Top-rated window pros.

Get matched with top window pros in Longmont, CO

Enter your zip and get matched with up to 5 pros

Need a pro for your window service project in Longmont, CO?

Select your specific project to find the pro for you.

TRUSTED BY LONGMONT, CO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon376
    Verified window services reviews

Find Window pros in Longmont

Avatar for Empire Glass Company

Empire Glass Company

4.90(
121
)
Approved Pro

Empire Glass Company

4.90(
121
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
7 years of experience

Welcome to Empire Glass Company, we are excited to exceed your expectations! As experts with many years of experience, we will handle your needs with the high quality expertise that your home deserves. We offer competitive prices and customer satisfaction is our number one priority. Call us now!

"I am VERY please with Empire Glass in Loveland, CO regarding the entire process from measurement to installation! They gave me updates and sent experienced fine young professionals to complete the installation. They were careful, leaving NO damage to either the interior or exterior walls which corresponded with my living room space. I’m so glad I switched my order to Empire Glass! I can without reservation, highly recommend them."

Jacqueline L on October 2025

Welcome to Empire Glass Company, we are excited to exceed your expectations! As experts with many years of experience, we will handle your needs with the high quality expertise that your home deserves. We offer competitive prices and customer satisfaction is our number one priority. Call us now!

"I am VERY please with Empire Glass in Loveland, CO regarding the entire process from measurement to installation! They gave me updates and sent experienced fine young professionals to complete the installation. They were careful, leaving NO damage to either the interior or exterior walls which corresponded with my living room space. I’m so glad I switched my order to Empire Glass! I can without reservation, highly recommend them."

Jacqueline L on October 2025


Avatar for EGRESS INC

EGRESS INC

4.90(
61
)
Approved Pro

EGRESS INC

4.90(
61
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
26 years of experience

Adding a professionally installed egress window & well not only protects your family by providing a reliable escape, it also transforms your basement living area with beautiful, natural light. Egress, Inc is the largest egress window & well specialist in the Rocky Mountain Region. From simple expansions to engineer structural modifications, Egress Inc has the knowledge and experience to professionally & efficiently handle all your egress window & well needs. In addition to egress windows our services include water mitigation, replacement windows and walkout basement options, in addition to replacement window wells of any size, in a variety of options including steel, fiberglass, concrete and custom-designed & hand-built stone and timber. Owners Jim & Loralee Dischner share their 30 years of construction & public relations experience to provide you with expert installations and outstanding customer service. Licensed & insured, we guarantee our work which helps ensure your ultimate satisfaction. Egress, Inc supports trusted and caring employees, not fly-by-night subcontractors. The Egress, Inc family sincerely cares about your project work together to make it flow seamlessly from start to finish. Let Egress, Inc transform your basement into a beautiful and safe living area!

"They are fantastic workers. I felt so comfortable with Jim, the boss and his crew, I left for work for a few hours."

Nancy D on March 2022

Adding a professionally installed egress window & well not only protects your family by providing a reliable escape, it also transforms your basement living area with beautiful, natural light. Egress, Inc is the largest egress window & well specialist in the Rocky Mountain Region. From simple expansions to engineer structural modifications, Egress Inc has the knowledge and experience to professionally & efficiently handle all your egress window & well needs. In addition to egress windows our services include water mitigation, replacement windows and walkout basement options, in addition to replacement window wells of any size, in a variety of options including steel, fiberglass, concrete and custom-designed & hand-built stone and timber. Owners Jim & Loralee Dischner share their 30 years of construction & public relations experience to provide you with expert installations and outstanding customer service. Licensed & insured, we guarantee our work which helps ensure your ultimate satisfaction. Egress, Inc supports trusted and caring employees, not fly-by-night subcontractors. The Egress, Inc family sincerely cares about your project work together to make it flow seamlessly from start to finish. Let Egress, Inc transform your basement into a beautiful and safe living area!

"They are fantastic workers. I felt so comfortable with Jim, the boss and his crew, I left for work for a few hours."

Nancy D on March 2022


Avatar for JM Window Cleaning

JM Window Cleaning

4.86(
51
)
Approved Pro

JM Window Cleaning

4.86(
51
)
Approved Pro
Super Service Award
Customers say: True professional
2 years of experience
Free onsite estimate

JM Window Cleaning proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

" "

Andrew B on December 2025

JM Window Cleaning proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

" "

Andrew B on December 2025


Avatar for GS Exterior Experts

GS Exterior Experts

4.96(
129
)
Approved Pro

GS Exterior Experts

4.96(
129
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
27 years of experience

GS Exterior Experts is a Local exterior remodeling company since 1999 specializing in Residential FULL HOUSE SIDING REPLACEMENT-WINDOWS-DECKS & ROOFING. View some of our reviews and you will see that we consistently exceed our expectations! Our customers come first, and every job is complete in a timely manner with 100% satisfaction. We offer free estimates and financing on all our services and insure you our prices are the best and most important quality. We are honored to win the Angie's list super service award every year since 2011. We are also a James Hardie ELITE preferred contractor in CO which means you get the best of James Hardie installations with a full non pro rated warranty. GS Exterior Experts is licensed and insured BBB members with very good customer satisfaction rating. Setting ourselves apart by offering unique craftsmanship installation, providing your home unique curb appeal that sets your home apart from your neighbors for years to come.

