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*The Angi rating for Window Service companies in Frederick, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.
*The HomeAdvisor rating for Window Service companies in Frederick, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.
Last update on January 14, 2026
Find Window pros in Frederick

Zen Windows of Washington DC
Zen Windows of Washington DC
At Zen Windows, we think that finding replacement windows, sliding doors and entry doors for your home should be a simple, pleasant experience. Our team works closely with you via e-mail and phone to help shape the improvements you envision without ever having a salesperson visit your home. We offer award-winning, energy-efficient windows and doors, and provide a lifetime transferable product and installation warranty. Zen Windows sets our clients at ease with our No Down Payment Policy. You won't pay a penny until the job is completed. Simple, easy, stress-free...the way it should be.
"Our builder grade 1990s wood windows, door, transom and site-lite windows had all suffered from age and neglected painting. They were all long overdue for replacement and then we discovered Zen Windows of Washington, DC. They are consummate professionals. Their high quality, energy efficient products backed by a transferable lifetime warranty, strong technical knowledge, excellent value (price/quality relationship), pressure free consultative sales approach, and absolutely incredible install team left us 100% satisfied from beginning to end. The leader of the install team promised us that they would do the install as if it was his own home and actually did! I am very detail oriented and given the complexity of the job, their work was truly unbelievable. It’s perfect! Don’t waste your time with Andersen, Pella, Thompson Creek or others. Look no further than Zen Windows of Washington DC and work together with them to find the best solution for you. You will be very happy you did."
Devon S on June 2025
At Zen Windows, we think that finding replacement windows, sliding doors and entry doors for your home should be a simple, pleasant experience. Our team works closely with you via e-mail and phone to help shape the improvements you envision without ever having a salesperson visit your home. We offer award-winning, energy-efficient windows and doors, and provide a lifetime transferable product and installation warranty. Zen Windows sets our clients at ease with our No Down Payment Policy. You won't pay a penny until the job is completed. Simple, easy, stress-free...the way it should be.
"Our builder grade 1990s wood windows, door, transom and site-lite windows had all suffered from age and neglected painting. They were all long overdue for replacement and then we discovered Zen Windows of Washington, DC. They are consummate professionals. Their high quality, energy efficient products backed by a transferable lifetime warranty, strong technical knowledge, excellent value (price/quality relationship), pressure free consultative sales approach, and absolutely incredible install team left us 100% satisfied from beginning to end. The leader of the install team promised us that they would do the install as if it was his own home and actually did! I am very detail oriented and given the complexity of the job, their work was truly unbelievable. It’s perfect! Don’t waste your time with Andersen, Pella, Thompson Creek or others. Look no further than Zen Windows of Washington DC and work together with them to find the best solution for you. You will be very happy you did."
Devon S on June 2025

Unicorp Home Energy Services
Unicorp Home Energy Services
Since 1987 UNICORP Home Energy Services has made window, siding and roofing projects a worry free experience for over 23,000 homeowners in MD, VA and Washington D.C. We are proud of our flawless record with the Better Business Bureau because customer satisfaction is our number one priority. Our past partnerships with Price Club (Costco) and more recently Pepco Energy Services are a clear indication that we understand the importance of providing substantial savings and value on all our energy saving products. ---- At UNICORP we don't believe in hard-sell tactics, and never make cold calls that interrupt you at meal time. We understand the importance of making the right decision without headache or high pressure. That's why more customers refer us to their friends and family than any other window and siding company. Not surprising when dealing with professionals that care about their customers and love what they do. ---- We thank you for visiting our profile and look forward to improving the quality, enjoyment and energy efficiency of your home. ---- Additional phone - (703) 462-6100. Additional fax - (877) 867-3726. Award winning. Additional DBA - Vinyl Technologies Energy Service. Additional contact name- Brian Weil. Additional email - [email protected].
"We just had Unicorp install new windows throughout our entire house. The window quality is excellent and the installation went very well. We were replacing 55 years old windows - and were very happy with the entire process, from selection, exterior color choices, and finally installation."
sheila t on May 2025
Since 1987 UNICORP Home Energy Services has made window, siding and roofing projects a worry free experience for over 23,000 homeowners in MD, VA and Washington D.C. We are proud of our flawless record with the Better Business Bureau because customer satisfaction is our number one priority. Our past partnerships with Price Club (Costco) and more recently Pepco Energy Services are a clear indication that we understand the importance of providing substantial savings and value on all our energy saving products. ---- At UNICORP we don't believe in hard-sell tactics, and never make cold calls that interrupt you at meal time. We understand the importance of making the right decision without headache or high pressure. That's why more customers refer us to their friends and family than any other window and siding company. Not surprising when dealing with professionals that care about their customers and love what they do. ---- We thank you for visiting our profile and look forward to improving the quality, enjoyment and energy efficiency of your home. ---- Additional phone - (703) 462-6100. Additional fax - (877) 867-3726. Award winning. Additional DBA - Vinyl Technologies Energy Service. Additional contact name- Brian Weil. Additional email - [email protected].
"We just had Unicorp install new windows throughout our entire house. The window quality is excellent and the installation went very well. We were replacing 55 years old windows - and were very happy with the entire process, from selection, exterior color choices, and finally installation."
sheila t on May 2025

