
Key Takeaways
- Fiberglass window frames are the most durable and energy-efficient choice for cold climates because they’re resistant to warping and rotting.
- Vinyl frames are a cost-effective solution with good insulation properties.
- Wood-clad frames have a traditional aesthetic and thermal benefits but require regular maintenance to prevent moisture damage.
- Composite frames combine the best qualities of wood and vinyl to provide durability and energy efficiency.
- Panda Windows & Doors is your go-to choice for custom windows in the US.
Top 5 Window Frame Materials For Cold Climates
1. Fiberglass
Fiberglass window frames are constructed from glass fibers and resin - and they’re resistant to warping, rotting, and extreme temperature changes. Fiberglass also has excellent insulation properties, which minimize heat transfer and keep the warmth inside your home during the winter months.
While fiberglass windows are more expensive compared to other materials, the long-term savings on energy bills and minimal maintenance justify the cost for many.
Since our founding in 1991, Panda Windows & Doors has specialized in state-of-the-art custom glass wall systems for both residential and commercial spaces. Operating from our manufacturing facility in Las Vegas, Nevada, we have been at the forefront of innovation for over 30 years. Our product offerings, which include over 80 high-end options, such as pivot doors, French doors, folding doors, lift & slides, multi-slides, horizontal sliding walls, and operable windows, are available in a range of materials, including aluminum, steel, stainless steel, bronze, solid wood, and aluminum-wood clad.
Our company is widely recognized for its award-winning designs, engineering solutions, and rapid delivery times. We ensure that our customers throughout the U.S. and Caribbean receive their products within 6-10 weeks. Our company is trusted by leading architectural firms and glaziers nationwide, and we stand as the premier manufacturer of custom luxury windows and doors in the United States.
Learn About Custom Solutions from Panda Windows & Doors Today
2. Vinyl
Vinyl window frames are a budget-friendly option for those looking to improve their home's insulation without breaking the bank. Made from polyvinyl chloride (PVC), these frames are resistant to moisture and do not require painting or staining.
While vinyl frames may not provide the same level of energy efficiency as fiberglass or composite frames, they’re still a significant improvement over less efficient materials like steel and aluminum.
3. Wood-Clad

Wood is a great material choice if aesthetics is your priority,
Wood-clad frames have a wooden interior for a warm, traditional appearance, while the exterior is clad in a weather-resistant material like aluminum or vinyl. You get to enjoy the beauty of wood and the durability and insulation needed for cold climates.
However, they do require regular maintenance - sealing and painting - to prevent moisture damage and maintain their appearance.
4. Composite
Composite window frames are an innovative option that combines the strengths of multiple materials - like wood fibers and PVC - for superior durability.
Thus, they resist warping, rotting, and other damage caused by extreme weather conditions. On top of that, composite frames also provide a tight seal against the weather to reduce heat loss and lower energy bills.
5. Aluminum Frames with Thermal Breaks
Aluminum frames are lightweight and durable but can conduct heat, which is not ideal for cold climates.
However, modern aluminum frames often include thermal breaks - insulating materials that separate the interior and exterior aluminum components - to reduce heat transfer.
Additional Window Features To Improve Cold Climate Performance
1. Double or Triple Glazing
Double or triple glazing is essentially using two or three panes of glass separated by air or gas-filled spaces. This significantly reduces heat transfer in the winter - plus it help reduce noise.
2. Window Seals
Properly sealed windows are essential for preventing drafts and maintaining insulation. High-quality seals make sure that no air leaks occur around the window frame, keeping the cold air out and the warm air in.
3. Low-E Glass Coatings
Low-E (low-emissivity) glass coatings are thin layers applied to window panes that reflect heat back into your home, which helps to reduce heat loss during the winter.
Read More: What Types of Windows Are the Least Expensive to Replace?
Choose Panda Windows & Doors For Custom Windows

Panda’s 30+ years of experience means we can handle even complex window projects.
Who Are We
At Panda, we design and manufacture custom luxury windows and doors. We're talking about award-winning designs and engineering solutions personalized for even the most complex projects. Plus, many of our windows are NFRC-tested and impact-rated, which showcases our commitment to quality and performance.
What We Provide
- Customization: We give you unlimited customization options - choose your style, material, size, finish, and color to match your preference.
- Size: Our panels are available in impressive dimensions, reaching up to 24ft tall or 16ft wide.
- Energy Efficiency: Our energy efficient windows contribute to LEED® points in several categories.
- Quality Control: We have an on-site test wall to achieve the highest quality control.
Reach out to us to learn more about our products and get a free quote.
Frequently Asked Questions (FAQs)
How do I know if my windows are energy-efficient?
Energy-efficient windows have features such as double or triple glazing, low-E coatings, and high-quality seals. To assess your windows' efficiency, also check their NFRC ratings.
Can window frames be upgraded for better cold weather performance?
Yes, existing window frames can be upgraded to improve their performance in cold climates. Options include adding storm windows, applying new weather stripping, and installing low-E film.
What maintenance is required for different window materials?
Vinyl and fiberglass frames require minimal upkeep - just occasional cleaning with mild soap and water. Wood-clad frames, however, need more attention - regular sealing or painting to protect against moisture and rot.
How does low-E glass improve energy efficiency?
Low-E glass improves energy efficiency by reflecting heat back into your home to reduce heat loss during the winter months. It also block harmful UV rays to protect your furniture and flooring from fading.
What window frame material options does Panda Windows & Doors provide?
We only use highly sustainable and durable frame materials like:
1. Aluminum
2. Steel
4. Bronze
5. Wood