GE Silicone II Paintable Silicone Caulk offers a combination of silicones superior performance & the paintability of acrylic caulk. Water protection is critical in many caulking applications from windows and doors to kitchens and baths. Many times these jobs require a caulk that is paintable as well as waterproof. Paintable Silicone combines the superior adhesion and durability performance of 100% silicone with the paintability of acrylic. While acrylic may be paintable, it breaks down in water over time and can shrink and crack, leaving gaps for water and air to seep through. Those leaks can lead to water damage, mold growth or higher energy bills. Issues such as these can translate into wasted energy, money, and ultimately time, when the project has to be redone.