WC-1 is a heavy-bodied, water-based, breathing type mastic, for use as a protective coating over all types of insulation systems, both indoors and outdoors. WC-1 may also be successfully used on masonry surfaces and primed steel when a water-based coating is desired offering durability, weather protection, chemical and oil resistance, and beauty. In most applications, the recommended dried film thickness for WC-1 is 1/16”.
WC-1 is a thick, polyvinyl acetate emulsion which is suitable for application by trowel, palm, or spray (method of application should be specified when ordering).
Over properly designed insulation systems, WC1, after drying, becomes a tough, durable, flexible film which provides maximum protection at a wide range of temperatures. It should not be applied where it will be subjected to standing water.
WC-1 is suitable for application at ambient temperatures down to 40ºF (4ºC) and where the temperature is not expected to be below 35ºF (2ºC) for at least 24 hours after application.
WC-1 CONTAINS NO ASBESTOS LEAD, OR MERCURY COMPOUNDS
WC-1 must be protected from freezing during storage. After application until thoroughly cured, it must be protected from precipitation, freezing, oil, grease, and foot traffic.
WC-1 is USDA acceptable for use in meat, poultry, and food processing plants.
Product Information Data
COLOR
White, E2 Gray, Green, Blue, Black (Special colors available upon request)
FLAME SPREAD INDEX (ASTM E 84)
30 @ 1/16” dry thickness (1.59mm)
COVERAGE (ASTM C 461)
13sq. ft./gal. @ 1/8” wet (.32 m²/liter @ 3.17mm)
(Varies according to substrate)
WET FLAMMABILITY INFORMATION
No flash to boiling (212ºF) closed cup (ASTM D 93)
DRYING TIME (ASTM D 1640-69)
To touch: 2 hours Through: 12 to 48 hours (depending upon temperature, relative humidity and substrate)
CLEANUP
Wet state – water
Dry state – safety solvent
WEIGHT PER U.S. GALLON (ASTM D 1475)
10.2 pounds (1.22 kg/liter)
RECOMMENDED SHELF LIFE
18 months in unopened container at 40°F (4°C) to 90°F (32°C)
SOLIDS
52 ± 2% by volume
VOC (Volatile Organic content, less water) (ASTM D 3960)
MEETS REQUIREMENTS FOR LEED CREDIT 4.2
APPLICATION TEMPERATURE RANGE
40°F (4°C) to 110°F (43C)
CAUTION
Do not add water to this product as that will change its physical properties and performance. No expressed or implied warranty will be offered on applications where the product has been thinned or altered.
SERVICE TEMPERATURE RANGE
0ºF to 180ºF constant (-17.8ºC to 82.2ºC)
-20ºF to 200ºF intermittent (-29ºC to 93ºC)