Pentra-Shield® is an exterior concrete and masonry surface hardener and densifier that provides freeze-thaw, scaling and spalling protection. This treatment strengthens concrete sidewalks and driveways to minimize damage caused by winter weather. Pentra-Shield® is a penetrating, breathable solution that reduces moisture absorption and leaves no surface film or discoloration. It is a lithium-based solution, VOC compliant and easy to apply. Learn more with ATC today!