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  • Overview
  • Specs
  • Coverage Rate
  • Cure
  • Chemical
  • Application

AM322HW Anti-Microbial Mildew Resistant Urethane

AM322HW is a two component polyester/aliphatic polyurethane coating that exhibits excellent characteristics for impact and abrasion resistance, chemical resistance, flexibility, weathering, and UV stability.  With a long 2-4 hour pot life it is easy to work with for a wide range of both indoor and outdoor commercial, industrial and residential concrete floor projects.

AM322HW  contains an antimicrobial chemical agent to prevent microorganisms from growing on the surface and are specially formulated to resist mildew growth on the coating film.   The dry coating film of these products are mildew resistant, resists mold fungus and resists stains by mold, In addition, the dry coating film inhibits the growth of bacterial odors, resists microbial odor development and  retards the growth and action of bacterial odors. As part of routine building maintenance, areas should be inspected for visible mold and the conditions causing the mold should be corrected to prevent mold from growing.

Available in a standard high-gloss with a wide selection of clear and 18 color options.  Comes in 1.5 gallon kits, 3 gallon kits and 15 gallon kits.  For even greater abrasion wear resistance consider using the High Wear 325 Aluminum Oxide additive.  Not available for sale in California.

PRIMER: Recommend the 7001 Moisture Cured Polyurethane and E5015CL Water Based Epoxy Primer.

TOPCOAT: None recommended

AM322HW Anti-Microbial Mildew Resistant Urethane Used?

  • Garages
  • Auto Service Centers
  • Warehouses
  • Computer Rooms
  • Laboratories
  • Aircraft Hangers
  • Cafeterias
  • Exterior Tanks
  • Indoor or Outdoor Chemical Exposure Areas
  • Floors subject to frequent exposure to water and high humidity environments

Why AM322HW Urethane?

  • Outstanding durability with impact resistance of 160 in lb (Gardner test)
  • Excellent abrasion resistance Only 22 mg loss (Tabor test) Reduced to 10 mg loss with High Wear 325 additive
  • Excellent Chemical Resistance
  • Anti-Microbial agent added to prevent surface growth of micro-organisms
  • Specially Formulated To Resist Growth Of Mold, Mildew, Fungus On The Surface and helps prevent odors that can result
  • Aliphatic, UV Stable and will not yellow
  • Easy to Use with Long 2-4 Hour Pot Life
  • Great for Indoor & Outdoor Concrete Floor Projects
  • Wide Variety of clear and 18 Different Colors
  • Solvent Based – Excellent adhesion


Solids (CLEAR) By Weight 64%   By Volume 60%
Solids (COLOR) By Weight 70%   By Volume 70%
VOC  335 g/L (mixed)  Meets OTC VOC rules. Not for sale in California
Colors  Off white, off white, light gray, medium gray, tile red, beige, clear, dark gray, brown, blue, light blue, safety yellow, safety red, tan, green
Recommended Film Thickness  3-5 mils wet, 2-3 mils dry
Coverage per Gallon  320 – 500 sq’/gal @3-5 mils wet thickness
Packaging  3 gallon kit, and 15 gallon kit (truck shipment only)
Mix Ratio 2:1 mix ratio by volume
Shelf Life 1 year in unopened container
Finish  High gloss (>70 at 60 degrees @glossmeter)
Abrasion Resistance Tabor abrasor CS-17 wwheel with 1000 gram total load and 500 cycles = 22.0  mg loss  (Only 10 mg loss when used with High Wear 325 additive)
Impact Resistance Gardner impact, direct = 160 in. lb (passed)
Flexibility  No cracks on a 1/8″ mandrel
Adhesion 350 psi @ecometer (concrete failure, no delamination)
Viscosity  Mixed = 200 – 600 cps (typical)
 Hardness D = 62


Coverage Per Gallon  320 – 500 Sq’/Gal @3-5 Mils Wet Thickness


Pot Life – 1.5 gallon volume 2-4 hours
Tack Life (dry to touch) 3-5 hours
Recoat or Topcoat 5-9 hours
Light foot traffic 14 – 24 hours
Full cure (heavy traffic) 3 – 5   days

APPLICATION TEMPERATURE: 45-90 degrees F with relative humidity below 90%


 acetic acid 5% B
 xylene D
 mek A
 methyl alcohol B
 gasoline D
 10% sodium hydroxide E
 50% sodium hydroxide D
 10% sulfuric D
 10% hydrochrolic acid C
 20% nitric acid B
ethylene gylycol D

Rating key: A – not recommended, B – 2 hour term splash spill, C – 8 hour term splash spill, D – 72 hour immersion, E – long term immersion.


PRODUCT STORAGE: Store product in an area so as to bring the material to normal room temperature before using. Continuous storage should be between 60 and 90 degree F. Keep from freezing.

