Dap Alex Plus All Purpose Acrylic Latex Caulk Plus Silicone is an excellent quality, all purpose caulk for sealing a wide variety of interior and exterior surfaces It contains silicone additives for greater flexibility and adhesion and shrinks less for a durable, waterproof seal Ideal for caulking and sealing window & door frames, baseboards, pipes & vent, Other gaps & cracks, molding & trim, siding and trim and corner Joints