UREA-TUFF 4290 is a high solids content, two component, liquid applied, aliphatic polyurea industrial maintenance coating. It can be used as a high solids top coat for most of the polyurea and polyurethane deck coating systems supplied by Tufflex International, Inc. (TUFFLEX INT’L).

Basic Uses: UREA-TUFF 4290 is the abrasion-resistant and weather resistant Top Coat used in the TUFFLEX INT’L Traffic Bearing and Roof Coating Systems where there is a requirement for a low VOC and fast curing top coat. Please refer to the pertinent Application Specification Data Sheet for application details on each of these systems.

UREA-TUFF 4290 is used where optimum weather resistance, abrasion resistance and color stability are required. It is used in conjunction with the UREA-TUFF 4260 & 4270 series Polyurea membranes.  The cured UREA-TUFF 4290 top coat easily withstands the extreme environmental conditions encountered in exterior construction environments. When used in conjunction with elastomeric base membranes, the UREA-TUFF 4290 composite systems are designed to handle freeze-thaw conditions and the substrate expansion and contraction which is typical during low temperature to high temperature thermal cycling.  UREA-TUFF 4290 may also be used alone as an abrasion-resisting maintenance coating.

Limitations: Containers of Part A (base resin) that have been opened must be used within 7 days, since the product is a moisture-reactive material that will set up when exposed to moisture in the air. Keep lid tightly sealed when material is not in use.

Shelf Life: Nine (9) months after manufacture when continuously stored indoors in unopened metal pails at temperatures under 80°F.

UREA-TUFF 4290 is available in several standard colors. Custom colors are available with a minimum batch size order of 200 gallons. Contact our Technical Service Department for further information.

Surface Preparation: All surfaces to be coated with UREA-TUFF 4290 must be thoroughly dry and free of all contaminants, including oxidation on old top coats or base coats as well as construction debris or deposits.

Application: Always stir thoroughly prior to use. UREA-TUFF 4290 is normally applied at a rate of 80-133 square feet per gallon, per coat, resulting in a film thickness of 12 to 20 wet mils.

Coverage will vary depending on the texture, aggregate size or degree of surface porosity. The larger the aggregate used, the lower will be the coverage due to the larger surface area of the aggregate. UREA-TUFF 4290 is easily applied by spray, roller, or notched trowel. Always follow by backrolling. At 50% relative humidity and 77°F, the coating will reach an initial set within 2 hours. Light traffic should not be allowed on the finished coating for 3-4 hours.

This product contains aliphatic isocyanates, low viscosity amine chain extenders and petroleum hydrocarbon solvents. Read the container-precautionary labels and Safety Data Sheet (SDS) carefully. Exposure to urethanes and petroleum solvents may cause allergic skin and respiratory reaction. Personnel applying coatings containing petroleum solvents and isocyanate prepolymers  should wear protective clothing, goggles and gloves and should use only with adequate ventilation and respiratory protective gear. Avoid contact of material with skin or eyes and avoid breathing vapors. Mix and apply only in well-ventilated areas. Read the appropriate SDS prior to handling the epoxy primers or the UREA-TUFF 4290 coating components. THIS PRODUCT IS FOR PROFESSIONAL USE ONLY.

If a UREA-TUFF 4290 coated surface is damaged, it can be repaired by light sanding or by scrubbing with a solution of TSP and water, followed by a thorough rinse with water. Allow to dry. Follow this with a solvent wipe with xylene or acetone mixed with TUFFLEX INT’L penetrating cleaning additive. When the surface is dry, apply UREA-TUFF 4290.

Tufflex International, Inc. (TUFFLEX INT’L) warrants this product to be free of defects in workmanship and materials only at the time of shipment from our factory. If any TUFFLEX INT’L materials prove to contain manufacturing defects that substantially affect their performance, TUFFLEX INT’L will, at its option, replace the materials or refund its purchase price.

This limited warranty is the only warranty extended by TUFFLEX INT’L with respect to its materials. There are no other warranties, including the implied warranties of merchantability and fitness for a particular purpose. TUFFLEX INT’L specifically disclaims liability for any incidental, consequential, or other damages, including but not limited to, loss of profits or damages to a structure or its contents, arising under any theory of law whatsoever.

The dollar value of TUFFLEX INT’L’s liability and buyer’s remedy under this limited warranty shall not exceed the purchase price of the TUFFLEX INT’L material in question.