SURFACE PREPARATION: Surface preparation will vary according to the type of complete system to be applied.  For a one or two coat thin build system (3-10 mils dry) we recommend either mechanical scarification or acid etching until a suitable profile is achieved.  For a complete system build higher than 10 mils dry, we recommend a fine brush blast (shot blast)  All dirt, oil, dust, foreign contaminants and laitance must be removed to assure a trouble free bond to the substrate.  A test should be made to determine that the concrete is dry; this can be done by placing a 4’X4’ plastic sheet on the substrate and taping down the edges.  If after 24 hours, the substrate is still dry below the plastic sheet, then the substrate is dry enough to start coating.  The plastic sheet testing is also a good method to determine if any hydrostatic pressure problems exist that may later cause disbonding.

PRODUCT MIXING: This product has a two to one mix ratio by volume- merely mix two gallons of part A with 1 gallon part B.  After the two parts are combined, mix well with slow speed mixing equipment such as a jiffy mixer until the material is thoroughly mixed and streak free.  Avoid whipping air into the coating. Improper mixing may result in product failure. For best mixing results and proper blending of parts A and B, recommend a Jiffy Mixer style drill mixer.

PRODUCT APPLICATION: The mixed material can be applied by brush or roller.  Maintain temperatures within the recommended ranges during the application and curing process.  Properly prime the substrate.  It is best to maintain a wet edge to avoid roller marks.  Direct sunlight or high temperatures may cause visible roller marking during application.  Too thick of an application may result in product failure.  Exposure to certain types of lighting such as sodium vapor lights may cause the product to discolor. Applications with relative humidity higher than 90% and/or poor air circulation may cause improper cure and surface tackiness.

RECOAT OR TOPCOATING: Multiple coats of this product are acceptable.  If you opt to recoat this product, you must first be sure that all of the solvents have evaporated from the coating during the curing process.  The information on the front side are reliable guidelines to follow.  However, it is best to test the coating before recoating or topcoating.  This can be done by pressing on the coating with your thumb to verify that no fingerprint impression is left.  If no impression is created, then the recoat can be started.  Always remember that colder temperatures will require more cure time for the product before recoating can commence.  Before recoating or topcoating, check the coating to insure no contaminants exist.  If a blush or contaminants are present on a previous coat, remove with a standard detergent cleaner.  When recoating this product with subsequent coats of the urethane, it is advisable to apply the recoat before 24 hours passes.  Also, it is advisable to degloss the previous coat to insure a trouble free bond.

CLEANUP: Use ketone solvents

SURFACE CLEANING: Caution! Some cleaners may affect the color of the floor installed. Test each cleaner in a small area, utilizing your cleaning technique. If no ill effects are noted, you can continue to clean with the product and process tested.

RESTRICTIONS: Restrict the use of the surface to light duty and non-harsh chemicals until the coating is fully cured (see technical data under full cure). It is best to let the surface remain dry for the full cure cycle. Dependent on actual complete system application, surface may be slippery, especially when wet or contaminated; keep surface clean and dry.


  • Colors or clarity for clear may be affected by high humidity, low temperatures, or chemical exposure.
  • For best results use a high quality 3/8” nap roller.
  • Slab on grade requires moisture barrier.
  • Substrate temperature must be 5°F above dew point.
  • All new concrete must be cured for at least 30 days.
  • Light or bright colors (white, safety yellow, etc.) may require multiple coats or a suitable color coordinated primer to achieve a satisfactory hide.
  • Colors may vary from batch to batch, therefore, use only product from the same batch for an entire job.
  • Tire contact may cause discoloration or staining.
  • Physical properties are typical values and not specifications.

NOTICE TO BUYER: DISCLAIMER OF WARRANTIES AND LIMITATIONS ON OUR LIABILITY We warrant that our products are manufactured to strict quality assurance specifications and that the information supplied by us is accurate to the best of our knowledge. Such information supplied about our products is not a representation or a warranty. It is supplied on the condition that you shall make your own tests to determine the suitability of our product for your particular purpose. Any use or application other than recommended herein is the sole responsibility of the user. Listed physical properties are typical and should not be construed as specifications. NO WARRANTY IS MADE, EXPRESSED OR IMPLIED, REGARDING SUCH OTHER INFORMATION, THE DATA ON WHICH IT IS BASED, OR THE RESULTS YOU WILL OBTAIN FROM ITS USE. N0 WARRANTY IS MADE, EXPRESSED OR IMPLIED, THAT OUR PRODUCT SHALL BE MERCHANTABLE OR THAT OUR PRODUCT SHALL BE FIT FOR ANY PARTICULAR PURPOSE. NO WARRANTY IS MADE THAT THE USE OF SUCH INFORMATION OR OUR PRODUCT WILL NOT INFRINGE UPON ANY PATENT. We shall have no liability for incidental or consequential damages, direct or indirect. Our liability is limited to the net selling price of our product or the replacement of our product, at our option. Acceptance of delivery of our product means that you have accepted the terms of this warranty whether or not purchase orders or other documents state terms that vary from this warranty. No representative is authorized to make any representation or warranty or assume any other liability on our behalf with any sale of our products. Our products contain chemicals that may CAUSE SERIOUS PHYSICAL INJURY. BEFORE USING, READ THE MATERIAL SAFETY DATA SHEET AND FOLLOW ALL PRECAUTIONS TO PREVENT BODILY HARM.