Maintaining Your Isothermic Doors and Windows

PVC vs. Aluminum Windows 

Windows don’t just improve a home’s look—they are essential to comfort and energy efficiency. Among the many options available, vinyl and aluminum remain two of the most common choices. Isothermic’s Series 2 now introduces an option that combines the strengths of both materials.

Material composition 

Vinyl (PVC) windows 

Vinyl windows are made from polyvinyl chloride (PVC), an extremely durable and versatile plastic. The manufacturing process involves extruding PVC to create window frames that are both strong and energy efficient. PVC windows are known for their excellent insulation properties, resistance to moisture and decay, and low maintenance requirements. They are available in a wide range of colours and finishes, making them a versatile option for virtually any home design.

Aluminum windows

Aluminum windows are made from aluminum frames known for their strength and durability. These frames are typically coated with a protective finish to prevent corrosion and enhance their appearance. Aluminum windows are appreciated for their slim profiles, which allow for larger glass surfaces and increased natural light. However, they are less effective insulators than vinyl windows, which can lead to higher energy costs over time. Their clean, modern aesthetic makes aluminum windows a popular choice for contemporary home designs.

If you like the look of aluminum windows but are seeking better energy performance, learn more about our Series 2—a unique Isothermic innovation that is AW certified.

Series 2 

Our brand-new Series 2 is the most advanced window system designed in the last 40 years. It was created for those who refuse to compromise on durability and who are thinking long term—exceeding basic industry standards.

With two patents pending and AW certification, Series 2 is a smart choice for both residential and commercial projects. An advisor will be happy to tell you more in store.

Durability and maintenance 

PVC windows are renowned for their impressive durability. The PVC used by Isothermic is inherently resistant to the elements, including moisture, UV rays and extreme temperatures. This resistance ensures that vinyl windows do not warp, crack or fade over time. Their longevity is further enhanced by resistance to corrosion and rust.

One of the greatest advantages of vinyl windows is their low maintenance. Unlike wood windows, which require regular painting or staining, PVC windows maintain their appearance and functionality with minimal upkeep. Cleaning typically requires only soap and water, making them easy to maintain for homeowners.

Aluminum windows are also known for their strength and durability. The material can withstand a wide range of weather conditions without significant damage. However, aluminum is a good conductor of heat and can be prone to condensation, which may lead to corrosion over time if not properly treated. Modern aluminum windows often include thermal breaks and protective coatings to mitigate these issues, but they may not always match the longevity of vinyl in certain environments.

While aluminum windows generally require little maintenance, they do require periodic attention to prevent issues such as corrosion—particularly in coastal areas where salt exposure is a concern. Regular cleaning and inspection are necessary to ensure protective coatings remain intact. Any scratches or coating damage should be addressed promptly to avoid further deterioration.

Once again, we invite you to explore Series 2, specifically designed to offer the best of both worlds to customers mindful of all these considerations.

Energy efficiency 

Vinyl windows excel in energy efficiency thanks to their outstanding insulation properties. PVC has low thermal conductivity, meaning it does not easily transfer heat or cold. This results in better thermal performance, helping maintain consistent indoor temperatures and reducing energy costs. Vinyl window frames often feature multi-chamber designs and can be filled with insulating materials to further enhance energy performance.

In contrast, aluminum windows have higher thermal conductivity, making them less effective insulators. This can lead to higher energy costs, as heat escapes during winter and enters during summer. Many modern aluminum windows now incorporate thermal breaks—non-conductive materials inserted between the interior and exterior frame—to improve insulation. Despite these advancements, PVC windows generally offer superior energy efficiency, making them a preferred choice for homeowners looking to reduce energy bills.

Based on this reality, we developed Isothermic’s Series 2. We are proud to say it is the best window system designed in the last 40 years in our industry. It was created for those who demand uncompromising durability and long-term performance, exceeding basic standards.

With two patents pending and AW certification, Series 2 is a smart choice for both residential and commercial projects.

With two patents pending and AW certification, Series 2 is a smart choice for both residential and commercial projects.

Aesthetic options with a design-driven approach 

Vinyl windows offer remarkable design flexibility, allowing homeowners to customize their appearance to suit a wide range of architectural styles. They are available in a broad selection of colours and finishes, including wood-look textures that replicate the appearance of traditional wood windows—coming soon at Isothermic.

This versatility ensures vinyl windows can complement both modern and classic designs. Vinyl windows are also available in various styles, such as casement, awning, single-hung and sliding, offering many functional and aesthetic options.

Aluminum windows, as we know them today, are appreciated for their clean, modern aesthetic. Aluminum’s strength allows for slim profiles and larger glass surfaces, maximizing natural light and providing unobstructed views—features often sought by architects for minimalist designs.

Isothermic’s Series 2 now opens up a new world of possibilities by combining the design potential of aluminum with the many advantages of PVC windows.

Cost considerations 

In terms of upfront costs, vinyl windows are generally more affordable and accessible than aluminum windows. The manufacturing process for vinyl windows is less expensive, and the material itself is more economical. This makes vinyl windows an attractive option for budget-conscious homeowners who don’t want to compromise on quality or performance.

Aluminum windows, due to their material properties and more complex manufacturing process, tend to be more expensive initially.

Beyond the initial investment, it’s essential to consider long-term costs related to energy savings, maintenance and lifespan. Vinyl windows typically offer significant energy savings due to superior insulation, leading to lower heating and cooling bills over time. Their low maintenance requirements also translate into cost savings, as frequent repairs or treatments are not necessary.

luminum windows, while more expensive upfront, can result in higher long-term costs due to lower energy efficiency and potential maintenance needs. However, their durability can lead to a longer lifespan, offsetting some additional expenses. Homeowners should weigh these factors when choosing between vinyl and aluminum windows—unless they opt for Series 2, which stands out as an innovative, high-performance solution in our industry.

Environmental impact

Vinyl windows offer several environmental benefits, making them an ecofriendly choice for homeowners. A major advantage is recyclability. At the end of their life cycle, vinyl windows can be recycled and transformed into new products, reducing waste.

Their energy efficiency also contributes to a lower carbon footprint. By providing excellent insulation, vinyl windows help reduce energy consumption for heating and cooling, lowering greenhouse gas emissions from power generation.

Aluminum windows also present environmental considerations. Aluminum production is energy-intensive, involving extraction and processing that can have a significant environmental impact. However, aluminum is highly recyclable. Recycling aluminum requires only a fraction of the energy needed to produce new aluminum, making it a sustainable option when recycled materials are used. The long lifespan and durability of aluminum windows can further reduce environmental impact by limiting replacement frequency.

As for Series 2, offered in hybrid and double-hybrid configurations using 100% recycled and recyclable PVC and aluminum, it was designed in compliance with rigorous Passive House standards, achieving a U-value of 0.14 Btu/h·ft²·°F—a 33% improvement in energy performance compared to the current industry maximum.

Not sure what to choose or where to start? 

Our team will be happy to guide you through this decision and explain your options.

Feel free to schedule a virtual or in-store consultation, or simply stop by one of our branches.