Rust-Oleum OKON 5 gal. S-20 Penetrating Repellent Sealer

Rust-Oleum OKON 5 gal. S-20 Water-Repellent Sealer locks out water and its damaging effects on dense concrete and masonry. This silane/siloxane formula penetrates deeply to create a tough hydrophobic barrier against water invasions. Ready to use.