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Northern Colorado Window Company | Energy-Efficient Windows Built for the Front Range

Experienced Pella, Anlin, & Milgard Installation | Wood, Fiberglass & Architectural Metal Clad Windows

Custom Exteriors provides professional residential window replacement services across Greeley, Loveland, Fort Collins, and Windsor. We install high-performance vinyl and composite windows from quality brands like Pella, Milgard, and Anlin, engineered specifically to handle intense high-altitude UV exposure and rapid temperature swings. We replace old, drafty frames with high-efficiency windows designed to lower your energy bills. During the installation, our local team focuses strictly on proper structural alignment and applying a heavy, airtight weather seal.

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Custom Exteriors Partners, Awards & Accreditations

Vinyl Window Replacement

High-Performance Vinyl Window Installation

We install energy-efficient vinyl windows designed specifically to handle the Front Range climate. These low-maintenance frames withstand intense high-altitude UV rays and rapid temperature drops without warping, cracking, or peeling. Every window features multi-chambered vinyl construction and advanced weatherstripping to eliminate drafts and lower your seasonal energy bills. Our local team manages the entire process, ensuring a precise structural fit and a completely airtight seal on every opening.

Get new vinyl windows

Glass Patio Door Replacement

Energy-Efficient Sliding Glass Door Installation in Northern Colorado

We replace old, drafty patio doors with high-performance sliding glass systems built for the Colorado climate. These doors feature heavy-duty vinyl or composite frames, advanced weatherstripping, and dual-pane glass engineered to block intense UV rays and keep winter drafts out of your living space. The smooth-gliding roller systems ensure easy operation, while multi-point locking mechanisms provide maximum security for your home. Our local crew handles the entire installation to guarantee a perfectly square fit and an airtight seal.

Request a Patio door Estimate

Energy & Home Value Upgrades

Proactive Preventative Maintenance & Rapid Leak Mitigation

Replacing old windows offers one of the highest returns on investment for exterior home improvements. Installing new, energy-efficient frames immediately lowers your heating and cooling bills. Beyond monthly utility savings, updated windows significantly boost your home’s curb appeal and overall market value, allowing you to recoup a major portion of the project cost upon resale. It is a practical upgrade that pays for itself over time through lower energy usage and increased home equity.

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Custom Window replacement

How to Choose the Right Replacement Windows for Your Home

Selecting the right replacement windows requires balancing material performance, regional climate needs, and installation quality. The choice starts with picking a frame material, such as low-maintenance vinyl, durable composite, or traditional wood, that matches both your property’s architectural style and your long-term maintenance goals. There is so much to consider including, technical glass specifications like low U-factors and advanced UV-blocking coatings. Find out how to choos the perfect window!

Read the Full Window Guide

Planning a Window Replacement in Northern Colorado: What You Need to Know

Selecting the right replacement windows for your home involves balancing product durability, local climate performance, and installation quality. Because this is a long-term investment, making an informed decision requires looking closely at how different materials and installation methods impact your home’s energy efficiency.

A successful window replacement project relies on three primary factors:

  • Frame Material Selection: Your frames must align with your budget and structural needs. Low-maintenance vinyl offers excellent thermal performance and value, while composite, wood, or fiberglass options provide distinct architectural benefits for specific property styles or strict HOA requirements.
  • Glass Performance Metrics: Northern Colorado weather requires glass packages engineered for high-altitude UV exposure and rapid temperature drops. Choosing dual-pane or triple-pane units with advanced low-E coatings and low U-factors is what directly reduces drafts and lowers utility bills.
  • Contractor Qualifications: The performance of any window depends entirely on the installation. Verify that your contractor is fully licensed and insured, utilizes experienced local crews rather than temporary labor, and guarantees precise structural alignment and airtight weather sealing.

To help you plan your project and establish a reliable budget, we have developed a tool that removes the guesswork from initial pricing. Use our new window cost estimator calculator below to generate a realistic cost range for your project in under two minutes.

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New Window Cost Estimator

Answer a few quick questions to see your estimate.

Custom Exteriors

Your trusted Colorado window company: Custom Exteriors

Custom Exteriors offers top-tier replacement windows backed by a strong warranty and unmatched expertise. We partner with reputable manufacturers like Pella and Anlin, guaranteeing that you receive high-quality products known for their durability and energy efficiency. Our commitment to quality means that your new windows will perform well for years, keeping your home comfortable and secure. We understand the importance of reliability, so we work only with the most skilled installers who are meticulous in their work, ensuring a flawless fit and finish every time.

