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Best Window Contractors in Thornton, CO

Our Recommended Top 12

We did the research for you!

  • Licensing
  • User Reviews
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Our goal is to connect people with the best local professionals. We scored Thornton Window Contractors on more than 25 variables across five categories, and analyzed the results to give you a hand-picked list of the best.

42Reviewed

30Curated

12Top Picks

Learn about our selection process.

Providers

featured provider = Featured Provider

12450 Bellaire Drive, Thornton, CO 80241

Expertise.com Rating

Review Sources

Google
4.0 (47)
Yelp
5.0 (2)
Facebook
5.0 (1)

Why choose this provider?

Kelly Construction is a siding contractor that provides window replacement services to clients in and around Thornton. The family-owned and family-operated business assists in the correct insulation of windows to avoid fog and moisture buildup and achieve an energy-efficient structure. It uses brands such as Simonton, Revere, and Milgard to produce airtight and properly sealed windows. In addition, the company undertakes other projects such as roofing, siding, and gutters. Kelly Construction brings over 35 years of experience in the home improvement industry.

  • Energy Efficient Options

405 West 115th Avenue, Northglenn, CO 80234

Expertise.com Rating

Review Sources

Google
4.0 (30)
Yelp
3.0 (13)
Facebook
5.0 (3)

Why choose this provider?

A&M Window Service is a family-owned company that has been offering residential and commercial solutions in Thornton and the surrounding communities since 1987. It repairs windows and doors of all types, including flat glass, insulated glass, and patio doors. Additionally, A&M Window Service offers glass solutions for shower enclosures, mirrors, and decorative glass. The company features an array of over 2,500 window parts that clients can check online. They can also mail in a sample part to have it checked for stocks or possible replacements.

  • Custom Glass
  • Glass & Mirrors

18455 West Colfax Avenue, Golden, CO 80401

Expertise.com Rating

Review Sources

Google
4.7 (19)

Why choose this provider?

Colorado Rockies Windows and Doors is a family-run and independent construction business that has been serving customers in Thornton for the past 35 years. It comprises window and door contractors who install products from trusted brands, such as Pella, Andersen Eagle, and Marvin. They replace heavy-duty windows and doors made from aluminum, Fibrex, vinyl, steel, and wood. The company's installation package includes installation, complete cleanup, old door and window disposal, and building permit processing. It also provides detailed instructions on how to maintain new doors and windows.

  • Fiberglass Window Installation

1847 West 52nd Avenue, Denver, CO 80221

Expertise.com Rating

Review Sources

Google
4.0 (54)
Yelp
5.0 (13)

Why choose this provider?

Colorado Glass & Mirror is an independent home improvement business owned and operated by a local family. It serves residents and business owners in the Thornton area and the surrounding communities. In addition to repairing broken or damaged windows, its professionals can install energy-efficient replacement windows. It can install doors made in different wood species like walnut, African mahogany, and clear alder. Colorado Glass & Mirror has had 20 years of experience working with clients around the Colorado area.

  • Glass & Mirrors

2851 South Parker Road, Aurora, CO 80014

Expertise.com Rating

Review Sources

Google
5.0 (87)
Facebook
5.0 (2)

Why choose this provider?

One Window At a Time is a company that provides renovation solutions to residential, commercial, and industrial space owners within the Thornton metro and its surrounding communities. It offers professional window and door installation services. Its founder, Bruce Hahn, has over 13 years of experience in the industry and personally supervises each project. The company employs experienced installers and carries energy-efficient products as well as a wide selection of materials, such as vinyl, fiberglass, and wood.

  • Glass & Mirrors

12860 West Cedar Drive, Lakewood, CO 80228

Expertise.com Rating

Review Sources

Google
4.0 (33)
Facebook
5.0 (4)

Why choose this provider?

Z Double B is a window and doors contractor serving various areas in Colorado since 2012. The repair and replacement contractor has expanded its services in Thornton. The company accepts commercial and residential projects. Its technicians install customized entry, storm, bi-folding, and multi-sliding doors. They also construct vinyl, wood, metal, fiberglass, and aluminum windows. Zach Baumann, the company owner, practically grew up in the business of home renovations. He is a mechanical engineering degree holder and an AAMA-certified installer.

  • Fiberglass Window Installation

2963 West 91st Place, Denver, CO 80260

Expertise.com Rating

Review Sources

Google
4.0 (37)
Yelp
5.0 (7)
Facebook
5.0 (5)

Why choose this provider?

Egress, Inc., is a family-owned window and door contractor that serves clients from Thornton. The business installs, repairs, and replaces egress escape windows for retrofit into existing homes. It also installs a wide range of upgraded wells from brands like Monarch Quarry View and Rockwell. Led by Jim Dischner, the business has been providing its services to the community for more than 25 years. Egress is the parent company of Window Well Exchange and Dischner Construction Services.

  • Custom Carpentry

4321 Broadway, Denver, CO 80216

Expertise.com Rating

Review Sources

Google
4.6 (28)

Why choose this provider?

Discount Windows & Siding addresses the home improvement needs of clients in Thornton. The business started providing its services to the community in 1984 and has since then served over 100,000 clients. It offers installation for doors and windows that come in various styles, such as traditional, modern, and contemporary. Its professionals provide home visits and site surveys and equip clients with all the information needed to make wise decisions. Moreover, it works with various suppliers, including Milgard, Anlin, Alside, and Lincoln Windows.

