Acrylic, elastomeric roof sealant, high adhesion and elasticity, resistant to temperature changes and rainfall. Its whiteness significantly reduces the absorption of heat from the roof. For long-term durability, it is recommended instead of priming with the material itself diluted with water, to be pre-coated with DUROSTICK SOLVENT PRIMER, sealing in depth possible capillary cracks, as well as the porous points of the roof surface. Two coats crosswise with No39 are enough for complete and long-term sealing. It is classified as a concrete surface protector according to EN 1504-2.