20 Best Window Companies in Timonium, MD (2023 Reviews)

Thinking about replacing your home's windows? We've got you covered in this guide to the top window installation companies.

We analyzed all the top-rated window companies in Timonium and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated September 15, 2023

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

A review of the best window replacement companies in Timonium may not seem like the most captivating article on the EcoWatch site, but trust us, windows impact your life more than you might think. If your windows are outdated or drafty, you could be sending 25-30% of your home's heat or cool air right out of them.

Luckily, helping you save energy with more efficient windows also helps our goals of reducing energy usage for the environment.

We've put together a guide on the top installation companies to help you in your research, so you can not only take advantage of brand new windows, but also save money on your electric bills.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Timonium

The EcoWatch team evaluated dozens of installers across the country to find the top window installation companies for our readers. The companies in this article scored best in our review categories, which include energy-efficient offerings, customer service, local expertise, price, availability and more.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World provides windows expertise in Timonium. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window installation industry for around 27 years. The provider has many positive reviews from customers online.

Window World may be the company for you if you want one that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Window World’s commitment to sustainability can be seen in its energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in Timonium?

Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate information is to ask for a free quote from the company.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been in business since 1995 and currently provides services to nearly every state except Mississippi and West Virginia.

If you’re looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, this may be the right company for you.

Energy Efficiency of Renewal by Andersen Windows

A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019. Not all of Andersen’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Timonium?

Prices are not available on Andersen’s website since the cost of window replacement varies greatly based on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you’d like to know for sure, you can inquire about a quote on the company’s website.

Aeroseal Windows logo
FAST QUOTE
as little as 30 seconds
Best for Businesses

Aeroseal Windows

★★★★★
BBB Rating: A+
Locations: Regional
Founded: 1999
Pros:
  • Pros icon Many years of experience
  • Pros icon Great industry reputation
  • Pros icon Low number of customer complaints
  • Pros icon Manufactures products in-house
  • Pros icon Custom Designs
Cons:
  • Pros icon No lifetime warranty
  • Pros icon Not ideal for residential installations

Aeroseal Windows offers the best window installation for businesses in Timonium. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. This window installation company has been in business since 1999 and currently services 13 states and Washington D.C. Its reputation is backed by all the positive reviews from customers online.

If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, this may be the perfect provider for you.

Energy Efficiency of Aeroseal Windows Windows

The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more. Not all of Aeroseal’s windows are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.

How much does Aeroseal Windows cost in Timonium?

Though pricing is not readily available on Aeroseal’s website, it provides high-quality windows at a competitive price point. Receiving a free quote on its website is the best way to get more accurate information.

Window Nation logo
FAST QUOTE
as little as 30 seconds
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation provides the best residential windows in Timonium. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has been in the window installation industry for around 16 years. The provider has many positive reviews from customers online.

Window Nation may be the company for you if you want one that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

Window Nation’s commitment to sustainability can be seen in its energy-efficient window offerings. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.

How much does Window Nation cost in Timonium?

Window Nation does not outline prices on its website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. The best way to get more accurate information is to ask for a free quote from the company.

We've recommended providers with good reputations, but note that some national companies have independently owned locations in Timonium, so the quality of service may vary depending on your local crew. We have tried to be unbiased and transparent by describing pros and cons for each company reviewed.

More Window Companies in Timonium

Renewal by Andersen of the Capital Region

Jessup, MD
4.4
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Glass Showers
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Commercial Windows

Website: https://www.renewalbyandersen.com/window-company/085-capital-region/about-us
Address: 8265 Patuxent Range Rd, Jessup, MD 20794
Phone: (301) 483-3310

Champion Replacement Windows of Baltimore

Rosedale, MD
3.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Double-Hung

Website: https://www.championwindow.com/Baltimore/
Address: 23 Fontana Ln, Rosedale, MD 21237
Phone: (410) 202-8636

Window World of Harford

Bel Air, MD
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Fast Delivery
  • Service icon Window Replacement
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Residential Windows

Website: https://www.windowworldmaryland.com/
Address: 425 N Main St, Bel Air, MD 21014
Phone: (410) 417-6889

Window Nation

Glen Burnie, MD
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Residential Windows

Website: https://www.windownation.com/baltimore-showroom/
Address: 871 Cromwell Park Dr, Glen Burnie, MD 21061
Phone: (410) 766-8488

Garrety Glass - Betterliving Sunrooms

Cockeysville, MD
4.5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Sliding Glass
  • Service icon Window Repair
  • Service icon Double-Hung
  • Service icon Bay Windows

