A fast drying, multi-purpose, water-based exterior sealer based on styreneacrylic composition, specially designed for exterior wall foundations, as it acts as a primer to penetrate the pores on surfaces and polish them to prevent unwanted absorption, and prepares exterior surfaces to provide excellent primer and better adhesion for final painting layers. Used for priming and preparing of all types of external surfaces on cement, concrete surfaces, gypsum, plaster layers, tiles, bricks, fiberboards, etc.