A premium-grade, superior polymer formula that offers unbeatable adhesion to wood, vinyl siding, masonry, PVC, fiber-cement siding/trim and most common building materials. It can be extruded in low temperatures, remains permanently flexible with zero shrinkage, adheres well to damp surfaces and provides a weatherproof seal against the elements. Available in over 200 colors, WeatherMaster matches today’s most popular siding colors, regardless of the material or manufacturer.