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*The Angi rating for Window And Door Contracting companies in Thornton, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window And Door Contracting needs.
*The HomeAdvisor rating for Window And Door Contracting companies in Thornton, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window And Door Contracting needs.
Last update on December 13, 2025
Find Window and door contractors in Thornton
VELUX America
VELUX America
Start with skylights! At VELUX, our mission is clear: we're dedicated to transforming your space with natural light and fresh air with skylights. Whether you're looking to replace old skylights or install brand-new ones, we will guide you every step of the way. Why Choose VELUX? =================== When it comes to skylights and roof windows, VELUX is the global leader. Here's why you should trust us to transform your home: 1. Innovation and Quality: VELUX skylights are renowned for their innovation and unmatched quality. They're designed to let in abundant natural light while keeping your space leak-free and energy-efficient. 2. Huge Product Selection: You’ll have access to a wide range of skylight options, from fixed to vented skylights. And we are here to help tailor the selection to suit your specific needs and style preferences. 3. Expertise: We take pride in what we do at VELUX, and our team is highly trained to guide you through the entire process. From selecting the perfect product for your space to providing valuable recommendations, we're committed to making sure your skylight project is a complete success. 4. Professional Installation Partners: We don't stop at product selection and recommendations; we also match you with a VELUX-trained installer who will handle the installation of your skylights with precision and expertise.
Start with skylights! At VELUX, our mission is clear: we're dedicated to transforming your space with natural light and fresh air with skylights. Whether you're looking to replace old skylights or install brand-new ones, we will guide you every step of the way. Why Choose VELUX? =================== When it comes to skylights and roof windows, VELUX is the global leader. Here's why you should trust us to transform your home: 1. Innovation and Quality: VELUX skylights are renowned for their innovation and unmatched quality. They're designed to let in abundant natural light while keeping your space leak-free and energy-efficient. 2. Huge Product Selection: You’ll have access to a wide range of skylight options, from fixed to vented skylights. And we are here to help tailor the selection to suit your specific needs and style preferences. 3. Expertise: We take pride in what we do at VELUX, and our team is highly trained to guide you through the entire process. From selecting the perfect product for your space to providing valuable recommendations, we're committed to making sure your skylight project is a complete success. 4. Professional Installation Partners: We don't stop at product selection and recommendations; we also match you with a VELUX-trained installer who will handle the installation of your skylights with precision and expertise.

Modern Dimension Pathways
Modern Dimension Pathways
-Modern Dimension Pathways is a company where innovation and modern design meets living spaces. We are passionate about transforming peoples ordinary living spaces into dream state realities and modern sanctuaries. Our mission is to redefine the way people live and experience their environments by using moderns designs and innovative ideas. (Follow if your interested in Modern architecture, hardscape
"He was very professional and took care of the job. He was really good."
Janet O on December 2025
-Modern Dimension Pathways is a company where innovation and modern design meets living spaces. We are passionate about transforming peoples ordinary living spaces into dream state realities and modern sanctuaries. Our mission is to redefine the way people live and experience their environments by using moderns designs and innovative ideas. (Follow if your interested in Modern architecture, hardscape
"He was very professional and took care of the job. He was really good."
Janet O on December 2025

Deans Design and Remodeling
Deans Design and Remodeling
Deans Design and Remodeling is a trusted name in the construction and contracting industry, specializing in residential and commercial renovations. With a commitment to quality craftsmanship and customer satisfaction, the company offers tailored remodeling solutions that enhance the value, functionality, and aesthetics of every space. Their team combines innovative design expertise with hands-on construction experience, ensuring each project is delivered on time and within budget.
"Kyle and Justin Dean demoed, redesigned, and built 2 decks and a pergola for me. They are professional and provide outstanding quality work. They are knowledgeable and had great design ideas for my projects. Communicated well with me on all work and costs. Highly recommend and will use again."
Leigh R on June 2025
Deans Design and Remodeling is a trusted name in the construction and contracting industry, specializing in residential and commercial renovations. With a commitment to quality craftsmanship and customer satisfaction, the company offers tailored remodeling solutions that enhance the value, functionality, and aesthetics of every space. Their team combines innovative design expertise with hands-on construction experience, ensuring each project is delivered on time and within budget.
"Kyle and Justin Dean demoed, redesigned, and built 2 decks and a pergola for me. They are professional and provide outstanding quality work. They are knowledgeable and had great design ideas for my projects. Communicated well with me on all work and costs. Highly recommend and will use again."
Leigh R on June 2025

