Everbuild 175 Universal Acrylic Sealant is a high-quality, permanently flexible sealant that is ideal for both interior and exterior use. It adheres to virtually all surfaces, making it perfect for a wide variety of applications, such as sealing around windows and doors, filling cracks in brickwork and concrete, and bonding polystyrene coving and tiles. This white sealant is also overpaintable, so you can create a seamless finish.