How to Install Storm Windows

November 13, 2024

When it comes to home upgrades that pay off in comfort and savings, storm windows are hard to beat. They provide an added layer of insulation that not only makes your home more energy-efficient but also protects it from drafts, noise, and moisture. Unlike full window replacements, storm windows are an affordable option that can make a noticeable difference, especially in older homes. 

In this step-by-step guide, we’ll cover everything from selecting the right type to achieving a professional-grade installation, ensuring your home is well-prepared for any season.

Table of Contents

1. Types of Storm Windows

Before diving into the installation, it’s essential to understand the types of storm windows available and how they differ. Choosing the right storm window for your needs can affect insulation performance, durability, and cost-effectiveness. Here’s a breakdown of the main types:

  • Interior Storm Windows: These windows are installed on the inside of your existing window frame, offering insulation without altering the exterior appearance of your home. Interior storm windows are popular in urban areas due to their noise-reduction benefits and are generally easier to install and remove, making them a flexible option for renters or those in heritage buildings where exterior modifications are restricted.
  • Exterior Storm Windows: Designed to be installed outside, exterior storm windows provide superior protection against weather, making them ideal for regions with harsh climates. While installation can be slightly more involved, these windows offer robust durability and are often the go-to choice for long-term insulation and protection.

Material Options

Selecting the right material is also crucial as it influences durability, maintenance needs, and overall performance. Common materials include:

  • Aluminum: Known for its strength and lightweight qualities, aluminum storm windows are highly durable. However, they can conduct heat, which might reduce insulation in colder climates.
  • Vinyl: Vinyl windows are low-maintenance and offer good insulation. They’re more affordable but may not be as long-lasting as aluminum in extreme climates.
  • Wood: While aesthetically pleasing and highly insulating, wood requires more maintenance to prevent rot and damage from moisture.

Understanding these types and materials will help you select storm windows that suit your climate, aesthetic preferences, and budget.

Choosing the Right Storm Windows for Your Climate

Climate plays a big role in selecting the best storm windows for your home. Different materials and styles perform better depending on regional weather conditions:

  • Cold Climates: For areas with harsh winters, exterior aluminum or vinyl storm windows are ideal as they provide strong insulation against low temperatures. Double-paned storm windows can add even more protection.
  • Hot Climates: In warmer areas, look for low-E (low-emissivity) coated storm windows that help reflect sunlight and reduce heat gain, keeping your home cooler and less reliant on air conditioning.
  • Coastal Regions: If you live near the coast where storms and humidity are common, choose durable, corrosion-resistant materials like aluminum and consider installing exterior windows for added weather resistance.

Selecting the right type and material based on your climate will ensure your storm windows provide maximum comfort and efficiency.

2. Gather Necessary Tools and Materials

Having the right tools and materials on hand will make the installation process smoother and more efficient. Here’s what you’ll need:

  • Tools: Screwdriver, measuring tape, level, utility knife, caulking gun, putty knife
  • Materials: Storm windows, caulk, weatherstripping, screws, safety glasses, gloves (for protection)

Preparing these tools and materials beforehand will save time and prevent interruptions. Safety gear like gloves and safety glasses are recommended to protect against sharp edges and accidental slips during installation.

3. Measure Your Existing Windows

Measuring accurately is one of the most critical steps. A poor fit can lead to air leaks and reduce the storm window’s effectiveness. Here’s how to measure your existing windows:

  1. Width: Measure the width of the window frame at three points—top, middle, and bottom—and record the smallest measurement. This ensures the storm window fits the narrowest part of the frame.
  2. Height: Measure vertically on both sides and in the center, again recording the smallest measurement.
  3. Depth: Check the depth to ensure the storm window will sit comfortably within the frame without protruding.

Tips for Unique Window Shapes or Older Frames

If you have windows with unique shapes or older frames, you may need custom storm windows. Additionally, older frames may have irregularities that make it challenging to achieve a tight seal. In these cases, consider working with a professional to ensure your storm windows are properly fitted.

4. Prepare the Window Area

Before installing, make sure the window area is clean and free of any debris. A clean, smooth surface is essential for a secure installation.

  1. Clean the Frame: Remove any dust, dirt, or cobwebs. For frames with paint chips or old caulk, use a putty knife to smooth the surface.
  2. Inspect the Frame: Look for signs of rot, water damage, or warping. If you notice any damage, repair it before proceeding. An unstable frame can lead to poor sealing and reduce the storm window’s effectiveness.

By taking the time to prep the area, you’ll improve the longevity and performance of your storm windows.

5. Install the Bottom of the Storm Window First

Starting with the bottom edge of the storm window allows for a more stable installation. Follow these steps:

  1. Position the bottom edge of the storm window within the frame, ensuring it sits flush.
  2. Use a level to confirm it is horizontally straight.
  3. Secure it in place by screwing it into the frame but avoid overtightening as this could misalign the window or damage the frame.

Starting with the bottom creates a stable foundation, allowing you to position the sides and top more precisely.

6. Secure the Top and Sides of the Window

With the bottom edge in place, proceed with securing the top and sides:

  1. Lift the window, ensuring it’s properly aligned with the frame.
  2. Insert screws along the top and sides, double-checking that the window remains level.
  3. Tighten the screws evenly but be cautious not to overtighten, which could warp the frame or window.

