RFM Tight Grip Adhesive 4 Gallon

$225.99 $250.99
Product Code:




  • Permanent, strong bond
  • Excellent green grab
  • Low VOCs


4 U.S. gals. (15,11 L)

Tight Grip is a single-component, solvent-free, polyurethane adhesive formulated to bond Rubber Floors & More recycled rubber flooring to a variety of substrates. Tight Grip has excellent initial green grab and develops a permanent bond while remaining flexible. It is suitable for the installation of all recycled rubber flooring.

 Uses: For bonding Rubber Floors & More recycled rubber flooring in glue-down installations and for glue-down underlayment’s. Note: If not used with Rubber Floors & More flooring products, always follow the flooring manufacturer’s installation instructions.

Substrates: Concrete; APA- or PS1-95-rated plywood; underlayment-grade-oriented strand board (lightly sanded); radiant-heated slabs; vinyl composition tile (well bonded, free of wax); acoustic cork underlayment; primed gypsum underlayment and terrazzo that are free of wax/sealers.

Recycled rubber substrates must be flooring/underlayment grade and recommended for the specific flooring that is being installed to the manufacturer’s specifications. Consult the flooring manufacturer’s installation instructions for specific recommendations.

 Preparation: Subfloors must be structurally sound, dry, smooth, flat, level to a tolerance not exceeding 3 mm in 3,05 m (1/8" in 10 linear feet) and free of excess moisture/alkali and all substances (oil, wax, grease, paint, oil-based sealers, adhesive residue, etc.) that might interfere with the bond of the adhesive. If existing concrete is too rough, or does not meet the above criteria, apply a cement-based leveling compound to smooth and level the surface. Follow all leveling compound manufacturers’ instructions. Expansion or other moving joints must not be filled or covered with flooring. 


  • Before installation, the substrate, flooring material and adhesive must be fully acclimated at the same temperature and humidity level expected during normal use – between 18°C to 35°C (65°F to 95°F) with a relative humidity (RH) of no greater than 85%.
  • Ensure that the moisture content of the substrate is within the flooring’s specified range. Do not install when the moisture vapor emission rate exceeds 3,63 kg per 92,9 m2 (8 lbs. per 1,000 sq. ft.) per 24 hours, when using the anhydrous calcium chloride test (ASTM F1869).
  • Do not install when the RH of the concrete slab exceeds 85% (ASTM F2170).
  • Do not use in areas subject to hydrostatic pressure.
  • Do not use on wet, dusty, contaminated or friable substrates.


General: Ensure adequate ventilation during flooring installation. Refer to flooring manufacture’s specific trowel recommendations for the flooring installation.

Physical Characteristics: (at 21°C [70°F] and a RH of 50%)

Note: Times will vary depending on temperature and humidity.

  • Open time: 0 minutes
  • Working time: 45 to 60 minutes
  • Adjustability time: Up to 2 hours
  • Cure time: 8 to 10 hours
  • This product does not require thinning.
  • Freeze-thaw stable
  • Shelf life: 1 year in unopened container



Before starting the installation, read flooring manufacture’s Installation Guidelines for the specified product; acclimation and dry lay are essential for a successful installation.

 Refer to flooring manufacture’s specific recommendations and industry standards. Large temperature or humidity fluctuations can affect the flooring and performance of the installation.

 Apply adhesive to the substrate with a 1,6 x 1,6 x 1,6 mm (1/16" x 1/16" x 1/16") V-notch trowel. Immediately install flooring into wet adhesive. Ensure 100% transfer of adhesive to the substrate and the flooring backing. In cases where other trades may access the installation area, the use of Masonite board or plywood should be used to protect the rubber flooring from damage and debris. Rubber Floors & More is not responsible for any product failure if proper floor preparation and/or installation procedures are not followed.

 After installation, restrict foot traffic and moving of heavy objects for 24 to 48 hours to allow adhesive to cure properly. Premature traffic can cause installation failure. The higher the temperature and the higher the humidity, the faster the adhesive will cure.

 Cleanup: Clean any fresh adhesive from the surface flooring immediately with a urethane adhesive remover. Use adhesive remover sparingly. Always test on a scrap of flooring material before using on an installed floor to ensure that the cleaner will not damage the surface. Do not use mineral spirits on Rubber Floors & More recycled rubber flooring.