XtraBond®50 is a premium grade multi-purpose siliconized acrylic latex sealant. The product is engineered to provide excellent adhesion to vinyl, aluminum, wood, sheet metal & most common building materials without need of a primer. The addition of a silicone polymer provides greater flexibility than other latex products. XtraBond®50 is ideal for use in the installation of windows & doors – as well as interior sealing of cultured marble and tile. Installers prefer it, because the product cures rapidly to form a durable tight bond. * Window & Door Approved * Cleans Up with Water * Excellent Flexibility * Mildew Resistant * Quick Curing * Paintable