Securing all sides evenly helps maintain an airtight fit, reducing potential air leaks and improving insulation.

7. Apply Caulking and Weatherstripping

Once the storm window is in place, sealing gaps around it is essential for insulation. Here’s how to apply caulking and weatherstripping effectively:

  • Caulking: Using a caulking gun, apply a steady line of caulk along the edges where the storm window meets the frame. Smooth it out with a putty knife for an even application.
  • Weatherstripping: Attach weatherstripping along the edges to enhance insulation. This adds another layer of protection against drafts, particularly in colder months.

Proper caulking and weatherstripping ensure the storm window is well-sealed, maximizing energy efficiency and keeping your home comfortable year-round.

8. Test for a Secure, Airtight Fit

After installation, it’s essential to test for any air leaks or loose areas. Here’s a simple way to check:

  1. Run your hand along the edges of the window. If you feel any drafts, it indicates an air leak.
  2. If necessary, reapply caulk or adjust screws for a tighter fit.
  3. Consider using a candle or lighter flame (with caution) near the edges to detect slight drafts.

Taking a few minutes to ensure an airtight fit will improve insulation, leading to energy savings and a cozier home.

9. Repeat for Each Window as Needed

For multiple windows, follow the same process for each. If you encounter different window sizes or shapes, adjust your measurements and approach accordingly. Consistency in installation across all windows will help maintain uniform energy efficiency and weather protection throughout your home.

Common Mistakes to Avoid During Installation

Installing storm windows can be a straightforward DIY project, but there are a few common mistakes to watch out for:

  1. Inaccurate Measurements: One of the biggest pitfalls is incorrect measurements, leading to poor-fitting windows. Always measure twice to ensure accuracy.
  2. Using the Wrong Caulk: Not all caulk types are suited for window installation. Choose a high-quality, weather-resistant caulk for better insulation.
  3. Overtightening Screws: Overtightening screws can warp the frame or window, leading to air gaps. Secure screws firmly without excessive force.
  4. Skipping the Air Leak Test: Failing to check for air leaks after installation can reduce the storm window’s effectiveness. Test for drafts and reapply caulk or make adjustments as needed.

By avoiding these mistakes, you can ensure a smooth installation process and better performance from your storm windows.

10. Maintenance Tips for Storm Windows

Proper maintenance will extend the life of your storm windows and keep them performing well. Here’s a practical maintenance guide:

  • Seasonal Cleaning: Regularly clean the storm windows to remove dirt and grime, especially before and after winter.
  • Inspect Caulking and Weatherstripping: Every season, check for any gaps or wear in the caulk and weatherstripping. Reapply as needed to maintain insulation.
  • Check for Wear and Tear: Look for any damage, especially after storms or high winds. Addressing minor issues promptly will prevent them from becoming costly repairs.

Troubleshooting Common Issues

  • Misaligned Frames: If frames become misaligned, loosen the screws slightly and readjust.
  • Drafts or Air Leaks: Use additional weatherstripping or caulk to fill in gaps.
  • Condensation: Occasionally, condensation can form between storm windows and primary windows. Regular ventilation can help prevent this.

Consistent maintenance will keep your storm windows in good condition, protecting your home and optimizing energy savings.

Cost Comparison: Storm Windows vs. Replacement Windows

When considering home improvements, it’s natural to wonder how storm windows stack up against full replacement windows in terms of cost and benefit. Replacement windows provide comprehensive upgrades in insulation, materials, and aesthetics, but they come with a higher price tag. Storm windows, on the other hand, offer much of the insulation and energy savings benefits at a fraction of the cost. Here’s a quick comparison:

Feature
Storm Windows
Replacement Windows
Initial Cost
Lower
Higher
Installation Time
Faster
Slower
Energy Savings
Moderate
High
Maintenance
Moderate
Lower
Aesthetic Impact
Minimal
High

If budget is a concern and you’re looking for efficient, effective insulation, storm windows are a cost-effective choice that still delivers significant energy savings.

Conclusion

Installing storm windows is a straightforward yet effective way to make your home more energy-efficient and resilient to weather changes. With the right choice of materials and proper installation, storm windows can provide substantial insulation, reduce heating and cooling costs, and even offer noise reduction.

By following each step carefully—from preparation and measurement to maintenance—you’ll maximize the longevity and effectiveness of your storm windows, creating a more comfortable and cost-efficient home environment.

To get a free window quote in your area, click here.

FAQs

What are the cons of storm windows?
Some potential drawbacks include occasional condensation buildup between the storm and main windows, limited design options, and the need for regular maintenance to ensure a tight seal.

What does labor cost to install a storm window?
Professional installation typically ranges from $100 to $200 per window, depending on location. DIY installation can reduce these costs if you’re comfortable handling the installation process yourself.

Can I install my own hurricane windows?
Yes, with the right tools and preparation, but professional installation is advisable in hurricane-prone areas to ensure maximum durability and protection.

How do storm windows compare with replacement windows in cost and efficiency?
Storm windows are generally more affordable and offer effective insulation. While replacement windows provide more comprehensive solutions, storm windows are a cost-effective alternative that improves efficiency without major renovation.

Are storm windows suitable for high-wind areas?
Yes, especially exterior storm windows made from durable materials like aluminum. Proper installation is key to ensuring they withstand high winds.

Sources

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