  • Custom Carpentry

14309 East 35th Place, Aurora, CO 80011

Expertise.com Rating

Review Sources

Facebook
5.0 (5)
Google
5.0 (4)

Why choose this provider?

Signature Windows + Doors is a company that has been serving Thornton and nearby areas for almost 40 years. It offers window and door installation services to contractors and homeowners. Design services are also available for remodeling needs and to assist clients in choosing the type of materials based on their needs and preferences. Moreover, its team specializes in glass wall installations that cater to modular designs and architectural glazing systems. The business provides a 3D virtual tour for clients to present a wide selection of materials available.

  • Custom Carpentry
  • Custom Glass
  • Fiberglass Window Installation

1020 West 124th Avenue, Westminster, CO 80234

Expertise.com Rating

Review Sources

Google
4.0 (14)
Facebook
5.0 (4)

Why choose this provider?

Smart Windows is a family-owned business that services the window and door requirements in Thornton. It focuses on new construction and replacement windows, heated glass by RGI, and replacement glass. It also crafts entry and patio doors, and thermochromic technology by Ravenbrick. Among its window choices are the slider, hung, awning, and casement windows. Smart Windows has more than 30 years of experience in the window and door business, and it partners with manufacturers like PH Tech, Alside, Cascade, and PH Tech.

  • Custom Carpentry

8795 Ralston Road, Arvada, CO 80002

Expertise.com Rating

Review Sources

Facebook
5.0 (50)
Google
5.0 (9)

Why choose this provider?

Arvada Replacement Windows by Design is a window and door contractor that serves homes and businesses in Thornton and nearby areas. It installs replacement, bow, bay, vinyl substitute, and double-hung windows. It also handles the installation of exterior and front door replacement doors, as well as French patio and sliding doors. Its energy-efficient window and door product range is Energy Star-rated. THe company is one of Remodeling Magazine's Big 50 awardees.

  • Custom Carpentry

13395 Olive Street, Thornton, CO 80602

Expertise.com Rating

Review Sources

Google
4.0 (17)
Yelp
5.0 (4)
Facebook
5.0 (1)

Why choose this provider?

Carlson Siding is a window and door contractor that serves clients from Thornton and its surrounding areas. The business installs, repairs, and replaces a wide range of items, such as storm doors, garage doors, vinyl sidings, and double or triple pane vinyl windows. It also offers Owens or Corning thermal wall insulation. The owner of the business is Rob Carlson, an experienced contractor who is committed to providing clients with high-quality remodeling and home improvement results.

  • Glass & Mirrors

Compare our Top Window Contractors

NameExpertise RatingAddressPromotionsLearn more
Kelly Construction
12450 Bellaire Drive, Thornton, CO 80241
A&M Window Service
405 West 115th Avenue, Northglenn, CO 80234
Colorado Rockies Windows and Doors
18455 West Colfax Avenue, Golden, CO 80401
Colorado Glass & Mirror
1847 West 52nd Avenue, Denver, CO 80221
One Window At a Time
2851 South Parker Road, Aurora, CO 80014
Z Double B
12860 West Cedar Drive, Lakewood, CO 80228
Egress, Inc
2963 West 91st Place, Denver, CO 80260
Discount Windows & Siding
4321 Broadway, Denver, CO 80216
Signature Windows + Doors
14309 East 35th Place, Aurora, CO 80011
Smart Windows
1020 West 124th Avenue, Westminster, CO 80234
Arvada Replacement Windows By Design
8795 Ralston Road, Arvada, CO 80002
Carlson Siding
13395 Olive Street, Thornton, CO 80602

FAQs

  • Introduction

    Properly caring for doors and windows is a big part of keeping a home looking its best. However, finding the right approach to maintenance, repairs, and replacement isn't always easy. These frequently asked questions can provide insight into how to best care for doors and windows, including how to purchase, install, replace, paint, and clean windows and doors throughout a home.

  • How do you paint a front door?

    To paint a front door, all hardware should first be removed. Then, the door should be sanded and cleaned before a coat of paint can be applied. For best results, use an exterior-grade paint-primer combination. Place a drop cloth before painting to prevent damage to flooring.

  • How can you paint a front door without brush marks?

    The best way to paint a door without brush marks is to avoid using a brush. A paint roller can be used to paint most surfaces on a door. A small brush may be required to touch up small areas that a paint roller can't reach.

  • What are some ways to pick an excellent front door color?

    Picking a paint color is largely about aesthetics and preferences. Consider factors like the exterior of a home, landscaping, and colors that are used elsewhere in the home. Reds, blues, and greens can be lovely accent colors, and white and gray go with almost anything.

  • What paint do you use to paint a front door?

    Always use an exterior-grade paint on front doors. Paints used for interior walls aren't designed to withstand heat, rain, snow, sleet, or hail and will likely peel or fade quickly if used outdoors. Using a paint-primer combination can minimize the amount of coats required to fully paint a front door. 

  • How do you keep mosquitoes away from the front door?

    Installing a screen door is among the most effective ways to keep mosquitoes away. Homeowners can also remove any standing water near the door, keep grass cut short, plant mosquito-repellent plants, and use mosquito lights to prevent unwanted invaders.

  • How do you install a front door?

    First, slide the pins out of the hinges to free the old door. Use the old door as a pattern for where to place hinges on the new door. Create mortises with a sharp wood chisel and install the hinges. Then, put the door in place and replace the pins.