GEMCOAT Mold-Resistant Coating Additive™

A coating additive for use with our GEMCOAT™ concrete sealers. When applied to concrete masonry units, this coating creates an anti-microbial film that will help inhibit the growth of bacteria, mold, and mildew on the coating.

Available by special order. Lead times may apply.

Two Versions Available:

Gemcoat Mold Resistant Coating Additive

Solvent-based formulation (for mixing with GEMCOAT)

Gemcoat-WB Mold Resistant Coating Additive

Water-based formulation (for mixing with GEMCOAT-WB™)


1. Add 1 fl oz of agent per 1 gal. of GEMCOAT sealer.
2. Mix well.

Available in 5 fl oz containers.