Answer
Jan 07, 2025 - 11:54 AM
GBS Penetrating Concrete Sealer is considered "breathable." This product can be used on lime mortar and historic brick provided it meets the following criteria - Porous, Clean and Dry, Free of any other sealers, coatings, or stamped concrete release agents, and Neutral pH (between 7 and 9). GBS Penetrating Concrete Sealer requires multiple applications and Application Instructions can be found on our website by Expanding Specs for this product.
