Menu

PDF version

Technical Data Sheet (TDS)

MPB-821 Contractors Multipurpose Adhesive

Multipurpose Floor Covering Adhesive

Special features

  • General purpose adhesive for carpets with ActionBac®, latex foam, KangaBack®, jute and other carpet backings
  • Non-staining for felt-backed vinyl installation
  • Strong final bond and long working time for easy positioning
  • Meets all Low VOC Emission Standards

Product Description
MPB-821 Standard Floor Covering Adhesive is a 0 VOC, non-staining, latex-based adhesive, designed for the installation of glue-down carpets and felt-backed sheet vinyl. This non-flammable adhesive is protected by the CleanGuard® two-stage antimicrobial. CleanGuard® is a specifically formulated broad-spectrum, anti-microbial agent that protects our adhesives and sealers from microorganisms, such as mold or mildew, in both the wet and dry state. MPB-821 is recommended for use with the following carpet backings: woven polypropylene (ActionBac®), polyurethane foam, jute, rubber, and needlepunch. Due to its non-staining formula, MPB-821 can be used to install felt-backed sheet vinyl. NOTE: This adhesive is not recommended for pure vinyl backed sheet goods or vinyl backed carpets.
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
Prior to installation, the sub floor must be checked according to applicable installation guidelines. It must be solid and sound, flat, permanently dry, clean, free of chaps, indentations and anti-adherents, as well as resistant to pressure and tension. Moisture content of all floors must be measured before installation.
Moisture content in concrete sub floors must be below 3#/24h/1,000 sq. ft. using the Calcium Chloride Test or below 75% RH using an in-situ probe per ASTM F1869 and F2170.

Sub Floor Preparation
Depending on type and condition of sub floor, a mechanical treatment (e.g. mechanical brushing, grinding or sanding) may be required. Intensity of such work must be determined at the site by the installer. Dust, paint, residual adhesives or other surface contaminants must be removed by suitable means. Cleaning the surface with an industrial vacuum cleaner is recommended. Cracks and gaps must be filled with concrete crack filler unless they are expansion joints. Level when necessary to 3/16 inches within 10 feet. Heated sub floors must be primed.
Installation Procedure
Spread the adhesive with the appropriate notched trowel. Avoid excessive adhesive thickness by passing the trowel evenly through the adhesive at a 45 degree angle. Observe the appropriate flash time (if applicable). Lay the flooring into the adhesive, correctly position it and press down firmly. Be sure to check the back of the flooring to make certain good adhesive transfer from sub floor to flooring is achieved. Roll flooring approx. 15-30 min after installation with a 50# roller for carpet and 75-100# roller for sheet vinyl if recommended by the flooring manufacturer. Push down raised edges approx. 30-60 min after installation.
Storage
Store and transport protected from freezing. Recommended minimum temperatures are 35 °F for transport and 40 °F for storage. Do not stir product if frozen, allow to thaw completely.
Limitations
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 www.staufusa.com 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 @ www.staufusa.com
General Features
  • LEED qualified
  • contains no VOC (calc. per CA Rule 1168)
  • nonflammable
  • dispersion base cleans with water
  • certified "green", CRI GLP
Installation Features
  • very low odor
  • cleans with warm water and soap
  • long open time
  • spreads easily
  • higher temp will shorten drying time
Long Term Features
  • resistant against aging
  • remains elastic
Approved Flooring
  • Carpet (attached cushion)
  • Carpet (felt, fiber, jute, woven vinyl)
  • Sheet Vinyl (felt backed)
Approved Sub Floors
  • Concrete Slabs
  • OSB (underlayment grade)
  • Plywood (underlayment grade)
  • Felt backed Sheet Vinyl (well bonded, sanded, asbestos-free)
  • Cured Leveling Compounds
  • Radiant Heated Sub Floors
  • VCT (well bonded, sanded, asbestos-free)
  • (do not install non-porous flooring over non-porous sub floors)
Flash Time (wet lay)
  • 15 - 30 min
Open Time (wet lay)
  • 30 - 40 min
Approved Primers
  • Primer is normally not required
  • STAUF AQP-200 Eco-Prime
Approved Sealers
  • STAUF ACS-210 True-Seal
Approved Leveling Compounds
  • STAUF SLC-540 Self Leveling Compound
  • STAUF QFF-560 Quick Feather Float
  • STAUF RLC-580 Fiber Level
Approved Trowels and Spread Rate
  • Woven Polypropylene-#7 (1/8"x1/8"x1/8" U notch): up to 100 SF/gal
  • Sheet Vinyl-#8 (1/16"x1/16"x1/16 └┘ notch): up to 150 SF/gal
  • Attached cushions-#15 (3/32"x3/32"x3/32" V notch): up to 130 SF/gal.
Cure Time until Normal Traffic
  • approx. 24 hours
Clean-Up
  • Use soap and water
Temperature Range during Installation
  • 50-90F
Relative Humidity Range during Installation
  • 30% - 80%
Packaging Size
  • 4 gal. Plastic Pail
  • 48 per pallet
  • Case of 4x1 gal Plastic Pails
  • 42 per pallet
Color
  • Cream
pH value of concrete
  • must be between 7 and 9
Transportation
  • above 35F (do not stir if frozen, allow to thaw completely)
Storage
  • above 40 F, protect from freezing
Shelf Life
  • 12 Months in original, unopened container
Revision: 2017-09-18 17:19:57

Please enter the email address of the person to whom you would like to send this PDF.