facebook tracking

The premier Longmont window company

Now offering custom patio doors!

Custom Longmont window replacements

Flexible financing available!!!

Guide to
Window Replacement
Choosing the right windows
Should I get
Energy-efficient windows?
Find Out now!
Your window screens
Learn How-To Rescreen

Custom Exteriors

Your Trusted Longmont Window Replacement company

Choosing Custom Exteriors for your window replacement in Longmont, Colorado, you are choosing a window replacement partner who provides unmatched quality, exceptional customer service, and long-lasting value. Contact Custom Exteriors today to experience the difference that professional, personalized service can make in transforming your home. 

Custom Exteriors

Expertise & Experience: Providing customized Window Replacements

Custom Exteriors is proud to be a top choice for window replacement in Longmont and the surrounding areas. Our skilled team also installs sliding glass patio doors, custom entry doors, and exterior French doors. 

Our team has decades of experience in window replacements and an A+ rating with the BBB. Custom Exteriors is a member of the Longmont Chamber of Commerce and are proud to be the first choice for Longmont window replacements. 

When you work with Custom Exteriors, you can expect: 

Contact Us

  • 9704608714
  • 18674 County Road 3

Your trusted choice for window replacement in Longmont

When it comes to window replacement in Longmont, Custom Exteriors is the name that stands out among the rest. We pride ourselves in our commitment to excellence. We deliver these results because our team boasts a wealth of knowledge and experience. So when it comes to installing new windows in Longmont, we have a track record of satisfied customers. We would be honored to be your premier choice for all your window replacement needs. 

Why Choose Custom Exteriors as your Longmont window replacement company?

Aa a trusted Longmont window replacement company, Custom Exteriors believes in providing our customers with a window replacement experience that’s second to none. Here’s why you should choose us: 

Unmatched experience with a Commitment to excellence

With years of experience as a trusted Longmont window replacement company, Custom Exteriors has developed a deep understanding of our industry. So, we are skilled and knowledgeable in various window types, materials, and installation techniques. Our team of experts is also experienced in the latest industry technologies. Because of this, we ensure that you receive the highest quality service and products. 

Additionally, we are dedicated to delivering top-notch window replacement services. Our commitment to excellence means that we go the extra mile to ensure your new windows are installed flawlessly. In doing so, you are able to enhance your home’s energy efficiency, curb appeal, and overall value. 

Exceptional Customer service and competitive financing options

At Custom Exteriors, we understand that every homeowner has unique preferences and needs. So that’s why we offer a wide range of window options. We believe in clear communication and transparency. From the initial consultation to the final inspection, our team will be with you every step of the way. Our experienced team ensures that your window replacement project is a seamless and enjoyable experience. 

We also understand that window replacement can be a significant investment. So that is why we offer flexible financing options to accommodate various budgets. Our financing plans are designed to make it easier for you to enjoy the benefits of new windows without straining your finances. 

window replacement in Longmont by local window replacement company

your longmont window replacement company can help you choose The Right Window Style

Selecting a suitable window style for your home is an important decision. This is because windows serve functional purposes and contribute significantly to your home’s curb appeal. You can make informed choices that align with your home’s style and specific needs by exploring the different window systems with a trusted Longmont window replacement company.

1. Double-hung windows:

Double-hung windows are one of the most classic and versatile options. This is because they feature two sashes that slide vertically within the frame. So, they allow for excellent ventilation control and are a perfect choice for most architectural styles. 

2. Casement windows:

Casement windows are hinged on one side and open outward like a door. They also provide excellent airflow when open. They are a great choice for a modern design or those who prioritize unobstructed views. 

3. Awning Windows:

Awing windows are hinged at the top and open outward from the bottom, creating an “awning” effect. They are ideal for letting in fresh air during light rain. They are often a first choice for kitchens and bathrooms. 

4. Sliding Windows:

Sliding windows feature a fixed sash and one that slides. They offer a contemporary look and are easy to operate. Because of this, they are perfect for hallways and bedrooms. 

5. Bay and Bow Windows:

These windows typically have three panels, a larger one in the middle, surrounded by two smaller windows that angle outward. Bow windows also have a curved style. They are often used in living and dining rooms. 

6. Specialty Windows:

Custom and specialty-shaped windows can be tailored to your preferences. So, whether you need an arch, circle, or custom shape, these windows add individuality to your home. 

Why Choose Custom Exteriors For Your Longmont Window Replacement

Custom Exteriors is the premier choice for top-quality window replacements in Longmont. So, we are here to guide you through getting new windows. New windows enhance both the curb appeal and the function of your home. 

