WC-7 Ultra Finish is a special version of Vimasco’s WC-7 water-based, vinyl-acrylic, general-purpose mastic which has been formulated to match many of the newer types of facings now being used by insulation manufacturers. It is an excellent match to the new Knauf facing and also newer facings from Owens Corning and Johns Manville.
WC-7 Ultra Finish is a breathing type mastic and is formulated to provide maximum protection from weather and mechanical damage at an economical price.
WC-7 Ultra Finish is suitable for application by brush, trowel, or spray (application method should be specified when ordering). Its normal recommended dry thickness for full-scale outdoor protection is 1/16” (63mils), but it also provides excellent protection at thinner thicknesses. A minimum dry film thickness of 40 mils is recommended. When dry, it provides a tough, durable, flexible film which affords excellent protection from the elements, other sources of water, and mechanical abuse at a wide range of temperatures. It retains a slightly glossy sheen after drying though this can dull some after lengthy exposure to UV light.
WC-7 Ultra Finish should not be applied where it will be subjected to standing water or where the requirement is for a vapor barrier.
WC-7 Ultra Finish is resistant to fire, alkali, asphalts, salts, and mild acids and solvents. When properly applied and maintained, it will provide years of service life in a variety of environments. In most applications, the recommended dried film thickness for WC-7 Ultra Finish is 1/16”.
WC-7 Ultra Finish CONTAINS NO ASBESTOS, LEAD, OR MERCURY COMPOUNDS.
WC-7 Ultra Finish must be protected from freezing during storage. After application, until thoroughly cured, it must be protected from precipitation, freezing, oil, grease, and foot traffic.
When used on insulating cement, WC-7 Ultra Finish should not be applied until the cement has dried thoroughly.
