How to Properly Apply Caulking: A Quick Guide 1. Prepare the Surface:Clean the joint from dust, dirt, and old caulking. Degrease the area and apply painter’s tape along the edges for clean lines. 🧹 2. Open the Caulking Tube:Cut the nozzle at a 45° angle to match the joint width. Puncture the inner seal using a pin or the tool on your caulking gun. ✂️ 3. Load the Tube:Place the tube into the caulking gun and secure it properly. 🔧 4. Apply the Caulking:Squeeze the trigger evenly to fill the join