Before you can put a bead of nice, fresh caulk around your bathtub or window, you need to remove entirely the bad old stuff. Here’s how. Clean the surface using alcohol. Then kill any mold or mildew with a mixture of 1/3 cup bleach to 1 gallon of water. Allow to completely air dry (again, patience) before applying new caulk. TIP: If you’re planning to re-caulk a tiled shower or bathtub wall, deep clean the tile before you remove the old caulk. Easily remove silicone caulk without chemicals by using the same tool as your hair Homax Caulk Tool; Bowl to collect the old caulk; These Amazon links help I sincerely doubt this temperature will ruin a plastic tub or shower but be very Three Methods:Making the Old Caulk Easier to RemoveGetting Rid of the Old. What type of cleaner is best to remove silicone caulk from tub areas? How to Remove Caulk. When caulk has lost its effectiveness, it needs to be replaced. Before you can apply new caulk, though, you’ll need to remove the old stuff Before applying new caulk around the seams of your bathtub, it’s critical to remove the old latex or silicone caulk and to clean the surfaces. Then simply scrape the old caulk away. Step 1: Apply the remover. Photo 1. Spread a wide bead of caulk remover along the caulk line, covering it completely. Step 2: Scrape out the caulk. Photo 2. Remove the loosened caulk with a putty knife, pulling it out from the gap between the tile and the tub. The surface of the tile is durable, but the old caulk needs to be removed completely from the Learn how to remove and re-caulk around your tub like a real pro. Below are some of the most common mistakes to avoid when caulking around your home. Select the Right Use a razor blade first to remove the old caulk. scraping caulk from around perimeter of old bath tub with painting 5 in 1 tool a shallow angle to avoid scratching the surface, and remove any remaining caulk. Before you can add new caulk to the tub, you need to get rid of the old. Here are our best tips for removing old caulk from your bathroom.