Caulking outside windows requires proper preparation to ensure a weather-tight seal. Clean the area around the window to remove any dirt, debris, or old caulk. Use a utility knife to cut away old caulk. Apply a high-quality exterior caulk around the window frame, filling any gaps between the frame and the exterior wall. Smooth the caulk with a tool or your finger to ensure a good seal. Wipe away any excess caulk before it dries. Allow the caulk to cure fully according to the manufacturer's instructions for best results.

Caulking outside windows involves cleaning, removing old caulk, applying exterior caulk, and smoothing it. Allow it to cure fully to prevent drafts and weather damage.