Top-rated window and door contractors.

Best window and door contractors near Thornton, CO

Enter your zip and get matched with up to 5 pros

Need a pro for your window and door contracting project in Thornton, CO?

Select your specific project to find the pro for you.

TRUSTED BY THORNTON, CO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.3k+
    Verified window and door contracting services reviews

Top-Rated Window and door contractors in Thornton - Updated Nov 2026

Avatar for Colorado Outdoor Life, LLC
Colorado Outdoor Life, LLC
4.9(
84
)
Window Well Covers - Install or Repair

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"I had the best experience with Rick and his crew. Rick replaced a window well, and caulked 2 other window wells to prevent water from coming in the basement. Awesome job, and done the correct way. Iâ ll highly recommend Rick and his crew anytime. Thanks again Rick"
Window Well Cover - Cherry Hills
Polycarbonate Window Well Cover
Polycarbonate Window Well Cover
Polycarbonate Window Well Cover
After Window Well Maintenance

+17

Response time2 days
Recommended by86%of homeowners
Avatar for One Window At a Time
One Window At a Time
4.9(
102
)
New Windows - 6 +New Windows - 2New Windows - 3-5

Serving Thornton, CO and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: Quality work

"Exemplary service on all levels. From initial contact, which was thorough and informative, impressed with follow up service, plus installation was flawless, Very Impressed with One Window At A Time. I would recommend this company to anyone looking for a reputable window company."
Before and After
Double hang with picture window
3 lite casement
Double hung windows with grids
3 lite slider with grids

+67

Response time1 day
Response rate97%
20 neighbors recently requested a quote
Avatar for On Demand Contracting
On Demand Contracting
4.5(
52
)
Doors - RepairDoors (Exterior) - Install or ReplaceSliding Door or Tracks - Repair+7 more

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Small jobs welcome

Credit card accepted

"RJ did an excellent job adjusting our front entry door and storm door. The house had heaved over the years and the doors were hard to open and close. We thought about getting new doors from a big box, but then we found RJ at On Demand 24/7. Now are old doors work great! Thanks RJ!"
PAINT
TRIM
FLOORING
GETTING DOOR INSTALLED
DOOR INSTALATION

+110

Response time5 hrs
Response rate100%
59 neighbors recently requested a quote
Avatar for In the Grain Houseworks
In the Grain Houseworks
4.9(
94
)
Doors - Repair

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Small jobs welcome

"David did an excellent job installing an interior door for a master bathroom. His craftsmanship and attention to detail was top notch. The finished door, trim, hinges and privacy door knob all perfectly matched our existing interior doors. I enjoyed working with him and would not hesitate to hire him again for future projects."
Response time11 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Cransten Remodeling
Cransten Remodeling
4.7(
350
)
Doors (Exterior) - Install or ReplaceDoors (Exterior) - Install or Replace - For Business

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Warranties offered

"We're very happy with Cransten Service All Start company and especially with Pace Jorgensen who did an outstanding job in replacing our single sidelight front door with mahogany solid wood door with speakeasy window and double sidelights. Pace showed great professionalism, great communication, and very high-quality work. I would strongly recommend Pace and Cransten Services All Stars to anybody. Thank you Pace for all of your hard work that yield an awesome result!"
Garage Cabinet Assembly
Bathroom Shower Tile
Fencing Job
Fencing Job 2
Kitchen Remodel

+12

Response time6 hrs
Response rate98%
175 neighbors recently requested a quote
Avatar for BK Contractors
BK Contractors
4.6(
87
)
New Windows - 6 +New Windows - Multiple

Serving Thornton, CO and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"It went wonderful, BK Contractors were just wonderful to work with, his main crew Paulo, Louis, Vincente, and Leno. They were Professional, easy to talk to, willing to answer any questions I had (I had a lot questions for them), they explained everything I asked and went out of their way to insure that we were satisfied. I was really impressed with their thoughtfulness and the attention they paid to detail. I have never met a contractor like Paulo. His crew would point out things on the house that other contractors have done that were sub par (not to sell more work, for them but so that we were aware. In most the areas they did repairs from the prior contractor's mistakes and did not charge us any extra.) In the end I can say that we are so pleased we have new siding, trim, gutters and decided to trim the house in the front with stacked stone. In short our home is beautiful thanks to Paulo and his crew. The price he charged was more than reasonable and work they did was beyond excellent. We could not be any happier with our home as it looks brand new! We were surprised to pay less than what we thought it going to cost us and the finished project is more beautiful than we could have imagined! We will gladly recommend BK Contractors to all our friends, family and neighbors."
Victor Street Interior/Exterior Home Remodel
Arvada/Garland Street
Golden Siding Replacement and Concrete Patio Pour
Knox Court
Westminster Irving Renovation

+116

Response time2 days
Response rate100%
24 neighbors recently requested a quote
Avatar for Bellwether Homes
Bellwether Homes
4.7(
27
)
New Windows - 6 +New Windows - 3-5New Windows - 3-5 - For Business

Serving Thornton, CO and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"We were very pleased with their work, timing, and quality of workmanship. We have received many positive comments on the appearance of our home. It is a great feeling to look at the home and know it has been sealed well against the weather and elements. We are very glad we chose a long-life product and an experienced team to install it. We would readily recommend Colorado Siding Repair to anyone who wants a quality product installed well at competitives prices, by folks with great integrity."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+95

Response time1 day
Response rate100%
43 neighbors recently requested a quote
...
Showing 1-10 of 1136
Window Door Contractors FAQs, answered by experts

To streamline screen repair in Thornton, start by measuring each window and patio door for accurate sizing, as many homes have non-standard openings. Schedule repairs during milder months to avoid weather delays, and check with your HOA for any specific guidelines. Source screen materials locally, prepare a clean indoor workspace for assembly, and get recommendations from Thornton-based contractors to ensure reliable results.

Helpful?

Completing screen repair in Thornton enhances comfort by improving airflow, reducing indoor allergens, and keeping insects out. Energy-efficient window screens help manage heat during CO’s hot summers and protect furniture from UV rays. Well-fitted patio screens create inviting outdoor spaces, while updated screens boost curb appeal and contribute to a healthier, more enjoyable living environment for families and pets.

Helpful?

In Thornton, homes with stucco or brick exteriors may require specialized mounting hardware for window screens. Multi-story layouts can make upper-level screen repair more challenging, especially for patio screens or large windows. Look for signs like uneven window frames, previous DIY repairs, or water damage around sills—these can indicate the need for custom solutions or professional screen repair services.

Helpful?

For screen repair in Thornton, opt for pet-resistant mesh and reinforced window screens to withstand scratching or pushing from pets. Install window stops or guards on upper floors to prevent falls, and ensure all screens are secured tightly to window or door frames. Consider magnetic patio screens for easy access and automatic closure, and choose wind-resistant materials to handle Thornton’s frequent gusty conditions.

Helpful?

In Thornton, screen repair projects often feature energy-efficient window screens and solar mesh to manage strong sunlight and temperature swings. Homeowners are choosing custom-fit patio screens, pet-resistant mesh, and low-profile frames that blend with modern home designs. Retractable screens are popular for patios and decks, while color-matched frames and security screens are trending in neighborhoods with newer or remodeled homes.

Helpful?

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.