What really sets us apart, though, is our dedication to delivering excellent service alongside our quality products. Our team’s expertise and attention to detail guarantee that your window replacement project is handled with care from start to finish. We believe in providing homeowners with a seamless experience backed by a warranty that reflects our confidence in both the windows we install and the professionals who install them. Trust Custom Exteriors for a window replacement experience that prioritizes quality, precision, and customer satisfaction.

Here’s what sets us apart: 

  • Colorado Mountain Roof Replacement Experience
  • Fire-Resistant, High-Quality Materials
  • Customized Solutions
  • Attention To Detail
  • Unbeatable Customer Service
  • Industry-Leading Warranty

Our Other
Services:

Roofing

Siding

Gutters

Exterior Painting

Brand name windows can increase the overall cost of your replacement windows
Commercial window installation
Commercial door installations

Custom Exteriors: Colorado's top choice for window replacement

At Custom Exteriors, we understand that windows are more than just glass. They are your view to the world, an extension of your home’s style, and an essential part of your home or business’ functional systems. That’s why we’ve dedicated ourselves to being the preferred choice for window replacement across Colorado. With decades of hands-on experience in window replacement, our window team is ready to assist in your home improvement project. 

Diverse window Selection

Whether your taste is modern or classic, our extensive range of window styles and options has something for every style. We specialize in: 

  • Our vinyl replacement windows are durable, energy-efficient, and budget-friendly.
  • Custom Exteriors offers fiberglass replacement windows known for their strength and long lifespan.
  • Our wood replacement windows offer a timeless look with a classic beauty.

No matter your choice, you’ll find that our replacement windows not only enhance the beauty of your space but also improve energy efficiency, reducing your heating and cooling costs. Your new windows or doors may even be eligible for a tax credit!

Commercial and Residential Expertise

Your needs are unique, whether it’s for your home or business. We’ve got you covered with: 

  • Our residential windows and doors transform your home with custom solutions that fit your lifestyle.
  • Our commercial windows and doors combine functionality and aesthetic appeal, enhancing your business.

Beyond windows: Exteriors that make a statement

But we don’t stop at windows. Our expertise extends to: 

Why Choose Custom Exteriors?

Custom Exteriors has the expertise to handle any window replacement job

Expertise

Decades of industry experience

  • Trusted Exterior Improvement Expert
  • Decades Of window replacement experience
  • Skilled and knowledgeable window installers
Custom Exteriors only installs high quality window replacements

Quality

Quality window manufacturers

Custom Exteriors customizes your window choices to meet your needs

Customization

Tailored replacement solutions

Custom Exteriors has an excellent reputation

Customer Satisfaction

track record of satisfied customers

I need new windows

The clear choice for your window needs

At Custom Exteriors, we understand that windows play an essential role in both the curb appeal and the function of your home. Your windows directly affect your home’s energy efficiency and security, so when choosing replacement windows, numerous questions arise. Questions about cost, window style, and the necessity of an upgrade all play into the decision-making process. Fortunately, our skilled window consultants combine decades of experience with an extensive knowledge base and unbeatable customer service to help you make an informed decision about your window replacement. 

We’re here to help you identify the signs that your windows need replacing and to navigate the complex choices of modern, energy-efficient windows. Trust us to be your partner in choosing the right replacement windows, blending functionality, efficiency, and aesthetics to enhance your living space. 

Understanding your needs

When you’re thinking about getting new windows, it’s essential to consider a few key things. This will ensure you make an informed decision that results in new windows that are both beautiful and functional. When replacing your windows, Custom Exteriors recommends you consider:

  • Architectural Style
  • Local Climate Considerations
  • Energy-Efficiency Goals

By considering these factors, you’ll be on your way to finding windows that fit your home perfectly. The window consultants at Custom Exteriors are ready to help you start your journey towards a more beautiful and energy-efficient home or business. 

Custom Exteriors can install sunroom windows like these in homes

FAQs

The average is around 45 minutes per window bearing in mind any discovered rotten wood.

Fortunately, Custom Exteriors services the entire state of Colorado and parts of Wyoming. Our skilled window replacement team will come to you anywhere in the state of Colorado!

You can replace broken glass with a glass company, however it does not change the quality or efficiency of the old window. In most cases, someone who just replaces the glass ends up doing a full replacement at a later date.

Due to a High Quality Window Replacement helping to reduce the amount of your utilities all year round, anytime is a good time to replace your windows.

There are too many to list, just be sure to invest in a Quality Window that will be Guaranteed to last a lifetime. Cheap things are not good and Good Things are not Cheap. Our philosophy, if you can’t afford to do it once and do it right, keep your money and wait till you can.

There are a number of window styles available due to the Minimum and Maximum sizes that windows can and cannot be made.

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