How to Remove and Replace Storm Windows: A Step-by-Step Guide


Storm windows are essential for protecting your home from harsh weather, improving energy efficiency, and reducing drafts. Whether you’re replacing old, worn-out storm windows or preparing for a seasonal change, knowing how to remove and replace storm windows safely is key. This guide provides step-by-step instructions, tools you’ll need, and tips for a professional finish.

1. Why Replace Storm Windows?

Replacing storm windows can improve your home in several ways:

  • Enhanced energy efficiency – New storm windows reduce heat loss in winter and keep interiors cooler in summer.

  • Protection from weather damage – They shield primary windows from rain, snow, and wind.

  • Improved aesthetics – Replacing foggy or damaged storm windows instantly updates the exterior look.

  • Ease of maintenance – Modern materials are easier to clean and maintain than older wooden frames.

2. Tools and Materials You’ll Need

Before starting, gather the following:

  • Screwdriver (flathead and Phillips)

  • Putty knife or paint scraper

  • Utility knife

  • Replacement storm window(s)

  • Tape measure

  • Work gloves

  • Safety glasses

  • Shims and caulk (if needed)

Tip: Having a second person to help is highly recommended for larger windows.

3. Removing Old Storm Windows

Step 1: Prepare the Area

  • Clear the area inside and outside the window.

  • Lay down a drop cloth to protect floors or window sills.

Step 2: Remove Window Stops (if applicable)

  • Some storm windows are held in place by stops or clips.

  • Use a screwdriver or putty knife to carefully remove these without damaging the frame.

Step 3: Lift Out the Storm Window

  • Wearing gloves, carefully lift or slide the window out of the frame.

  • For heavier windows, have a helper assist to prevent injury or glass breakage.

Step 4: Clean the Frame

  • Remove old caulk, debris, and paint buildup.

  • Check the frame for rot or damage and repair if needed before installing the new window.

4. Installing New Storm Windows

Step 1: Measure and Check Fit

  • Measure the height and width of the opening.

  • Ensure the replacement storm window matches these dimensions.

  • Dry-fit the window to check alignment.

Step 2: Position the Window

  • Place the storm window into the frame carefully.

  • Use shims if necessary to ensure it sits level and plumb.

Step 3: Secure the Window

  • Reattach window stops or clips according to manufacturer instructions.

  • For sliding or removable storm windows, ensure tracks are clean and aligned for smooth operation.

Step 4: Seal and Insulate

  • Apply caulk around the edges if recommended.

  • Check for gaps that could allow drafts or water infiltration.

5. Tips for a Smooth Replacement

  • Work on a mild day – Extreme temperatures can make materials expand or contract.

  • Handle glass carefully – Always wear gloves and safety glasses.

  • Maintain symmetry – Ensure windows are level to avoid operational issues.

  • Clean both sides – Cleaning windows before installation saves time and effort later.

6. Seasonal Maintenance for Storm Windows

  • Spring/Summer: Remove storm windows in warmer months for ventilation if desired.

  • Fall/Winter: Reinstall to protect from cold drafts and harsh weather.

  • Regular Cleaning: Keep tracks and sills free of dirt to prevent sticking.

  • Inspect seals and caulking: Replace any worn areas to maintain energy efficiency.

7. Benefits of Proper Storm Window Replacement

  • Lower energy bills through improved insulation

  • Reduced drafts and more comfortable interiors

  • Extended lifespan of primary windows

  • Enhanced curb appeal and property value

Conclusion

Removing and replacing storm windows doesn’t have to be complicated. By following these steps, using proper tools, and taking safety precautions, you can achieve a secure, energy-efficient installation. Regular maintenance and seasonal care will keep your storm windows functioning optimally for years to come.

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