DAP ALEX PLUS All Purpose 10.1 Oz. White Siliconized Acrylic Latex Caulk 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, 100% waterproof seal. ALEX PLUS is paintable in just 30 minutes with latex or oil-based paints, saving time. It will not shine through or discolor paint finish for superior paint results. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.