281 TUB CAULK, WHT 2.8oz | The combination of speed, durability and protection is of the utmost importance to consumers and pros alike. GE Silicone II caulks deliver on all three, including protection from mold and mildew. GE Silicone II caulks remain permanently flexible, stretching and moving with a house as it settles and will never break down due to extreme weather conditions.