SB 2444 Penetrating Oil & Stain Repellent is a water-based formula of fluorinated materials and binding agents. This unique penetrating repellent is designed to provide the highest degree of oil and stain repellency expected from fluorocarbons but avoids the poor durability often associated with these materials. On porous masonry surfaces, it penetrates to give protection without changing the surface appearance. This product is permeable to water vapor and can be used on both horizontal and vertic