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. ALEX PLUS is paintable with latex or oil-based paints. It won't shine through or discolor paint finish for superior paint results. It is easy to apply and tool, low in odor and cleans up easily with water.