Diamond-HD Novolac®




DIAMOND-HD NOVOLAC is a heavy-duty, three-component polymer and aggregate floor surfacer. This durable topping provides excellent chemical resistance to aggressive acids while delivering superior durability to impact and abrasion commonly found in harsh chemical service environments. Diamond-HD Novolac includes a specially graded aggregate blend designed to provide a dense floor surface. The inclusion of novolac throughout the entire system ensures the permanency of chemical resistance even in the event of damage to the surface. 


  • Optional Anti-Microbial® additive

  • 100% solids; no VOCs

  • Excellent durability

  • Resists aggressive acids, including 98% sulfuric

  • Stress-relieving additive avoids age-cracking

  • Proprietary high-density aggregate blend

  • Slip-resistant

  • Qualified LEED® product



Compressive Strength (ASTM C-579).....14,500 psi

Tensile Strength (ASTM C-307).................2,200 psi

Flexural Strength (ASTM C-580)...............4,275 psi

Hardness (Shore D) (ASTM D-2240)..............84–94

Bond Strength (ASTM D-4541)....................425 psi

Abrasion Resistance (ASTM D-4060)............35 mg

Foot Traffic at 77° F ...................................8–10 hrs

The data shown above reflect typical results based on laboratory testing under controlled conditions. Reasonable variations from 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




Diamond-HD Novolac is well suited for floor surfaces subjected to chemical exposure and mechanical abuse. Common areas of use include chemical processing plants, secondary containment areas, breweries and laboratories.




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 shouldbe 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 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. 



Do not apply when concrete temperatures are 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. Do not thin with solvents unless advised to do so by DiamondStone, LLC. Confirm product performance in specific chemical environment prior to use. Substrate temperature must be at least 5° F above the dew point. Diamond-HD Novolac is not light-stable and will amber or yellow from UV exposure, including facility lighting. Aggressive acids will stain the surface; therefore, the color Tile Red is recommended to minimize the aesthetic effect of staining. Actual color may vary slightly upon application. Refer to DiamondStone Chemical Resistance Guide for specific chemical and concentration resistance.


SHELF LIFE6 months at 77° F


See Chemical Resistance Guide for all DiamondStone products. 


Refer to DiamondStone cleaning and maintenance instructions.



DiamondStone, LLC warrants its products to be free from defects in material and workmanship. DiamondStone, LLC’s sole obligation and Buyer’s exclusive remedy in connection with the products shall be limited, at DiamondStone, LLC’s option, to either replacement of products not conforming to this warranty or credit to Buyer’s account in the invoiced amount of the nonconforming products. Any claim under this warranty must be made by Buyer to DiamondStone, LLC in writing within five (5) days of Buyer’s discovery of the claimed defect, but in no event later than the expiration of the applicable shelf life, or one (1) year from the delivery date, whichever is earlier. Buyer’s failure to notify DiamondStone, LLC of such nonconformance as required herein shall 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.

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