Smith’s Epoxy MAC100 is a solvent free, 2-component 100% solids Osmotic Moisture Vapor / Alkalinity Control Epoxy Primer with high capillary penetration capabilities for absorption into porous substrates at all recommended application temperatures. Epoxy MAC100 suppresses Osmotic moisture vapor transmission levels to an acceptable level (i.e. below 3 lbs. at tested rates up to 25 lbs./14 pH per ASTM F1869 or 100% RH per ASTM F2170) to receive subsequent systems. 

For use as a primer prior to all common traditional flooring, cementitious overlay/underlayment and resinous floor coating interior applications. 

Bonds to a variety of substrates, including but not limited to properly prepared, well bonded/sound/solid:

• Concrete
• Ceramic/Porcelain/Quarry Tile
• Metal (i.e. Aluminum, Copper, Steel, Zinc, etc.)

Always moisture test to determine proper primer thickness necessary for conditions.

Requires a minimum CSP 3 to properly adhere to concrete with elevated moisture vapor.  Diamond grinding does not exceed CSP 2 and is therefore unacceptable for moisture vapor remediation.