The Permaguard sealer from Cyntech protects concrete, brick, and stone surfaces while improving their natural appearance. It is water, acrylic and urethane based and is ideal for interior use since it does not have a strong solvent odour. Also, it has a very low content of volatile organic compound (VOC), making it an environment-friendly product. It resists strongly to water, sun, de-icing salts, motor oil and various other chemicals, allowing its use on exterior surfaces. The product will not whiten under water and will dry rapidly under normal application conditions. 3.78 L package.