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Technical Data Sheet (TDS)


Exterior Urethane Coating Base Coat

Special features

  • Fast Drying
  • Exceptional Slip-Resistance with sand broadcast
  • UV stable

Product Description
STAUF CCO 640 is a two component, 100 % solid urethane (aspartic) base coat for professional flooring installation over outdoor floors requiring industrial grade coatings. CCO 640 can be mixed and modified with tints for coloring, flakes for decorative flooring and sand for increased slip resistance. Once cured, floor coating is safely cleaned by using any number of methods including high pressure, ammonia, bleach, solvents and steam washing. It is UV stable and does not chaulk or amber due to sun light.
Pre-Installation Checklist
A successful installation requires proper preparation of the sub floor. Read and understand all applicable guidelines and technical data sheets before beginning installation. Follow industry standards and flooring manufacturer's recommendations for sub floor preparation, design, layout and application of flooring materials.
Sub Floor Examination
Prior to installation, the sub floor must be checked according to national standards. It must be solid and sound, level, free of indentations as well as resistant to pressure and tension.
Sub Floor Preparation
The condition of the sub floor will determine which type of mechanical treatment is required (e.g. wire brushing, sanding, grinding or shot blasting). Dust, paint, curing compounds, sealers, residual adhesives or other surface pollutants MUST be removed by suitable means. Extent of sub floor preparation can only be determined at the site by the installer. Clean the surface with an industrial vacuum cleaner, tack or damp mop floor before application. Do not use sweeping compounds as most will contain oil or wax which will act as an anti-adherent and prevent primers, sealers, leveling compounds, coatings and/or adhesives from bonding to the concrete. Cracks and gaps must be treated prior to application of primers, sealers, leveling compounds, coatings and/or adhesives (for details see Technical Information #19 @
Mixing of Components
Lid contains hardener. Pierce all the way through plastic disc in center of lid and the bottom of the lid using a long screwdriver or similar tool. Let the hardener flow into the lower part of the bucket for one minute. All of the hardener must drain into the pail before mixing parts A&B. Open ring, remove the lid and mix both components with mixing paddle for at least 3 minutes. Use an electric drill with less than 300 rpm until an even color is reached. Avoid air entrapment by mixing slowly and using an appropriate mixing paddle. Make sure to mix along wall and bottom-part of the container as well. Temperature of both components should be at least 50 °F before mixing.
Installation Procedure
Mix pail according to mixing instructions. Apply coating undiluted with approved applicator. Make sure coating is spread evenly and up to the perimeters. The spread rate is critical for a successful installation. Do not exceed the minimum or maximum coverage.
Sub floor temperatures between 32 and 50 °F (0 and 10 °C) will dramatically increase drying time up to 24 hours. Never install product when sub floor temperature is below freezing or if condensation could occur on the sub floor within 24 hours after application.
When using other than STAUF products in conjunction with STAUF primers, sealers, leveling compounds, or adhesives, STAUF denies any and all responsibility for any ensuing problems and/or damages without prior written authorization from STAUF.
In case of accident, injury, spill or exposure, see SDS sheet for information. Consult technical data sheet at for updated information.
The foregoing representations are based on the results of our most current product and material testing within a controlled environment and are of a non-obligatory advisory nature only. As such, they do not constitute an express or implied warranty of any kind including the Warranty of Merchantability and/or Fitness for a Particular Purpose. Because we have no control over the actual quality of workmanship, materials used and worksite conditions, STAUF USA, LLC. will in no event be liable for any incidental and/or consequential damages. herefore, we strongly recommend that prior on-site testing be conducted to refer to and study the suitability of the product for the intended purpose. With the release of this technical information sheet all its prior versions become invalid. For warranty and warranty disclaimer information please see our Limited Lifetime Warranty @
General Features
  • seals slabs with any moisture content
  • works under any type of flooring
  • contains no water
  • contains no chlorinated solvents
  • contains no solvents
  • contains no VOC (calc. per CA Rule 1168)
  • high solids content
  • ozone friendly
  • Freeze/thaw stable
Installation Features
  • low odor
  • high spread rate
  • excellent penetration of sub floor
  • higher temp & RH will shorten drying time
  • observe pot life during installation
Long Term Features
  • resistant against aging
  • improves bonding of STAUF urethane based adhesives
  • improves bonding of STAUF polymer adhesives
  • moisture barrier up to 18# or 97% RH w/roller
  • moisture barrier up to 25# or 100% RH using XBL10
  • suitable for radiant heat systems
Viscosity [cps]
  • A:1500-2300 B:400-600 Mix: 2000
Abrasion Resistence (CS-17, 1000g, 1000cycles) [mg]
  • 70
Dry Film Thickness [mil]
  • 3 (plus sand and flakes)
Bond Strength [psi]
  • >300
Approved Sub Floors
  • Concrete Slabs
  • Felt backed Sheet Vinyl (well bonded, sanded, asbestos-free)
  • Ceramic Tiles
  • Stone, Terrazzo
  • Cured Leveling Compounds
  • Radiant Heated Sub Floors
  • Drywall
  • Plaster
  • Stained Concretes (well bonded)
Approved Trowels and Spread Rate
  • 1/8" Short Nap Roller: up to 500 SF/gal.
  • 3/8" Medium Nap Roller: up to 200 SF/gal.
Drying Time
  • approx. 1 hour
Temperature Range during Installation
  • 50-90F
Relative Humidity Range during Installation
  • 30% - 80%
Packing Size
  • 2 gal. Plastic Combo Pail (A+B)
Density [lbs./gal.]
  • A:12.0 B:9.4 Mix:11.3
  • White
Color Hardener
  • clear
Mixing Ratio
  • 5 Parts A + 2 Parts B by weight
Pot Life
  • approx. 25 min @ 70 F (21 C)
pH value of concrete
  • resistent up to 14
  • above 14 F
Shelf Life
  • 24 Months in original, unopened container
Revision: 2017-07-26 17:15:04

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