Power Home Remodeling
Power Home Remodeling
As the nation’s largest full-service exterior home remodeler, we are backed by over 1,000+ Angi Super Service awards and more than one million happy customers. Why? Because we treat each job as an audition. An opportunity to prove ourselves to you. And the results speak for themselves. So make your home all it was meant to be with our unrivaled exterior services. Contact us today for a free, no obligation estimate on replacement windows, siding, doors, or attic insulation.
"From beginning to end they were professional and on task. The install crew was polite, efficient and did a great job. They also cleaned up after the job was completed. Great company!"
Lisa S on December 2025
As the nation’s largest full-service exterior home remodeler, we are backed by over 1,000+ Angi Super Service awards and more than one million happy customers. Why? Because we treat each job as an audition. An opportunity to prove ourselves to you. And the results speak for themselves. So make your home all it was meant to be with our unrivaled exterior services. Contact us today for a free, no obligation estimate on replacement windows, siding, doors, or attic insulation.
"From beginning to end they were professional and on task. The install crew was polite, efficient and did a great job. They also cleaned up after the job was completed. Great company!"
Lisa S on December 2025

BK Contractors
BK Contractors
Need help with a home renovation project? We began our family owned business serving the Metro Denver area more than 15 years ago. We are experts in exterior and interior remodeling projects and are happy to speak with you about your home conversion. We particularly love siding, windows, exterior doors, and full home interior remodeling. We have been an Award Winning business on Angi for over 10 years. We have employees which have worked with us for many years. Quality and customer satisfaction have always been our goal. By working with the best materials in the industry and keeping our business focused, we are able to deliver quality workmanship for your home project. Please call, email or send a message now for free estimates anywhere in the Denver Metro area. We can't wait to meet you.
"Very diligent crew; all nice, efficient, on time, friendly and did excellent work. I highly recommend."
Linda B on October 2024
Need help with a home renovation project? We began our family owned business serving the Metro Denver area more than 15 years ago. We are experts in exterior and interior remodeling projects and are happy to speak with you about your home conversion. We particularly love siding, windows, exterior doors, and full home interior remodeling. We have been an Award Winning business on Angi for over 10 years. We have employees which have worked with us for many years. Quality and customer satisfaction have always been our goal. By working with the best materials in the industry and keeping our business focused, we are able to deliver quality workmanship for your home project. Please call, email or send a message now for free estimates anywhere in the Denver Metro area. We can't wait to meet you.
"Very diligent crew; all nice, efficient, on time, friendly and did excellent work. I highly recommend."
Linda B on October 2024

Window Nation Denver
Window Nation Denver
At Window Nation, we know replacement windows. We’re third-generation window replacement experts who have been lucky to provide homeowners replacement windows, siding, and doors for over fifteen years. We opened our first showroom in Maryland in 2006, quickly growing to serve homeowners in cities across the country – and we’re not stopping there. We’re grateful for every homeowner who has trusted us to upgrade their most important asset: their home. We’ve learned a lot about home improvement over the years, but the most important thing we learned isn’t about window replacement. We learned the home improvement industry isn’t about offering the best windows, siding and doors; it’s about the relationships we build with our customers.
At Window Nation, we know replacement windows. We’re third-generation window replacement experts who have been lucky to provide homeowners replacement windows, siding, and doors for over fifteen years. We opened our first showroom in Maryland in 2006, quickly growing to serve homeowners in cities across the country – and we’re not stopping there. We’re grateful for every homeowner who has trusted us to upgrade their most important asset: their home. We’ve learned a lot about home improvement over the years, but the most important thing we learned isn’t about window replacement. We learned the home improvement industry isn’t about offering the best windows, siding and doors; it’s about the relationships we build with our customers.

Fullerton Handyman Service L.L.C
Fullerton Handyman Service L.L.C
Fullerton Handyman Service is a new handyman service. We specialize in everything that you need fix from light fixtures to plumbing, heating, building kitchen island and even cat walls. There is nothing that we can't fix and help for you. We are a small family own business, we are willing to help with anything . So call us and we will be there.
"Completed the work and hauled away the wood. Reasonable price, I recommend Patrick and his team."
Maria R on October 2025
Fullerton Handyman Service is a new handyman service. We specialize in everything that you need fix from light fixtures to plumbing, heating, building kitchen island and even cat walls. There is nothing that we can't fix and help for you. We are a small family own business, we are willing to help with anything . So call us and we will be there.
"Completed the work and hauled away the wood. Reasonable price, I recommend Patrick and his team."
Maria R on October 2025

