Two bathroom chalks are best, but each have a disadvantage
Q. We clipped your column titled " Silicone caulk doesn 't stand up to polyurethane," knowing that we would need the product you recommended Sikaflex-1a which we couldn't find at Home Depot or any local supply houses . And since our clipping is missing the bottom of the column, we can't make out the other product you recommended. We intend to use it in our shower to caulk where the wall tile meets the shower base.
A. The best answer to your question is a reprint of my advice regarding my experience with bathroom caulks: Over the years, I have been asked many times what is the best caulk to use to seal the joint of a bathtub and the wall above it. For years, I had been recommending Sikaflex- 1a polyurethane caulking , which I have been using in construction and home maintenance since the 1950s. A couple of years ago, I experimented with a different caulking, because several readers wrote to tell me that Sikaflex-1a was turning pink or yellow. I tried DAP Kwik ...