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New window replacement installed in a home

Best Window Replacement Companies in Missoula, MT

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Written By Max Peterson|Last Updated: April 18, 2024

You might be installing new windows to improve your home's design, boost your energy efficiency, or protect your home from the rain and gusty winds. A qualified window replacement company can help you get the most value from your new windows, so you can prolong their lifespan.

Top Pick
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Most Customizable
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience
Best Window Selection
  • Free Quotes
  • 2022 J.D. Power award winner
  • Materials sourced within the U.S.

Top 9 Missoula Window Installation Companies

By working with one of these esteemed companies for window replacement in Missoula, you'll get the benefits of new windows in no time.

The This Old House Reviews Team evaluated scores of window replacement companies in and around Missoula. We took into account the following factors to identify the best window replacement companies:

  • Services and warranties
  • Professional experience and licensure
  • Customer reviews and recommendations
  • Product quality
  • Energy-efficiency guarantees
Your Home Improvement Company - Windows & Bath Logo

Your Home Improvement Company - Windows & Bath

Based on 90 customer reviews.

Services Offered

Glass ShowersDouble-HungVinyl FramesEnergy-Efficient OptionsBay WindowsGlass DoorsWindow Replacement/installation


  • Free assessment
  • Educational website
  • Price transparency
2901 Brooks St Suite J3a, Missoula, MT 406-206-8049 yourhomeimprovementco.com
Glass Doctor of Missoula Logo

Glass Doctor of Missoula

Based on 135 customer reviews.

Services Offered

Custom GlassGlass RepairWindow RepairGlass ShowersEnergy-Efficient OptionsWindow Replacement/installationMirrors


  • Price transparency
  • Good customer service
  • Educational website
1015 Waverly St, Missoula, MT 406-549-9091 glassdoctor.com
Montana Glass Logo

Montana Glass

Based on 50 customer reviews.

Services Offered

Energy-Efficient OptionsWindow Replacement/installationSkylightsWindow Repair


  • Price transparency
  • Educational website
  • Free assessment
550 Hawthorne St, Missoula, MT 406-728-3180 montanaglass.biz
Integrity Window & Door Logo

Integrity Window & Door

Based on 40 customer reviews.

Services Offered

Glass DoorsWindow Replacement/installation


  • Price transparency
  • Free assessment
  • Good customer service
2311 S 3rd St W, Missoula, MT 406-541-0899 missoulawindows.com
Missoula Glass Logo

Missoula Glass

Based on 22 customer reviews.

Services Offered

Glass ShowersSkylightsWindow Replacement/installationMirrorsCustom Window Designs


  • Price transparency
  • Free assessment
  • Good customer service
5656 W Harrier, Missoula, MT 406-926-1818 missoulaglass.com
Garden City Paint & Glass Logo

Garden City Paint & Glass

Based on 27 customer reviews.

Services Offered

MirrorsGlass ShowersWindow Replacement/installation


  • Educational website
3217 Brooks St, Missoula, MT 406-549-0608 gardencitypaintandglass.com
Shaded Window Coverings Logo

Shaded Window Coverings

Based on 39 customer reviews.

Services Offered

Window Replacement/installationCustom Window Designs


  • Educational website
  • Free assessment
  • Good customer service
4461 Ludwig Ln, Stevensville, MT 406-361-7420 shadedwc.com
Valley Glass Logo

Valley Glass

Based on 25 customer reviews.

Services Offered

Energy-Efficient OptionsVinyl FramesGlass ShowersMirrorsSkylightsTempered GlassGlass DoorsMetal FramesWindow Replacement/installation


  • Price transparency
  • Good customer service
109 Ridgewater Dr, Polson, MT 406-883-5055 valleyglassmt.com
New window replacement installed in a home

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Facts about Missoula
Annual Energy Efficient Windows Savings:$433
Average Max Temp:50°F
Average Min Temp:34°F
Average Daily Sunlight:53%
Average Annual Snowfall:47.0"
Average Monthly Precipitation:2.49"

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

How To Choose a Window Company in Missoula

Each window installer has different offerings and approaches. To ease the company search, keep these factors in mind:

Window Cost by Type

When you're shopping for new windows, it's crucial to remember that there's more to cost than just purchase price. You want a high-quality and durable window. Choosing cheap windows could actually raise your overall cost, due to their shorter lifespan and more intensive maintenance needs. The age of your home, together with the styles, sizes, and materials of windows you opt for, can impact pricing. Simple double-hung windows deliver great value with their straightforward style and simple mechanisms, while new skylights cost more to prepare for and install. It's advisable to speak with a reliable window installer to figure out your ideal options.

To help you form a rough estimate, this table shows the typical cost of the most common residential window types.

Window TypesAverage Cost
Glass Block$41-$529

Window Material Cost

Materials also help determine a window's cost. You might choose a material based on your energy efficiency goals, your desired look, and the local climate. For example, windows made of wood can give your home an organic design without breaking the bank, but you'll have to invest more toward maintenance. Aluminum and composite windows cost more up-front, but they're incredibly durable against the elements, so you'll spend far less on maintenance.

Window TypesAverage Cost

Other Window Replacement Costs

Your total cost for window replacement will also include applicable warranty fees, permit-related costs (if required), and labor. Be sure to discuss each of these aspects with an estimator before committing to a window company.

Experience and Training

Select a company that focuses on window replacement and installation, and look for this information on its website:

  • The number of years it's been in business
  • Photo galleries of completed projects
  • Official non-government credentials attesting to its workmanship
The more experience a company has, the better its service and workmanship.

Licensing and Credentials

Montana requires window professionals to enroll in the Construction Contractor Registration Program instead of getting licensure. The law applies to any business that adds to or removes from real property, be it a home or a business. Since there's no licensing exam involved, we advise you to explore private certifications from each company you're considering.

Types of Windows Offered

There are many replacement window types you can choose from, and it's vital to find a company that is experienced with the ones you want. Browse a company's website and reviews for any of these types:

Finally, pay close attention to the framing materials that a window company uses. Each window frame material has a different energy efficiency level, price point and life span. A company will usually specify whether the windows they set up use metal, vinyl, composite, wood, or fiberglass.

Customer Feedback

Reading other customers' stories is an excellent way to screen window companies in your area. Trustworthy sources for customer reviews include Google, Yelp, and Trustpilot Speak with people you know who have used a company you're interested in, and ask a representative for a copy of its reference list.

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Frequently Asked Questions About Window Replacement in Missoula

How could new windows help my energy efficiency?

In Missoula specifically, most homeowners using efficient windows reduce their carbon emissions by 320 pounds annually. This means they save $430 on their annual electricity costs.

The U.S. Department of Energy states that 25%–30% of a home's heating and cooling capacity is used to compensate for heat gain and heat loss through windows. By upgrading to new, more efficient windows, you can boost your home's energy efficiency and minimize your electricity bills.

Do I need a building permit to replace my home's windows?

Whether you need a building permit to replace your windows varies on your local building codes and regulations. Some towns require permits for window replacement projects, especially those involving structural changes or alterations to the window openings. We recommend you check with your local building department or contact a professional before beginning any window replacement work.

My window screen tore. How should I fix it?

Most broken screens are very simple to fix. For small tears, some window service providers might give you a repair kit that use strong adhesive patches. If your installer doesn't include a kit, you can buy one for about $5–$10 at a home improvement store.

You might need to get a new screen for large tears or those along the edges of the window. A window installer you trust can get the job done at a reasonable cost.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology


Energy Star