Dryvit Systems Inc. has announced that its Backstop NT product is now approved for use on concrete and masonry substrates.

The product is a flexible, polymer-based, non-cementitious, weather-resistive membrane that prevents water penetration and eliminates air infiltration. Previously, Backstop was approved for use with core-treated exterior-grade gypsum sheathing, Dens-Glass Gold, exterior cement and calcium silicate sheathing and APA exterior-grade CD-X plywood.