Website: https://garretyglass.com/
Address: 11309 York Rd, Cockeysville, MD 21030
Phone: (443) 873-0700

C3 American Exteriors

Hunt Valley, MD
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement
  • Service icon Commercial Windows
  • Service icon Aluminum Window Frames
  • Service icon Custom Window Designs
  • Service icon Stained Glass
  • Service icon Fast Delivery
  • Service icon Residential Windows

Website: https://www.c3america.com/
Address: 201 International Cir STE 230, Hunt Valley, MD 21030
Phone: (410) 401-9797

Pella Windows & Doors of Lutherville-Timonium

Timonium, MD
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Sliding Glass
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Double-Hung

Website: http://www.pellabranch.com/baltimore/showrooms/lutherville-timonium/
Address: 2066 York Rd Suite A, Timonium, MD 21093
Phone: (301) 354-3633

Maryland Windows and Doors

Baldwin, MD
4.2
★★★★★
  • Pros icon Timely Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Window Replacement
  • Service icon Window Repair
  • Service icon Energy-Efficient Options
  • Service icon Commercial Windows

Website: http://www.marylandwindowsdoors.com/
Address: 13105 Sanfield Rd, Baldwin, MD 21013
Phone: (410) 593-7332

Verde Group Window Installation

Baltimore, MD
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Aluminum Window Frames
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Energy-Efficient Options
  • Service icon Commercial Windows

Website: https://theverdegrp.com/
Address: 1101 N Gay St, Baltimore, MD 21213
Phone: (410) 705-2117

Obrebski Brothers Windows and Doors

Nottingham, MD
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Energy-Efficient Options

Website: http://obrebskibrothers.com/
Address: 10001 Franklin Square Dr # H, Nottingham, MD 21236
Phone: (410) 497-9267

J Younghans & Sons Window Installation

Baltimore, MD
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Aluminum Window Frames
  • Service icon Stained Glass
  • Service icon Commercial Windows
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Double-Hung

Website: https://younghanshardwoodfloorsbaltimore.com/
Address: 9408 Pinedale Cir, Baltimore, MD 21236
Phone: (410) 541-1836

Peak Custom Remodeling

Baltimore, MD
4.4
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Good Customer Service

Services Offered

  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Full-Service Installations

Website: https://www.peakcustomremodeling.com/
Address: 3106 Lord Baltimore Dr Suite 210, Baltimore, MD 21244
Phone: (410) 862-3972

ACM Window and Door Design

Timonium, MD
4.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Residential Windows

Website: https://www.acmwindowdesign.com/
Address: 10807 Falls Rd, Timonium, MD 21093
Phone: (410) 755-7922

Master Seal

Rosedale, MD
4.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Bay Windows
  • Service icon Sliding Glass
  • Service icon Fast Delivery
  • Service icon Residential Windows

Website: http://mastersealonline.com/
Address: 21 Fontana Ln Suite #104, Rosedale, MD 21237
Phone: (800) 836-6764

Home Services at The Home Depot

Owings Mills, MD
3.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Stained Glass
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Commercial Windows

Website: https://www.homedepot.com/l/Owings-Mills/MD/Owings-Mills/21117/2507/services
Address: 9818 Reisterstown Rd, Owings Mills, MD 21117
Phone: (410) 656-2735

TradeMark Construction & Kitchen and Bath Showroom

Baltimore, MD
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Timely Service

Services Offered

  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Glass Showers
  • Service icon Fast Delivery
  • Service icon Commercial Windows
  • Service icon Residential Windows

Website: https://www.trademarkconstruct.com/
Address: 6806 Eastern Ave, Baltimore, MD 21224
Phone: (410) 633-2308

WeatherMaster Windows

Baltimore, MD
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Commercial Windows
  • Service icon Custom Window Designs

Website: https://www.weathermaster-window.com/
Address: 2115 Eastern Ave, Baltimore, MD 21231
Phone: (410) 675-1601

TiltMaster Windows

Baltimore, MD
3.5
★★★★★
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Repair
  • Service icon Window Replacement
  • Service icon Residential Windows

Website: http://www.tiltmasterwindows.com/
Address: 405 Meadow Rd, Baltimore, MD 21206
Phone: (410) 531-3441

Flores Construction Window Installation

Baltimore, MD
3.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement
  • Service icon Commercial Windows
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Window Repair

