11 Benefits SealTight Penetrating Clear Concrete Sealer Protects weak and old substrates. Prevents blistering and deterioration of paints does not contain oils or solvents. Does not require special protection. Safe for the user and environment. Non-corrosive, non-toxic and non-flammable. NOT classified as a hazardous material. Environmentally friendly. NO  bonding problems for paint, glue, render, ie. can paint … Continue reading 11 Benefits SealTight Penetrating Clear Concrete Sealer