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MasterWeld 941 Indoor/Outdoor Polyurethane Rubber Flooring Adhesive - 5 Gallons – Ultimate RB Rubber (MASTERWELD-941)

5 Gallon Pail
Indoor/Outdoor Application
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SKU: 80CHE3941051
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MasterWeld 941 Rubber Flooring Adhesive - MasterWeld 941 (formerly Chemrex 941) is a liquid polyurethane based rubber flooring adhesive used for indoor and outdoor rubber flooring installations. It is most commonly used for rolled rubber in home gyms, fitness studios, commercial gyms and even doggy daycare facilities and dog kennels. MasterWeld 941 is a trowel grade adhesive that is applied with a trowel and has a spread rate of 75 square feet per gallon when used with a 1/16" V-notch trowel for rolled rubber. Liquid flooring adhesive can be applied to many different types of sub-floors including concrete, asphalt, plywood and over radiant heating systems. For outdoor installations, MasterWeld 941 is specially formulated to withstand unlimited freezing and thawing for optimal adhesion and durability in colder climates. This product is Volatile Organic Compounds (VOC) compliant, is non-flammable and contains no solvents or water. Need to order multiple pails? Contact an IRON COMPANY® flooring specialist today for the absolute best delivered pricing.

Need help selecting Rubber Flooring Adhesive for your flooring installation? Contact an IRON COMPANY® fitness flooring specialist today at 1-888-758-7527 or email

MasterWeld 941 Adhesive Features and Specifications:

  • Recommended for residential, light commercial and full commercial use
  • Volume per Pail: 5 gallons (18.9 L)
  • Color: Light brown
  • Odor: Extremely low odor perfect for occupied buildings
  • Uses: Indoor and outdoor. Has unlimited freeze-thaw stability
  • Substrate Applications: Trowel grade adhesive to be used on concrete, asphalt, rubber, cork, plywood, particle or chip board, gypsum underlayment and radiant heat flooring
  • Coverage: Coverage per gallon, or "spread rate", for rolled rubber is approx. 75 square feet when using a 1/16" V-notch trowel
  • Trowel: Recommended trowel size is 1/16" V-notch for rolled rubber and 1/32" for 4mm rubber underlayment
  • Compliance: VOC compliant, non-flammable and contains no solvents or water
  • Working Time: 45-60 minutes
  • Drying Time: Adhesive will fully bond in just over two hours if lightly misted with water that can cause wood surfaces to expand
  • Shelf Life: 9-months when stored at 75 degrees and 50% relative humidity
  • Clean-Up: Clean tools and excess immediately with mineral spirits
  • Country Of Origin: Made In USA
  • Government Purchase: Available for Government and Military purchase through GSA contract GS-07F-0104M and CMAS contract 4-12-78-0066A
  • Pail Dimensions: 12" L x 12" W x 14" H
  • Pail Weight: 60 lbs.
  • NOTE: Can only ship via standard Ground transportation (FAA regulations prohibit air shipment of adhesive compounds)

Click here to view the Masterweld 941 material safety data sheet (MSDS)

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MasterWeld 941 Indoor/Outdoor Polyurethane Rubber Flooring Adhesive - 5 Gallons – Ultimate RB Rubber (MASTERWELD-941)
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