Pentra-Guard® (EXT) is an eco-friendly, exterior sealer for concrete, masonry and stone surfaces. It seals and protects against dirt, grime, salt and oil damage while enhancing the natural color and shine. This treatment creates a breathable, protective clear coat that is abrasion resistant and will not flake or peel. Pentra-Guard® (EXT) cures quickly and provides a hard, glossy, wet look finish to any exterior cementitious surface. This lithium-based solution is VOC compliant and easy to apply.