Because we are a trusted name in Longmont window replacements, we understand the importance of having beautiful and functional windows. Your replacement windows should provide clear views, increased energy efficiency, security, and protection from Colorado’s harsh weather. 

At Custom Exteriors, we believe that windows are not just functional components of your home. They are also essential pieces that make up its character and charm. So, whether you want to replace old, inefficient windows or start a home improvement project, we are here to make the process seamless and enjoyable. 


Custom Exteriors is the preferred Longmont window replacement company

The Benefits Of Energy-Efficient Windows

New windows in Longmont often result in a reduction of energy costs

Lower energy Bills:

One of the most immediate benefits of new windows is the potential for significant savings on your energy bills. Modern windows are designed to minimize heat transfer. So, they can keep your home warmer in the winter and cooler in the summer. 

Replacing your windows in Longmont with Custom Exteriors will likely result in a more pleasant indoor temperature

increased Comfort:

With energy-efficient windows, you can say goodbye to drafts and swings in temperature. This is because they have superior insulation properties. So they can maintain a consistent indoor environment year-round. They then allow you to enjoy your living space in comfort. 

New windows will reduce your carbon footprint by replacing old windows for energy efficient windows

Lower Carbon Footprint:

Using less energy for heating and cooling doesn’t just save you money, it also benefits the environment. So, by reducing your energy consumption, you lower your carbon footprint. Because of this, you are contributing to a more sustainable future. 

New windows in Longmont often result in a reduction of energy costs

UV Protection:

Energy-efficient windows often come with coatings that block harmful UV rays. UV Rays can fade your furniture and flooring over time. So, with UV protections, you can ensure a longer lifespan for your belongings. 

Longmont window company understands that new windows will reduce outdoor noise

Noise reduction:

If you live near busy streets or noisy areas, energy-efficient windows can help reduce that noise. This is because the insulated design acts as a barrier. In doing so, it creates a quieter indoor environment. 

Replacement windows can increase the value of your Longmont home

Improved Home Value:

Potential buyers are often willing to pay more for homes with energy-efficient features. So, replacing your windows with an energy-efficient option makes your property more valuable in the real estate market.

New windows in Longmont will help make your home more durable


Energy-efficient windows are often built to higher standards. So this can result in increased durability and a longer lifespan. This also means fewer maintenance costs and longer-lasting performance. 

Customizable options of your Longmont replacement windows can improve curb appeal

Customizable Choices:

Energy-efficient windows come in various styles and materials. A reputable Longmont window replacement company will help you choose options that are energy-efficient and match your style preferences. 

Window Maintenance Tips

Maintaining your windows ensures they continue performing well and looking their best. So, here are some practical window maintenance tips from a Longmont window company that you can follow to preserve your windows’ function, appearance, and lifespan. 

1. Regular Cleaning:

Routine cleaning is crucial in preventing dirt and grime buildup. So, use a mild detergent and water solution to clean your frames, sills, and glass. However, avoid abrasives or chemicals that can damage the finish. 

2. Address condensation:

If you notice condensation on your windows, it’s important to address it promptly. Doing so will prevent mold and mildew growth. Consider contacting a professional window company to inspect the source of the condensation. 

3. Check Seals And weatherstripping:

Inspect the seals and weatherstripping around your windows for signs of wear or damage. Replace any worn-out or damaged seals. Replace any worn-out or damaged seals to maintain proper insulation and prevent drafts. 

4. Lubricate hardware and tracks:

Lubricate hinges, locks, and handles annually to keep them operating smoothly. For sliding windows, clean the tracks of debris and lubricate them with a silicone-based lubricant. This will ensure a smooth operation. 

5. Repaint or refinish as needed:

If you have wooden windows, check for peeling paint or signs of wood damage. It is then essential to repaint or refinish wooden frames as necessary to protect them from moisture and decay. 

6. Inspect for cracks and damage:

Regularly inspect the glass for cracks or damage. If you notice any, replace the glass promptly. This will work to maintain your window’s energy efficiency and security. 

9. Trim overhanging branches:

If you have trees near your windows, trim overhanging branches regularly. This will prevent them from scratching or damaging the glass or frames during windy conditions. 

10. Schedule a professional inspection:

If this is more than you want to address on your own, consider scheduling a professional window inspection at regular intervals. Custom Exteriors offers residential maintenance plans that handle all these steps and inspect your other exterior systems. 

Shopping Basket
Custom Exteriors, LLC BBB Business Review