Mapei Ultrabond Sport PU 1K - Rubber Flooring Adhesive
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Mapei Ultrabond Sport PU 1K - Rubber Flooring Adhesive
Mapei Ultrabond Sport PU 1K is a high-performance, one-component urethane adhesive specially designed for bonding reground rubber flooring in both indoor and outdoor settings. With its fast-setting formula, it delivers excellent early tack and green strength to keep seams tight during installation. This ready-to-use adhesive ensures a long-lasting, durable bond on a wide range of approved substrates. Trusted by professionals, Mapei Rubber Flooring Adhesive makes rubber floor installation easier, cleaner, and more reliable.
Features
- Early tack for easy installation
- Extremely strong bond for long-lasting results
- Highly moisture resistant
- Compatible with many substrates
- Indoor and outdoor compatible
- Low VOCs
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Specs
Specs
| Size | 1 bucket (4 gallons) |
| Square Footage | 360-480 sq ft (1/16" square-notch trowel) - 5mm, 10mm, and 12mm UnderBlock |
| Substrates | Fully Cured Concrete, Resilient Flooring, Ceramic/Porcelain Tile, Terrazzo, Exterior-Grade Plywood |
| Color | Dark Grey |
| Recommended Application | UnderBlockâ„¢ Rubber Underlayment, The Stomp Rollâ„¢ |
Material Testing
Material Testing
| Tested Properties | Performance |
| Total Solids | 100% |
| Dry Time | 45 minutes (depends on temp and humidity) |
| Storage Temperature | 65-80°F |
| California VOC Compliant | Compliant with SCAQMD 1168 Rule (<40g/L) |
| Shelf Life | 1 year unopened |
Installation Instructions
Installation Instructions
Application Properties
at 73°F (23°C) and 50% RH
| Flash Time* | 0 to 10 minutes |
| Working Time** | 20 to 30 minutes |
| Adjustability Time*** | 30 to 45 minutes |
* Flash time is the recommended amount of time for a freshly applied adhesive to remain exposed to the air before the installation of a floor or wall covering.
** Working time is the maximum amount of time that an adhesive can remain exposed to the air and still effectively bond to the floor or wall covering.
*** Adjustability time is the window of time when adjustments can still be made to the position of the floor or wall covering without compromising the bond of the adhesive.
Flash time, working time and adjustability time vary based on temperature, humidity, substrate porosity and job site conditions.
Install Instructions
- Prepare all substrates according to flooring manufacturer's guidelines and select the appropriately notched trowel according to the "Approximate Coverage" chart below.
- Key the adhesive into the surface of the substrate using the flat side of chosen trowel.
- Spread adhesive evenly over the subfloor, keeping the trowel at a 45-degree angle to the surface.
- Do not spread more adhesive than can be covered with floor covering within 30 minutes.
- After spreading the adhesive, immediately install the flooring material into the adhesive while it is still fresh.
- Periodically lift the material to confirm more than 90% adhesive transfer to the backing.
- Roll the flooring surface across the width and length with the manufacturer’s recommended roller to break down adhesive ridges and to ensure complete removal of trapped air.
- Pull (rather than push) the roller, so that footprints are not left on the floor.
- Complete the installation per the flooring manufacturer’s instructions.
Trowel Recommendation for Approximate Coverage
| Typical Trowel | Coverage | Product Application |
| 1/16" x 1/16" x 1/16", square-notch | 90 to 120 sq. ft. per U.S. gal. | 5mm, 10mm, and 12mm UnderBlock |
| 1/8" x 1/8" x 1/8", U-notch | 50 to 60 sq. ft. per U.S. gal. | 2mm UnderBlock |
Trowel dimensions are depth/width/space. Coverage shown is for estimating purposes only. Actual job site coverage may vary according to substrate conditions, type of trowel used and setting practices.
Common Product Uses
Common Product Uses
- Use with any rubber floor soundproofing material.
- Professional, recreational, and educational fitness centers.
- Gymnastics training and competition gymnasiums.
- Any commercial or residential use of The Stomp Roll rubber sports flooring or UnderBlock rubber underlayment.
- Useable with fully cured concrete, existing, bonded resilient flooring, ceramic and porcelain tile, cement terrazzo, exterior-grade plywood.
Resources
Installation Guides
Spec Sheets
