Best Caulk. White caulk works the best for tubs and showers. Makita XGC01Z 18V Caulk and Adhesive Gun.
All in all my top recommendation for the best exterior caulk is the GE GE012A All Purpose Silicone 1 Sealant Caulk. 50 out of 5 stars Love it. GE GE500 Silicone II Window Door Caulk Best Silicone Sealant for Showers.
Benefits to polyurethane caulk are that it is tear resistant will stick to almost any surface and is non-corrosive as well.
50 out of 5 stars Love it. Alex Plus is one good choice but there are several others. Its paint friendly features easy cleanup with water and is resistant to ultraviolet light. Newborn 930-GTD Caulking Gun Best Seller 6.