How to Repair a Crack in a Vinyl Window Frame

Step 1: Clean the area around the crack. Carefully insert a small piece of metal like a file, skewer, or pocketknife in the crack to get all the dirt out.

Step 2: Put on clean gloves and carefully apply vinyl adhesive in and over the crack. Use the pressing tool to smooth the adhesive and wipe extra away.

Step 3: Let it dry 24 hours.

Step 4: Using a razor blade, carefully scrape any excess adhesive away. Sand smooth.

Step 5: Use a scratch remover compound to buff any visual signs of the crack and adhesive away. Polish and clean.

How to Repair a Hole in a Vinyl Window Frame

Step 1: Run your finger over holes in the window frame to check for rough edges. Sand down any sharp edges with 120 or 150 medium-grit sandpaper.

Step 2: Outline the hole or crack with a pencil and carefully cut it away with a razor blade. Use caution so that you don’t cut deeper into the frame than the vinyl.

Step 3: Now measure the area to be repaired again. Cut two patches, one that’s slightly longer than the repair area and one that fits the space exactly.

Step 4: Insert the longer patch inside the hole and, wearing gloves, use the adhesive to secure it in place on the inside of the hole. Apply adhesive to the outside face of the interior patch as well.

Step 5: Now, hold the exact match patch over the hole and press it down firmly using the included tool. Seal the edges with more adhesive and use the tool to wipe away any excess.

Step 6: Let it dry 24 hours.

Step 7: Using a razor blade, carefully scrape any excess adhesive away. Sand smooth.

Step 8: Use a scratch remover compound to buff any visual signs of the crack and adhesive away. Polish and clean. 

Some Vinyl Window Repairs Are Better Left to a Professional

Of course, some vinyl window repairs are more complicated and are probably better left to a professional. If your hole or crack is too large for a DIY kit, that’s the perfect time to call in a professional. And, if you don’t feel confident about repairing yourself, a professional can ensure it’s done right without additional damage to your window frame.

If you notice damage to your window seal, outsource that repair to a trusted professional. A window that appears foggy or hazy is usually a good indicator that your window seal is broken. When this happens, condensation builds between the panes of glass and decreases the energy-efficient insulation properties of your double or triple-pane windows.