"From start to finish, the GS folks were exceptional. Keith Vigil clearly explained details of the project to me, Sandra in the office was always there to field my questions, the demo and siding crew were hard working and pleasant under the guidance of Edwin's daily presence, and Oswald faithfully and capably handled any finishing touches to the project. This is a five-star company with devoted and talented employees!"

Pam L on November 2025

GS Exterior Experts is a Local exterior remodeling company since 1999 specializing in Residential FULL HOUSE SIDING REPLACEMENT-WINDOWS-DECKS & ROOFING. View some of our reviews and you will see that we consistently exceed our expectations! Our customers come first, and every job is complete in a timely manner with 100% satisfaction. We offer free estimates and financing on all our services and insure you our prices are the best and most important quality. We are honored to win the Angie's list super service award every year since 2011. We are also a James Hardie ELITE preferred contractor in CO which means you get the best of James Hardie installations with a full non pro rated warranty. GS Exterior Experts is licensed and insured BBB members with very good customer satisfaction rating. Setting ourselves apart by offering unique craftsmanship installation, providing your home unique curb appeal that sets your home apart from your neighbors for years to come.

"From start to finish, the GS folks were exceptional. Keith Vigil clearly explained details of the project to me, Sandra in the office was always there to field my questions, the demo and siding crew were hard working and pleasant under the guidance of Edwin's daily presence, and Oswald faithfully and capably handled any finishing touches to the project. This is a five-star company with devoted and talented employees!"

Pam L on November 2025


Avatar for GS Exterior Experts Corp.

GS Exterior Experts Corp.

5.00(
17
)
Approved Pro

GS Exterior Experts Corp.

5.00(
17
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
27 years of experience

When it comes to enhancing the aesthetic appeal and durability of your home through James Hardie siding, choosing GS Exterior Experts for your siding replacement is a decision that prioritizes quality, expertise, and customer satisfaction. 1. James Hardie Specialists: At GS Exterior Experts, we specialize in James Hardie siding installation. Our team of professionals is well-versed in the unique features and installation techniques associated with James Hardie products. This specialization ensures that your siding replacement is carried out with precision and expertise, maximizing the performance and longevity of your siding.

"Oswald and his crew were fast, efficient and the house looks amazing! What an improvement from what we had before. Ernest was great too, as he handled our confusion of "fascia and soffits" but we got there in the end. After siding was installed, we used Bermudez Paint, and they arrived the next day to start their project. They were done 3 days later, thanks to rain delays. I highly recommend Bermudez Paint as well. Their team was also amazing, fast, and incredibly polite."

Christine R on July 2024

When it comes to enhancing the aesthetic appeal and durability of your home through James Hardie siding, choosing GS Exterior Experts for your siding replacement is a decision that prioritizes quality, expertise, and customer satisfaction. 1. James Hardie Specialists: At GS Exterior Experts, we specialize in James Hardie siding installation. Our team of professionals is well-versed in the unique features and installation techniques associated with James Hardie products. This specialization ensures that your siding replacement is carried out with precision and expertise, maximizing the performance and longevity of your siding.

"Oswald and his crew were fast, efficient and the house looks amazing! What an improvement from what we had before. Ernest was great too, as he handled our confusion of "fascia and soffits" but we got there in the end. After siding was installed, we used Bermudez Paint, and they arrived the next day to start their project. They were done 3 days later, thanks to rain delays. I highly recommend Bermudez Paint as well. Their team was also amazing, fast, and incredibly polite."

Christine R on July 2024


Avatar for Power Home Remodeling

Power Home Remodeling

4.77(
154
)
Approved Pro

Power Home Remodeling

4.77(
154
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
34 years of experience

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


Avatar for Keefer Home Enhancements LLC

Keefer Home Enhancements LLC

5.00(
13
)
Approved Pro

Keefer Home Enhancements LLC

5.00(
13
)
Approved Pro
Super Service Award
1 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"todd and his crew did an excellent, thorough job. start to finish. honestly, he did everything he said they were going to do, on time, priced right, the whole thing. Perfect!"

garret h on September 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"todd and his crew did an excellent, thorough job. start to finish. honestly, he did everything he said they were going to do, on time, priced right, the whole thing. Perfect!"

garret h on September 2025


Avatar for A to Z Remodel & Repair LLC

A to Z Remodel & Repair LLC

5.00(
19
)
Approved Pro

A to Z Remodel & Repair LLC

5.00(
19
)
Approved Pro
Super Service Award
2 years of experience
Free onsite estimate

We're a locally owned company with over 20 years of experience specializing in home additions, kitchen and bathroom remodels, and general home improvements. Our skilled professionals deliver detailed workmanship and bilingual customer support. We take great pride in ensuring complete satisfaction and building lasting relationships with all our clients.

