B&T uses a Brewer Cote® sand and sealer mix. Ultraviolet rays and water penetration damage the binder that holds asphalt together. Regular asphalt sealer prevents this damage from occurring and protects your investment. Sealer also helps maintain the rich, black color of asphalt keeping it beautiful and new. B&T recommends sealing asphalt every 2 to 3 years for low traffic areas and every 2 years for high traffic areas.