GreenThumb Total Exteriors
GreenThumb Total Exteriors
GreenThumb Total Exteriors provides expert exterior services including siding, roofing, painting, gutters, and windows. We deliver quality craftsmanship, honest estimates, and lasting results for Colorado homeowners. Your home’s exterior is our passion — we keep it looking great and protected year-round.
"Working with the Green Thumb was a great experience! They were professional, punctual and always timely in responses to questions and coordination for the project! "
Kathryn T on October 2025
GreenThumb Total Exteriors provides expert exterior services including siding, roofing, painting, gutters, and windows. We deliver quality craftsmanship, honest estimates, and lasting results for Colorado homeowners. Your home’s exterior is our passion — we keep it looking great and protected year-round.
"Working with the Green Thumb was a great experience! They were professional, punctual and always timely in responses to questions and coordination for the project! "
Kathryn T on October 2025

True View Windows & Glass
True View Windows & Glass
True View is committed to providing outstanding customer service and custom solutions for all your glass and window needs. When you choose True View, you’re partnering with a licensed, bonded, and insured glass replacement contractor with an impressive track record. We aim to meet or exceed any expectations you may have by not just providing quality work, but exceptional customer service as well. We’ll work with you every step of the way. We’ll listen. We’ll answer your questions. And most importantly, we’ll make sure that the job we do for you is done right.
"It was perfect."
Tinelle L on April 2021
True View is committed to providing outstanding customer service and custom solutions for all your glass and window needs. When you choose True View, you’re partnering with a licensed, bonded, and insured glass replacement contractor with an impressive track record. We aim to meet or exceed any expectations you may have by not just providing quality work, but exceptional customer service as well. We’ll work with you every step of the way. We’ll listen. We’ll answer your questions. And most importantly, we’ll make sure that the job we do for you is done right.
"It was perfect."
Tinelle L on April 2021

Clear View Windows Limited LLC
Clear View Windows Limited LLC
We are a Pella Approved Contractor. We install Pella brand windows-vinyl, wood, and fiberglass. We pride ourselves on the quality work we provide, while delivering great customer service! Call -or- click to schedule an estimate today!
We are a Pella Approved Contractor. We install Pella brand windows-vinyl, wood, and fiberglass. We pride ourselves on the quality work we provide, while delivering great customer service! Call -or- click to schedule an estimate today!
FAQs for window and door contracting projects in Thornton, CO
Door installation usually takes three and four hours, including removing the old door and frame, fitting the new door and frame in place, shimming it to make sure it’s perfectly level, and making adjustments to the hinges and locking mechanisms to ensure proper functionality. A door-hanging professional can replace an interior door in between one and two hours. Door installation will take significantly longer if your installer needs to create a wall opening, and it can take less time if the existing door frame remains.
If you have a problem with your window, such as broken glass, minor leaks, or a problem with your window being stuck, repairing the broken part might be a cheaper option than replacing the entire window. However, if you have a deteriorating window frame or major leaks, buying a new window will be the better long-term solution.
The average cost to install a door is around $1,100, but you could pay anywhere from $150 for a hollow-core interior door installation up to $2,000 or a high-end exterior door installation. There are a few cost factors to consider to get an accurate price, including whether your wall opening exists, the type of door, the quality and security of the door, whether you need to replace the frame, and the door size. You can expect to pay $150 to $700 for a standard 36-by-80-inch door and between $400 and $1,600 for an 80-by-48-inch door.
Window replacement costs between $180 and $410 per window, or an average of $280 per window. However, your specific replacement job could cost as little as $100 or as much as $750. Factors such as frame material, the number of windows you need, and the type of glass you order all impact the overall cost. For example, simple double-glazed windows will cost $3 to $6 per square foot, but the stronger tempered glass ranges from $12 to $14 per square foot.
It’s possible to install a door yourself if the wall opening already exists, but the work is rather complicated, and a professional installation is usually well worth the investment. For your door to work and close properly, you’ll need to shim and level the door frame in your wall perfectly, which can be difficult. Additionally, we recommend you always hire a professional door installer to place an exterior door, as mistakes during the installation process can lead to poor security for your home.
The Thornton, CO homeowners’ guide to window and door contracting services
From average costs to expert advice, get all the answers you need to get your job done.

The frame is a crucial part of a door’s looks and proper functioning. Here’s how much you can expect to pay to replace a door frame in your home.

French doors upgrade your space and fill it with natural light. Use this guide so that you can accurately budget the cost to install French doors.
•The cost to install a pocket door includes a few more line items than other designs. Here's what to expect from pocket door costs at each stage in the process.

A storm door offers protection, security, and energy savings, but do you need one? Learn the pros and cons to see if a storm door is right for your home.

If you are wondering who to hire to install weather stripping on your door, we share the best experts for fixing those pesky air gaps.

Is an unsightly hole in your interior door driving you crazy? Use this DIY guide on how to fix a hole in a door to get the job done in under an hour.
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