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Tru exteriors
June 10, 2024

Should Property Owners Prioritize Replacing Windows or Siding First?

When it comes to property ownership, it’s important to know that general improvements can significantly enhance the value, aesthetics, and energy efficiency of a home or commercial building. Among the many upgrades owners consider, replacing windows or siding are two of the most impactful. However, deciding which project to prioritize first can be a dilemma – and that’s where this blog comes in handy. Together, let’s explore the factors that influence whether owners should replace windows or siding first, helping you make an informed decision.

Energy Efficiency

One of the primary reasons owners consider replacing these elements is to improve energy efficiency. Both projects can reduce energy bills by preventing heat loss in winter and keeping the space cooler in summer. However, windows typically play a more direct role in energy efficiency.


Old or poorly insulated windows can be significant sources of heat loss, leading to higher energy bills. Replacing windows with energy-efficient models, such as double or triple-pane with low-E coatings, can drastically reduce energy consumption. The U.S. Department of Energy estimates that energy-efficient options can save property owners up to 15% on their energy bills.


While siding also contributes to a space’s insulation, its impact on energy efficiency is less direct than windows. However, if you opt for insulated solutions, it can improve your building’s thermal envelope, reducing energy costs.


If immediate energy savings are your top priority, replacing windows first might be the better option. However, if you plan to add insulated siding, it can also contribute to energy efficiency in the long run.

Building Protection and Structural Integrity

Another critical factor is the protection and structural integrity of your building. Both windows and siding play roles in safeguarding your space from the elements, but the urgency of replacement can vary.


Damaged or outdated windows can lead to drafts, leaks, and increased energy costs – and they can also compromise your property’s security. If your glass is broken, has damaged seals, or are difficult to open and close, replacing them should be a priority.


Whether it’s residential or commercial siding, the material protects the structural components of your building from moisture, pests, and harsh weather. If your exterior is cracked, warped, or rotting, it can lead to more significant problems, such as water damage and mold growth, which can compromise your property’s structural integrity.


If your siding is severely damaged, addressing it first can prevent more extensive and costly repairs in the future. However, if your windows are also in poor condition, it’s essential to balance the urgency of both needs.

Aesthetics and Curb Appeal

Both new windows and siding can dramatically improve your building’s curb appeal, but the impact on aesthetics can differ.


Replacing old relics with modern designs can update the look of your property and increase its market value. New windows can enhance both the exterior and interior appearance, offering a fresh and clean look.


New residential or commercial siding can completely transform your building’s exterior, providing an immediate boost in curb appeal. It offers a more noticeable change compared to windows, especially from a distance.


If you’re looking to make a significant visual impact, prioritizing siding might be the way to go. However, if you’re aiming for a comprehensive aesthetic upgrade, coordinating replacements of either element can provide the best results.

Project Coordination and Timing

If you’re planning to replace both windows and siding, coordinating the projects can save time and money.

Replacing Windows First

This approach allows for the proper fitting of windows and ensures that any potential damage to the siding during installation is addressed.

Replacing Siding First

If you replace siding first, you might need to disturb the new exterior when installing windows later, leading to additional labor and potential damage.


Generally, replacing windows with professional contractors before siding is recommended. This sequence allows for a seamless installation process and helps avoid potential issues with siding that might arise from the replacement.

From Commercial Siding to Residential Windows

Deciding whether to replace windows or siding first depends on various factors, including energy efficiency, property protection, aesthetics, and project coordination. If energy efficiency and immediate savings are your top priorities, start with windows. If your exterior is severely damaged and poses a risk to your building’s structural integrity, address it first. For the best results, consider the overall condition of both elements and plan accordingly.

In many cases, replacing windows first is the optimal choice, ensuring a smooth installation process for both projects. Ultimately, the decision should align with your specific needs, budget, and long-term improvement goals.

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