Dryvit NCB: Noncementitious Base Coat

Dryvit NCB is a fully formulated water-based acrylic product. It is a highly flexible and crack-resistant base and grout coat that is tintable to a wide variety of colors. Questions? Contact Us.

• NCB is used as a base coat to embed reinforcing mesh in a Dryvit system.
• NCB is used as the grout coat for with the Custom Brick Finish System.
• NCB is used as the base coat for re-skimming existing lamina during repair and remediation

Working Time: When the Dryvit NCB is contained in an open pail, there is no working time limit. Small amounts of water can be added continuously to the pail to adjust the workability. Partially used containers of NCB, when tightly sealed, may be used the next day.

Drying Time: NCB dries and develops physical properties by the evaporation of water. Drying time depends upon the air temperature, relative humidity and wind conditions. Under average drying conditions [70 °F (21 °C), 55% R.H.], NCB will be dry in 24 hours. Protect NCB from rain for at least 24 hours. Under adverse drying conditions (low temperature and high relative humidity), NCB should be protected until it is cured hard.

Testing Information: For individual test data on this product’s properties, refer to the chart included with this document.

Application Procedure: For complete application instructions, refer to the appropriate Dryvit system application instructions.

Job Conditions: Air and surface temperature for the application of the NCB material must be 40 °F (4 °C) or higher and must remain so for a minimum of 24 hours. When used as a grout coat for Custom Brick finishes, air and surface temperature must be 55 °F (13 °C) or higher and must remain so for a minimum of 24 hours.

Temporary Protection: Shall be provided at all times until the adhesive, base coat, finish and installation of permanent flashings, sealants, etc. are completed to protect the wall from inclement weather and other sources of damage.