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Technical Data Sheet (TDS)

ERP-Kit for Concrete Testing

Test Kit prior to application of ERP-270

Special features

  • complete kit for concrete testing

Product Description
This kit is designed to test jobsite conditions of concrete subfloors that would not require shot blasting. If the concrete fails this test, then shot blasting will be required before applying ERP-270. Evaluate jobsite and calculate how many test areas are required. It is recommended one test be performed per 5,000 SF of flooring. At least one test must be performed on each floor of a multi-story building or each site of a multiple slab project. If concrete shows different colors or shade characteristics then it is recommended to perform at least one test for each area. All tests should be performed AFTER all necessary sub floor preparations such as wire brushing, sanding, grinding, vacuuming etc. have been performed. All dust, paint, or other surface pollutions must be removed by suitable means prior to test. Do not treat test areas any different than you would do the rest of the jobsite.
Pre-Installation Checklist
A successful installation requires proper preparation of the sub floor. Read and understand all applicable guidelines and technical data sheets before installation. Follow industry standards and flooring manufacturer's recommendations for sub floor moisture content, design, layout and application of flooring materials. All slab constructions must meet the specific requirements of the floor covering to be installed.
Sub Floor Examination
Do not apply sealer onto a visibly damp or wet surface. Examine concrete sub floor for color, cleanliness, porosity and pre-existing residues PRIOR TO installation (for details see Technical Information #18 @ Concrete sub floors must be checked for any contaminants and/or anti-adherents using the STAUF Epoxy Test Kit (for details see Technical Information #16 @
Prior to installation, the sub floor must be checked according to applicable installation guidelines. It must be solid and sound, clean, free of chaps and anti-adherents, as well as resistant to pressure and tension. Check for missing or compromised vapor barriers and hydrostatic pressure. Perform RH or CaCl moisture tests following ASTM standards. Results of 99% RH or 25# CaCl could indicate that there is a higher moisture content in the slab than what tests can measure and there might be hydrostatic pressure and/or a compromised or missing vapor barrier.
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
Pierce through lid and bottom of the upper part of the bucket using a screw driver or similar tool. Let the hardener flow into the lower part of the bucket for about 1 minute. Remove ring and the upper part of the pail and mix both components well using stirrer provided until color is uniform. Mix for at least three minutes. 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. Pour mixture on chosen test spots immediately to prevent sealer from heating up and drying in the pail. Failure to use entire contents of pail within 20 minutes will result in the material hardening to a solid in the pail and will become very hot.
Installation Procedure
Absorption test: Shake bottle before each use. Place a few drops of absorption liquid on the surface of the concrete and observe the time it takes for the liquid to be absorbed into the concrete. If the liquid is absorbed into the concrete in less than one minute the slab is absorbent and further testing is only necessary if the slab was poured more than one year ago. If the liquid is still unchanged after one minute the concrete is non-absorbent which could be caused by sealers, adhesives, curing compounds or other contaminants. Proceed with epoxy pull test.
Test Site preparation: Pour thoroughly mixed content on to concrete into an 8? puddle on the sites to be tested (up to 5 sites per kit). Wait about 15 minutes to allow the sealer to spread to about 12? diameter, then set 5 pieces of the wood fillets into the puddle with half the wood into the edge of the puddle and half of the wood over dry concrete. Place the wood fillets in a wagon wheel pattern. Once test site is completed, immediately move to next test site and repeat as needed. Do not reseal pail once mixed.
Perform pull test: Allow sealer to dry and cure for 72 hours. Using a hammer and screwdriver or prybar, pry up the fillets on the outer edge over dry concrete until separation occurs. Good bond is when wood splits leaving part of wood fillet in ERP-270 still adhered to concrete (B) or if sealer separates from concrete but shows some concrete removed with floor (A). Failed bond is when sealer separates from concrete with no large concrete particles attached (C). This would indicate that more sub floor preparation is necessary. Take pictures of each test site after pulling up the fillets with the fillets being turned over and placed next to where the fillets were removed.
Do not dilute primer/sealer or mix with other products.
Sealer will not prevent moisture damages from hydrostatic pressure, missing or compromised vapor barriers, underground springs, damaged water pipes, sinks, icemakers, faulty plumbing, flooding, etc.
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
  • contains no isocyanates
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
Approved Sub Floors
  • Concrete Slabs
  • Felt backed Sheet Vinyl (well bonded, sanded, asbestos-free)
  • Ceramic Tiles
  • Stone, Terrazzo
  • Radiant Heated Sub Floors
  • Wet Concrete Slab up to 25#/24hrs/1,000SF and 100% RH
Temperature Range during Installation
  • 50-90F
Relative Humidity Range during Installation
  • 30% - 80%
Packing Size
  • 1 quart Metal Can
  • 12 count Case
Density [lbs./gal.]
  • 8.9
  • clear
Color Hardener
  • Yellow
Mixing Ratio
  • 2 Parts A + 1 Part 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: 2015-10-06 12:45:01

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