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UR2550 PRODUCT DATA

Tough Stuff UR2550 is designed as a quick setting base coat for use under the Tough Stuff Roofing Systems. It can be used for high build extended applications.

RECOMMENDED USES

PRODUCT CHARACTERISTICS

APPLICATION CONDITIONS
APPLICATION PROCEDURES
PERFORMANCE TIPS
CLEANUP INSTRUCTIONS
SAFETY PRECAUTIONS

ORDERING INFORMATION

RELATED DOCUMENTS


RECOMMENDED USESup.gif

  • Setting polyester liner

  • Filling rough areas

  • As a base coat under the Tough Stuff urethanes

PRODUCT CHARACTERISTICSup.gif

    Color: Black
    Solids by Weight: 96%
    Volume Solids: 85%
    Viscosity: 2,000-3,500 cps
    Weight per Gallon: 8.0 pounds
    VOC (EPA method 24): 100 grams/liter
    Shelf Life: 6 months in sealed containers
    Cleanup: Xylene / mineral spirits
    Flammability: Combustible

Spreading Rate per coat:

    Flat: 66 square feet/gallon/coat
    Vertical: 100 square feet/gallon - multiple coats

Heavy applications will self level.

Drying Schedule @ 66 square feet/gallon:

dot.gif 50 °F 77 °F 100 °F
To Touch 90 mins. 65 mins. 30 mins.
To Tack 6 hrs. 3 hrs. 2 hrs.
To Cure 48 hrs. 36 hrs. 24 hrs.
Drying time is temperature, humidity, and film thickness dependent.

PERFORMANCE CHARACTERISTICSup.gif

PHYSICAL
PROPERTY
 ASTM
TEST
METHOD
 TYPICAL
VALUE
Density (pcf) D 412 60.86
Tensile Strength D 412 300 psi
Tear Resistance D 1004 30 psi
Elongation D 882 378%
Shore A Hardness
(inst-5 sec.)		 D 471 35-45
Peel Adhesion C 794 10 lbs./in.
Water Absorption (% weight gain) D 471 0.31
Adhesion (psi)
Cement
Urethane Foam*
EPS*
Plywood

*Failure in substrate		 ELCOMETER
57.7
13.3
26.0
47.0
Dimensional Stability (% )
Length
Width
Thickness
 E 96 (1 hr. @ 212°F)
0.1
0.3
3.5
Permeability to Water Vapor E 96 (at 100°F) 0.04
Softening Point B 36 325
Pot Life Brookfield RVS, #6 Spindle @
10 RPM @ 77°F in minutes		 30 min.

APPLICATION CONDITIONSup.gif

Temperature:

Air & Surface: 32°F minimum / 100°F maximum
Material: 50°F minimum / 95°F maximum

Relative Humidity:

Can be applied at relative humidities up to 97%

APPLICATION PROCEDURESup.gif

BRUSH

  • Use nylon or polyester brushes, do not over brush or apply too heavily.

  • Heavy applications will slump on vertical surfaces.

SQUEEGEE

  • Pour material out into a puddle and pull with the appropriate notched squeegee. 1/8" notch will yield approx. 1.5 gallons/100 square feet and the 3/16" notch will yield approx 2 gallons/100 square feet.

  • After pulling with the squeegee, the material will have to be back rolled with a enamel short nap roller for uniform appearance. Cross hatch subsequent applications perpendicular to the previous layer.

ROLLERS

  • Use 12, 18, or 24" rollers for back-rolling large areas. Use 1/4-1/2" nap high-grade synthetic heads with phenolic cores.

  • Rapid rolling will splatter and may become airborne on higher buildings.

SPRAY-AIRLESS (for high volume)

  • UR2550 two component material is best applied by airless spray with a siphon feed hopper or a Bink’s Hawk air-assisted spray system.

  • System will have to be purged with solvent after every 4-5 kits are sprayed to prevent equipment problems.

  • Keep material above 50ºF prior to catalyzing in cold temperatures.

    Pressure: 3,000-4,000 psi 2-3 gallons/minute
    Tip: 5.37 to 6.56 reversible
    Gun: Mastic or high volume heavy duty guns
    Line: 1/2" solvent resistant or 1/2" double braid hydraulic

Please consult the Coatings International Technical Department with application questions.

PERFORMANCE TIPSup.gif

  • DO NOT THIN

  • POWER MIX BEFORE USING

RECOAT WINDOW

  • Maximum intercoat bond for the UR2550 is within 48 hours. Work should be scheduled to be started and finished within this time frame. This is especially important in areas of submersion.

  • Cold temperature applications can have curing accelerated with the TBA activator. Add 1/2 ounce per 5 gallons after mixing part A and B.

  • Damp conditions or water will foam the material. Do not apply if rain is immanent before proper film set can be established.

CLEANUP INSTRUCTIONSup.gif

  • Clean spills and spatters and tools immediately with mineral spirits or Xylene.

  • Clean hands immediately after use with hand cleaner that works on asphalt or oils.

  • After cleaning, flush spray equipment with xylene or mineral spirits. UR2550 must be flushed in standard spray equipment within 35 minutes.

SAFETY PRECAUTIONSup.gif

  • INSTALLERS must read and understand all technical and informational literature for Tough Stuff UR2550, including the Material Safety Data Sheets, prior to using this product.

  • For chemical emergencies, spills, leaks, exposure, or accidents in the U.S.: CALL CHEMTREC 24 HOURS A DAY / 365 DAYS A YEAR 1-800-424-9300.

ORDERING INFORMATIONup.gif

dot.gif Container Size Weight Class
Part A 4.5 gal. cans 40 pounds 55
Part B .5 gal./unit 5 pounds 55
(contains MDI isocyanate - store away from food)

D.O.T. Shipping Classification:

(UR2550 part A): Nonhazardous
(UR2550 part B): UN2489 III

HMIS:

Health 2, Flammability 3, Reactivity 0, Protection B

Published technical data and instructions are subject to change without notice. Please contact your Coatings International Roofing Systems representative for the most current information.

Revised May 2000

FOR ADDITIONAL INFORMATION, GO TO:up.gif

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