means to achieve a profile equal to industry standards. Moisture testing of the concrete surface should be performed pursuant to ASTM E-1907 moisture testing specification. See DiamondStone Concrete Moisture Limits & Testing Policy for project-specific testing requirements and, if necessary, moisture-tolerant options. Bare concrete should be tested for pH and exhibit a pH between 7 and 11. NOTE: Although testing is critical, it is not a guarantee that future challenges will not arise. All surface irregularities, cracks, expansion joints and control joints should be properly addressed prior to application. Outgassing may occur due to the porosity of some concrete surfaces. Refer to DiamondStone Surface Preparation Guidelines for more details. 


DiamondStone, LLC warrants its products to be free from defects inmaterial and workmanship. DiamondStone, LLC’s sole obligation andBuyer’s exclusive remedy in connection with the products shall belimited, at DiamondStone, LLC’s option, to either replacement ofproducts not conforming to this warranty or credit to Buyer’s accountin the invoiced amount of the nonconforming products. Any claim underthis warranty must be made by Buyer to DiamondStone, LLC in writingwithin five (5) days of Buyer’s discovery of the claimed defect, but inno event later than the expiration of the applicable shelf life, or one(1) year from the delivery date, whichever is earlier. Buyer’s failureto notify DiamondStone, LLC of such nonconformance as required hereinshall bar Buyer from recovery under this warranty.

This Limited Warranty is exclusive and in lieu of all other warranties of any kind or nature whatsoever. DiamondStone, LLC makes no other warranties concerning this product. No other warranties, whether expressed, implied or statutory, shall apply. All other warranties, including, but not limited to, implied warranties of good performance, merchantability and fitness for particular purpose are hereby excluded and disclaimed. In no event shall DiamondStone, LLC be liable for consequential or incidental damages.

Any recommendation or suggestion relating to the use of the products made by DiamondStone, LLC, whether in its technical literature, in response to specific inquiry, or otherwise, is based on data believed to be reliable; however, the products and information are intended for use by Buyers having requisite skill and know-how in the industry, and therefore it is for the Buyer to satisfy itself of the suitability of the products for its own particular use, and it shall be deemed that Buyer has done so, at its sole discretion and risk. Variation in environment, changes in procedures of use, or extrapolation of data may cause unsatisfactory results. DiamondStone, LLC cannot guarantee that color will conform to sample, if provided.