WC-5 is a heavy-bodied, water based, vinyl-acrylic mastic for use over all types of insulation systems, both indoors and outdoors. It can also be applied as a general purpose elastomeric protective coating over masonry surfaces and a variety of other substrates. NOTE: Special care should be taken when applying WC-5 the foil facing on insulation as it will not always bond tightly, depending on the type of foil. Test applications are recommended.

WC-5 is formulated for easy application by brush, but can also be applied by trowel, or spray (application method should be specified when ordering). After drying, it becomes a tough, flexible, color retentive coating which is resistant to weather, alkalis, oil, grease, moisture, and mechanical damage. Its normal recommended dry thickness for full-scale outdoor protection is 1/16" (63 mils). A minimum dry film thickness of 40 mils is recommended. WC-5 should not be applied where it will be subjected to continual standing water.

WC-5 must be protected from freezing during storage, and, after application, from precipitation, freezing, and foot traffic until thoroughly cured.

WC-5 is a breathing-type mastic which allows water vapor to pass through it. This is a benefit because residual water trapped underneath the coating is allowed to escape in the form of water vapor. WC-5 should not be used over a low temperature system unless a vapor barrier is present.

"WC-5 CONTAINS NO ASBESTOS, LEAD, MERCURY COMPOUNDS OR ANY HAZARDOUD INGREDIENTS"

DO NOT THIN
The addition of water to this product will change its physical properties and will adversely affect its performance. No expressed or implied warranty will be offered on applications where the product has been thinned or altered in any way.