Website: https://floresconsinc.com/
Address: 4613 Eastern Ave, Baltimore, MD 21224
Phone: (410) 705-2590

HomeRite Windows and Doors

Baltimore, MD
3.9
★★★★★
  • Pros icon Free assessment

Services Offered

  • Service icon Residential Windows
  • Service icon Bay Windows
  • Service icon Window Replacement
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Energy-Efficient Options
  • Service icon Commercial Windows

Website: http://www.homeritemaryland.com/
Address: 2605 Lord Baltimore Dr F, Baltimore, MD 21244
Phone: (410) 277-3545
Timonium Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Timonium, MD using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in Timonium Saves You Money

Energy-efficient windows can benefit you in more than one way. Here are a few reasons you may want to take the plunge and make the switch:

  • Save on power bills: According to the Department of Energy, heat gained or lost through windows makes up around 25-30% of household energy use. Installing energy-efficient models can help decrease how much energy is used in your home, therefore saving you about 12% more on your bills.
  • Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its value, especially if you have an older home.
  • More efficient energy use in your household: In Timonium where the winters can get very cold, energy-efficient windows lower how much heat is lost through your windows, making it easier to keep your house warm.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.

Estimated Cost of Window Replacement in Timonium

Each window installer offers various services and has varying prices depending on a few factors.

How Much Do New Windows Cost?

Generally, homeowners in Timonium can anticipate that most window installations will cost between $250 and $1,200, with the average cost sitting at around $600. But costs differ remarkably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door installations and replacements, which carry a higher price tag.

With windows, efficiency is the most important factor for most homeowners. High efficiency windows may cost more initially, but by increasing the efficiency of your home — especially during the summer and winter — they can give you many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Timonium homeowners $285+ each year after replacing single-pane windows.

Requesting free quotes from several installers is the best way to figure out which one is right for you.

What Services do Window Installers Offer?

The first question to ask yourself when planning on installing new windows is: Should you get a full-frame installation or a pocket installation?

Full-frame installations are usually recommended when you want to change the style of your windows or your window has a lot of rot or deterioration. With this service, your installers will replace the whole window, including the frame, trim and sill. A pocket installation involves replacing a window within the existing frame, which tends to be less expensive than a full-frame installation.

If you're not sure which window installation service you need, your installer can assist you. Generally, the choice depends on factors such as the age and condition of the home, the type of building material, budget and time restrictions.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Timonium

In our search to make your home improvements easier and more eco-friendly in Timonium, the EcoWatch Reviews team evaluated dozens of companies before deciding on these. We have evaluated the best window installation companies in Timonium primarily based on their energy efficient offerings, as it's the most sustainable option and the best one for homeowners. Energy-efficient windows can reduce your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Because this is a guide for Timonium, we only included companies that serve the city. There are certainly other reputable providers that didn't make the list because they wouldn't be able to serve homeowners in Timonium.

Work Quality

We're willing to bet that you're looking for professionals who do a great job installing windows. We've vetted each installer on this list to ensure its contractors are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed trends in recent online reviews to find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across nearly every category, including quality of parts, quality of installation, cost, warranty, professionalism and more.

Cost

This one is a give-and-take: similar to other services, cheap window installers won't always provide the highest quality service. Still, we want to make sure we're highlighting companies that offer a spectrum of price and financing options so they're accessible to most homeowners.

Warranty

Protecting your investment in new windows is important. For that reason, window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for a while. Window installers that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.

Timonium, MD Window Replacement FAQs

How much does a window install cost?

The average cost to install a single window ranges from $450 to $650. There are a variety of factors that affect the cost, including the materials used in designing the windows, how energy-efficient the windows are, local labor costs, your property's location, the number of windows and styles and sizes of windows.

What type of window is the best for energy efficiency?

Generally, double-pane windows are more efficient than single-pane windows and windows that do not open are more efficient than windows that do. To be sure you'll get the most energy-efficient windows, look for models with the blue Energy Star certification — that means they're certified energy-efficient by the U.S. Department of Energy.

When do I have to use a window installation company?

Unless you have home repair skills and have the tools needed to replace your own windows, we recommend hiring a professional installer. The process of installing windows is quite involved and can take anywhere from four to six hours for one window. Although it's tempting to try to do it yourself to save money, hiring a professional is a faster, more efficient and safer alternative.

When is it time to replace your windows?

Windows typically last about 20 to 30 years, but anytime you see damage on your windows, it's a good idea to have them checked by an expert to see if they need any repairs or replacements.

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