"all excellent "

Dale H on December 2025

We're a locally owned company with over 20 years of experience specializing in home additions, kitchen and bathroom remodels, and general home improvements. Our skilled professionals deliver detailed workmanship and bilingual customer support. We take great pride in ensuring complete satisfaction and building lasting relationships with all our clients.

"all excellent "

Dale H on December 2025


Avatar for True View Windows and Glass

True View Windows and Glass

4.69(
390
)
Approved Pro

True View Windows and Glass

4.69(
390
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
26 years of experience

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.

"I was patient to wait 5 plus months to replace 3 windows at my home. But now that they got replace they did a bad job installation them. The new windows are sticking out almost a 1/4 inch out, they where flush before that, I wouldn’t hire them again did a terrible job installing them, be careful who u hire not worthed."

Jesus S on October 2022

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.

"I was patient to wait 5 plus months to replace 3 windows at my home. But now that they got replace they did a bad job installation them. The new windows are sticking out almost a 1/4 inch out, they where flush before that, I wouldn’t hire them again did a terrible job installing them, be careful who u hire not worthed."

Jesus S on October 2022


Avatar for Colorado Egress

Colorado Egress

4.86(
110
)
Approved Pro

Colorado Egress

4.86(
110
)
Approved Pro
Super Service Award
Customers say: Terrific value
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
19 years of experience

Colorado Egress is a local, Denver company, focused entirely on egress escape windows. As a super specialist, we have the experience and the knowledge of Colorado requirements that you're looking for. We have kept our company small and precise and we get the job done right. We deliver on timely scheduling, quality craftsmanship and thorough communication every step of the way. Adding egress windows is the best return on investment you can make in a basement. In addition to improving safety, they substantially increase home value and you will love how much brighter and more open basement rooms can become with the addition of egress windows. Call today for a comprehensive, no surprises, quote. We look forward to serving you.

"Drew, Jose and the crew were all fantastic. They bid on the lower end of others and were good to work with. Work was scheduled quickly and started on time. Even when there was an injury to the crew Drew made sure to keep me updated and made sure to make it right. I’d definitely book again!"

Drew D on October 2025

Colorado Egress is a local, Denver company, focused entirely on egress escape windows. As a super specialist, we have the experience and the knowledge of Colorado requirements that you're looking for. We have kept our company small and precise and we get the job done right. We deliver on timely scheduling, quality craftsmanship and thorough communication every step of the way. Adding egress windows is the best return on investment you can make in a basement. In addition to improving safety, they substantially increase home value and you will love how much brighter and more open basement rooms can become with the addition of egress windows. Call today for a comprehensive, no surprises, quote. We look forward to serving you.

"Drew, Jose and the crew were all fantastic. They bid on the lower end of others and were good to work with. Work was scheduled quickly and started on time. Even when there was an injury to the crew Drew made sure to keep me updated and made sure to make it right. I’d definitely book again!"

Drew D on October 2025

...
Showing 1-10 of 1609
Windows questions, answered by experts

Bifold windows work by using a track that allows panels to slide to the side and "stack" so they take up minimal space, leaving the largest opening. The sashes connect to each other with butt hinges or concealed hinges and to the window frame with the same type of hinges you’d find on a casement window. Some manual bifold windows also have casement stays or another piece of hardware to keep your windows in place when they’re open.

Storm windows have about the same life span as standard windows—between 20 and 30 years. Vinyl and wood storm windows last longer than aluminum, but they all fall within that life span range. Of course, how long your storm windows last will depend on how much severe weather they see. Direct impacts, in particular, can quickly reduce how long your storm windows last.

Contrary to popular belief, wavy glass in older homes isn't caused by warping. The blowing technique used to create windows in homes dating back to the 1700s, 1800s, and early 1900s left behind small bubbles that create a wavy effect. If a glass window is functional, there's no need to consider wavy glass damaged. In fact, many homeowners prefer the old charm of wavy glass.

Glass block windows offer several unique benefits over traditional windows, and they create a much more unique look. These specialty windows offer added privacy while allowing natural light into the space, which is why they’re a popular choice for bathroom features. They also provide increased security as glass blocks do not open unlike traditional windows. Plus, they provide increased energy efficiency, lowering energy costs and preventing drafts.

Because bay windows are a combination of three windows, there are many options for how wide or tall they can be. That said, individual windows come in standard sizes, and you can use those as a guide for the width and height of your bay window.

The Longmont, CO homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"