Replacement Storm Windows Guide

Replacement storm windows are installed over a home’s existing windows to provide extra protection from harsh weather and improve energy efficiency. Homeowners with older or historic properties often choose storm windows to preserve the original architecture while meeting strict community design guidelines.

Where Are Storm Windows Installed?

Storm windows are easy to install on nearly any type of residential window. Most are installed on the home’s exterior and are available in both operable and fixed designs. You can also purchase interior storm windows, which offer increased insulation and energy efficiency. However, they don’t protect the window from outside damage since they sit inside the home.

Storm windows are a cost-effective alternative to full window replacement, especially for single-pane windows. They are durable, energy-efficient, and often more affordable than complete window replacements.

How Do They Operate?

Storm windows come in both fixed and operable styles. A standard design features a double track: the outer track holds a glass pane and screen, while the inner track has a movable glass panel for ventilation. Triple-track storm windows are ideal for preserving the functionality of double-hung windows. These include two operable glass panes and a screen, each on its own track, allowing you to open the window from the top or bottom.

Storm Window Replacement Costs

Storm Window Price Tiers

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Factors That Affect Your Costs

Many factors influence how much you’ll pay for a storm window:

• Size: Larger or custom-sized storm windows increase the overall cost.
• Type: Triple-track windows cost more due to added functionality.
• Material: Aluminum and standard glass are the most affordable options.
• Installation Costs: Labor rates vary by region. Most fall between $70 and $175 per window.

Despite their low upfront cost, storm windows offer long-term benefits and are widely considered a smart investment by window professionals.

Types of Storm Windows

Storm windows come in several styles to meet different home and performance needs.

Exterior

These are mounted outside your existing windows and may be fixed or operable.

• Two-Track: One glass panel and screen, with a second pane that slides vertically.
• Three-Track: Two glass panels and a screen on separate tracks. Offers flexibility for airflow at the top or bottom.
• Basement Storm Window: A small, fixed window with a latch, often used in basements.

Interior

Interior replacement storm windows focus on insulation. They attach with magnets, pressure-fit frames, or clips, offering a discreet solution that doesn’t alter your exterior curb appeal.

Disposable

Sold as kits, these feature plastic sheeting and framing strips. They’re a temporary, budget-friendly way to reduce drafts.

Storm Window Materials

Frame options typically include:

• Aluminum: Lightweight, affordable, and resistant to corrosion.
• Wood: Offers a traditional look and better insulation but requires regular maintenance.

Glass options:

• Standard Glass: Affordable and widely available.
• Low-E Glass: Features a transparent coating that reflects heat. It’s ideal for energy savings in both summer and winter.

Benefits of Installing Storm Windows

• Weather Protection: Storm windows act as a protective barrier against rain, wind, and debris.
• Reduced Energy Bills: By minimizing air leakage, storm windows reduce heating and cooling costs. Homes with storm windows over single-pane windows can save up to $350 annually.
• Noise Control: They dampen outdoor noise — a plus for homes near roads or busy neighborhoods.
• Cost-Effective Alternative: If your current windows are structurally sound, replacement storm windows offer a high-impact upgrade at a fraction of the cost of full replacements.

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How to Install Storm Windows

Exterior Installation

1. Clean the existing window and make any necessary repairs.
2. Dry-fit the storm window to check for proper alignment.
3. Apply caulk to the top and sides of the back frame (leave the bottom unsealed for drainage).
4. Position and screw the storm window into place.
5. Adjust the expander to seal against the sill.

Interior Installation

Interior storm windows often use a magnetic or compression fit. Measure carefully for a snug fit and follow the manufacturer’s instructions.

Though this project is DIY-friendly, professional installation is often a better choice for larger projects or hard-to-reach areas. Contractors ensure a proper fit and long-lasting performance.

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What to Consider Before Buying Storm Windows

• Brand and Warranty: Leading window manufacturers like Pella, Marvin, Simonton, and Renewal by Andersen all offer storm window lines. Warranty terms vary, so review coverage before purchase.
• Energy Efficiency: Low-E glass adds insulation and boosts efficiency. This is especially helpful in older homes with single-pane windows.
• Climate Suitability: Choose aluminum frames for wet or coastal climates. They’ll resist corrosion better than other materials.
• Lifespan: Aluminum storm windows can last 30+ years. Wood frames may last even longer with proper maintenance.
• Maintenance: Windows with more parts (like triple-track models) take longer to clean and may require more upkeep over time.

Finding Storm Window Installers

If you’d prefer professional replacement storm window installation, use the below project calculator. It’ll estimate your costs and match you with local pros. Installing storm windows can be a simple DIY job. However, getting it done right the first time ensures better protection and performance for years to come.

Windows Cost Calculator

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