Caulking windows is a simple process that can be completed in just a few minutes depending on the number of windows that need to be caulked. The items needed are caulk, tape, a caulking gun, a wire brush, a cloth and scissors.
Prepare the window surface
Using a cloth, wipe down the surfaces that will need to be caulked. This is important because loose particles and dirt can cause different types of sealing problems if they are present when the caulking takes place. Also, put down lines of tape to create a smooth edge where you will be caulking.
Cut the caulking tube
Examine the window to be caulked. Different types of windows require different bead sizes. Using your scissors, cut the nozzle with either a large hole for larger beads, or a narrow hole for smaller beads.
Apply the caulk
Squeeze the trigger of the caulking gun with even pressure to maintain a steady flow of caulk. Make sure that the nozzle follows any of the cracks or spaces that you want to fill inside of the window. After you have covered all of these cracks, immediately use your finger to smooth out the beads for a better aesthetic.