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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon776
    Verified glazing services reviews

Top-Rated Glaziers in Gaithersburg - Updated Nov 2026

Avatar for Unicorp Home Energy Services
Unicorp Home Energy Services
4.9(
630
)
New Windows - 6 +New Windows - 2 - For BusinessNew Windows - 3-5 - For Business+3 more

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"I am very fussy and frequently critical, yet I have only the best things to say about Unicorp window replacement. The owner came to my home - on time - to explain all the options and costs for replacing my windows. It didn't feel like a sales pitch, but more like a discussion of what was best for my home. Unicorp is a local company and makes their own windows, so I knew if there was a problem, there would be someone nearby to call. My windows were installed on time and the crew was very professional. They are very hard workers; they didn't even take a lunch break. I was assured that my new windows would not let the cold air in, as my old windows did. I'll have to wait for winter to test this out, but I have confidence that since these windows were custom-made for me, they fit more tightly. It has been a pleasure to find a local company that has an excellent product, is honest, and reasonably priced."
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+10

Response time1 day
Response rate100%
8 neighbors recently requested a quote
Avatar for Zen Windows of Washington DC
Zen Windows of Washington DC
5.0(
134
)
New Windows - 6 +New Windows - 3-5New Windows - Multiple

Serving Gaithersburg, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1997

Free estimates

Warranties offered

"We replaced a total of 12 windows with Soft-Lite Pro Series Solar Low E-Glass and replaced 2 french doors with Soft-Lite Kingsroyal Series Sliding Doors Solar Low E-Glass. These are upgraded window glass because our two story tall family room has a wall of windows and door that receive sun most of the day. The Solar Low E-Glass has made a huge difference in sun and heat radiation into the room. We no longer have to close the draperies on the hottest summer days. We could not be happier with the entire process of selecting the replacement windows, installation, price and payment terms. Scott Halle is genuinely interested in the best fit for your home. His precision installer, Mark, is easy to work with and have in your home. After installation, we discovered a slightly torqued window pane cross bar in the largest and most difficult window to install. Scott looked at it within a day or two and immediately arranged for the manufacturer to replace the window inset, obviously a warranted item. I would not hesitate to recommend Scott and Zen Windows."
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+27

Response time2 days
18 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for ARHT Home Solutions
ARHT Home Solutions
5.0(
176
)
New Windows - 6 +New Windows - 6+ - For Business

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

We are an exterior remodeling consultant and solutions company with experts of years of on hand experience to guide you through your home remodeling project. \n \nARHT offers a broad array of home improvement services that are customized by your needs and budget including, windows, roofing, siding, trim, gutters, doors, specialty design such as kitchen or bathroom renovations and energy-efficient solutions. \n \nWe are constantly striving to go above and beyond the industry standards and are up to date with the ever-changing industry technological advances. ARHT Home Solutions has certifications through many building product manufacturers and is an accredited business through the BBB and NRCA. \n \nArht home solutions is becoming one of the fastest growing companies in the region. \n \nFor our customer's convenience, we accept all major credit cards and offer numerous financing options for qualified buyers. \n \nGive us a call today to request your free estimate!

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+72

91 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Clifton Contracting
Clifton Contracting
4.8(
42
)
Egress Window - Install

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Clifton Contracting made the whole process so easy from planning to completion. We are thrilled with the window and the complete change in our basement. We chose a larger Anderson window and an upgraded Rockwell window well. No other estimates could match them."
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for A.R. Glass Repairs
A.R. Glass Repairs
5.0(
23
)
Stained or Specialty Glass - Install or ReplaceStained or Specialty Glass - RepairWindow Glass - Install or Replace+1 more

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"A. R. Glass did a fantastic job. Instead of having to replace my windows, they were able to come in and replace the glass for considerable savings. I would definitely have them come again. In fact, I had them come for a second job already."
Response time1 day
Response rate100%
Recommended by81%of homeowners
Avatar for Presidential Exteriors LLC
Presidential Exteriors LLC
4.7(
180
)
New Windows - 6 +New Windows - 3-5New Window - Single+9 more

Serving Gaithersburg, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Warranties offered

"Presidential Exteriors is a well-managed company. We had twenty-five, very large, windows, two large sliding glass doors and the front door replaced. Everyone, starting with the young man who approached us to talk about the company, the salespeople and the team doing the work was professional, polite, honest, pleasant and super careful. The windows, sliding glass doors and the front door look amazing. Our house is fifty-two-years old and badly needed to be "refreshed". The quality of their products is excellent. While the work was being done, several people from the company came by to check on the progress. After the job was completed, we met with Ben who came by to do a final inspection and answer any questions or concerns we may have. The crew cleaned up and vacuumed before they left. We will use Presidential Exteriors again to replace another door."
Newly installed roof
Windows & Garage Door Replacement
Finished product with brand new siding.
Newly installed roof
Windows & Garage Door Replacement

+44

Response time1 day
Response rate100%
35 neighbors recently requested a quote
Avatar for Whiting Window Siding and Roofing
Whiting Window Siding and Roofing
4.4(
1,116
)
New Windows - 6 +

Serving Gaithersburg, MD and surrounding areas

Approved (Corporate)

In business since 1976

Free estimates

Warranties offered

"Everything went great. They came out a measured my windows. About 3 weeks later, I had 5 custom windows installed. The installers were on time, very neat and look like they did a good job installing the windows. Around the outside, the windows were capped and afterwards they showed me how to open and clean them. I will be calling them up once I save up for my other windows."
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1 neighbors recently requested a quote
Recommended by92%of homeowners
Exterior Medics
4.6(
518
)
New Windows - 6 +

Serving Gaithersburg, MD and surrounding areas

Approved (Corporate)

In business since 2008

Free estimates

Credit card accepted

Exterior Medics is a premier home remodeling company, specializing in exterior replacement and repairs for both commercial and residential properties. When it comes to service and execution, we are unmatched. We've earned the Angie's List Super Service Award for 8 consecutive years, and are among just 2% of contractors nationwide to earn the GAF Master Elite status. Our team handles every project with utmost care and a laser-focused attention to detail. We consider every home we touch to be a reflection of our high standards, and treat every homeowner like a beloved member of our own family. Bonded and well insured. Licensed in DC, Maryland and Virginia.

28 neighbors recently requested a quote
Recommended by90%of homeowners
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Glaziers FAQs, answered by experts

Yes, selecting double glazing or low-E coatings to reduce energy costs.

DIY is possible for small mirrors. Professional installation ensures secure mounting for large or heavy mirrors.

Clean regularly with glass cleaner and a soft cloth. Avoid abrasive materials to prevent scratches.

Hard water stains are caused by hard water. Hard water contains a lot of minerals, like calcium and magnesium. When water on your glass surfaces dries out, the minerals stay behind and stick to the glass. This results in a residue that looks like white cloudy or streaky spots. Call a pro to install a water softener to banish hard water problems.

There are a few reasons your mirrors might have smears on them after cleaning, but the two most likely are remaining cleaning product and minerals from hard water. If you used a commercial glass cleaner, consider spraying down the mirror with a 1-to-1 ratio of white vinegar and water after cleaning and then wiping it dry with a cotton cloth. If you suspect hard water is the issue, use a cotton ball soaked in rubbing alcohol to spot-clean the streaks, and then let the mirror air-dry.

The Gaithersburg, MD homeowners’ guide to glazing services

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