How to Clean and Caulk New Windows

Once new windows are installed, it is time to clean and caulk them. Cleaning the windows will remove scuffs mars and fingerprints leftover from the installation process. The caulk provides a seal around the windows to prevent air exchange and help lower your energy bill.

Items Needed:

• Lacquer thinner


• Dust-free cloth


• Silicone caulk canister


• Caulk gun


• Household window cleaner


• Caulking tool

1. Clean the window frame with by pouring a small amount of lacquer thinner onto a lint-free cloth and rubbing until any scratches or scuffs have been removed.

2. Choose a low-modulus silicone caulk for the perimeter of the windows. You will want choose a caulk that has a long warranty and matches the color of the windows. Some types of caulk are not compatible with all types of windows so it is important to consult the manufacturer’s instructions to ensure your calk is compatible with your windows.

3. Insert the calk canister into the caulk dispenser gun. Cut the tip of the canister and pump the trigger a few times until the calk reaches the tip of the canister.

4. Apply an even bead of caulk around the perimeter of the window. Be careful not to get the caulk onto the glass of the window or onto your skin because it may be quite difficult to remove it.

5. Use a plastic or wooden caulking tool to smooth out any uneven sections of calk. You can also use your fingers to smooth out the calk, but it is recommended to only use your finger if you are wearing latex gloves to protect your skin from the caulk.

6. Clean off any smudges or fingerprints on the glass of the window by using a lint-free cloth and any household window cleaner

7. Repeat these steps for caulking and cleaning the interior and exterior of the windows.