Monday-Friday | 8:00 am – 5:00 pm (EST)
Sto Americas Headquarters
3800 Camp Creek Parkway SW
Building 1400 • Suite 120
Atlanta, Georgia 30331 USA
Phone (800) 221-2397 – Fax (404) 346-3119
StoPowerwall®ExtraSeal is a direct-applied stucco system to CMU wall construction with excellent air and moisture protection using StoGuard®.
Sto ExtaSeal is designed for use as an air barrier, moisture barrier, and stucco scratch coat on prepared concrete and CMU beneath StoPowerwall Stucco (ICC ESR 2323) or any other ASTM C 926 compliant stucco brown coat.