Ultra Spec® Masonry Interior/Exterior 100% Acrylic Sealer is designed to penetrate and seal the surface of new or previously painted masonry surfaces providing the proper foundation for subsequent finish coats. It can be applied to masonry and plaster surfaces with pH levels as high as 13.

New masonry should cure for at least 30 days before sealing, although accelerated systems can be applied if pH levels allow. Recommended to test with a pH strip before using this product on new masonry and plaster surfaces.