Basement Gurus, LLC
Basement Gurus, LLC
Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!
"Josh, the representative from Basement Gurus was outstanding! We had experienced a water issue in our finished basement. Josh thoroughly examined the interior and exterior of the home and determined that the leak might be plumbing related. Josh could have very easily exploited our ignorance and suggested a solution purely beneficial to his company that may not have addressed the underlying cause of the problem. Instead, he demonstrated his integrity by realistically assessing the situation even if it would jeopardize the sale. This is commendable particularly in this era where cutthroat business practices are commonplace. I highly recommend Basement Gurus. They are fortunate to have an employee like Josh who exhibits concern for the customer at such a high level. "
Don I on January 2026
Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!
"Josh, the representative from Basement Gurus was outstanding! We had experienced a water issue in our finished basement. Josh thoroughly examined the interior and exterior of the home and determined that the leak might be plumbing related. Josh could have very easily exploited our ignorance and suggested a solution purely beneficial to his company that may not have addressed the underlying cause of the problem. Instead, he demonstrated his integrity by realistically assessing the situation even if it would jeopardize the sale. This is commendable particularly in this era where cutthroat business practices are commonplace. I highly recommend Basement Gurus. They are fortunate to have an employee like Josh who exhibits concern for the customer at such a high level. "
Don I on January 2026

Presidential Exteriors LLC
Presidential Exteriors LLC
Licensed in MD, DC and VA, Presidential Exteriors is your one stop solution for any exterior remodeling needs. Our award winning products and experienced installers will ensure that your home is a Presidential Home. We look forward to showing you how our customer centric approach and commitment to communication guarantees satisfaction the first time, every time.
"Presidential Exteriors takes their lifetime warranties very seriously. Every time I've had an issue since they redid my roof, I've contacted them, and they've fixed the problem without charging. I appreciate them a lot. Good job, James, Hicks, and Glu!"
Russell W on September 2025
Licensed in MD, DC and VA, Presidential Exteriors is your one stop solution for any exterior remodeling needs. Our award winning products and experienced installers will ensure that your home is a Presidential Home. We look forward to showing you how our customer centric approach and commitment to communication guarantees satisfaction the first time, every time.
"Presidential Exteriors takes their lifetime warranties very seriously. Every time I've had an issue since they redid my roof, I've contacted them, and they've fixed the problem without charging. I appreciate them a lot. Good job, James, Hicks, and Glu!"
Russell W on September 2025

FOX CREEK BUILDERS LLC
FOX CREEK BUILDERS LLC
Thank you for your interest in Fox Creek Builders, LLC. We specialize in all types of insulated vinyl and cement siding systems, wood and vinyl energy star thermal windows, and architectural and traditional roof shingles. By using only premium materials, most of our work carries a lifetime warranty. We now install Environmental Stoneworks cultured cut stone products. We have a wide variety of shapes colors and sizes from Natural Fieldstone to Quarry and Ledgestone. Whether you need insulated windows and siding before the cold weather sets in or a new roof before the next rainy season, call Fox Creek Builders, LLC. Our design team will provide you with a detailed analysis of your project with all product options and a firm cost estimate. We do this in a relaxed and professional manner with respect for your limited time. Our factory-trained installers will guarantee the best possible installation and maximize all manufacturers’ warranties.
"I cannot say enough good things about FCB. Max bends over backwards to make sure the customer is completely satisfied. I’ve never had a more responsive and conscientious contractor. We had FCB replace all of our windows in 2022. We were so impressed by the quality work and price that we called them again to replace our storm door, front door, sidelights and shutters. Great experience. Highly recommend! "
cary H on December 2025
Thank you for your interest in Fox Creek Builders, LLC. We specialize in all types of insulated vinyl and cement siding systems, wood and vinyl energy star thermal windows, and architectural and traditional roof shingles. By using only premium materials, most of our work carries a lifetime warranty. We now install Environmental Stoneworks cultured cut stone products. We have a wide variety of shapes colors and sizes from Natural Fieldstone to Quarry and Ledgestone. Whether you need insulated windows and siding before the cold weather sets in or a new roof before the next rainy season, call Fox Creek Builders, LLC. Our design team will provide you with a detailed analysis of your project with all product options and a firm cost estimate. We do this in a relaxed and professional manner with respect for your limited time. Our factory-trained installers will guarantee the best possible installation and maximize all manufacturers’ warranties.
"I cannot say enough good things about FCB. Max bends over backwards to make sure the customer is completely satisfied. I’ve never had a more responsive and conscientious contractor. We had FCB replace all of our windows in 2022. We were so impressed by the quality work and price that we called them again to replace our storm door, front door, sidelights and shutters. Great experience. Highly recommend! "
cary H on December 2025

Clifton Contracting
Clifton Contracting
Locally owned and operated. We are here to turn your project idea into reality. Additional phone number - (703) 830-6103.
"Kenny and team were amazing to work with - professional, polite, honest, and finished the project ahead of schedule and at a very fair price. We had two old single pane windows replaced in our basement (which may have been 50+ years old), and a new window well installed. The work was very well done. I have since recommended Clifton to multiple friends and other contractors. Five stars."
Alex W on September 2025
Locally owned and operated. We are here to turn your project idea into reality. Additional phone number - (703) 830-6103.
"Kenny and team were amazing to work with - professional, polite, honest, and finished the project ahead of schedule and at a very fair price. We had two old single pane windows replaced in our basement (which may have been 50+ years old), and a new window well installed. The work was very well done. I have since recommended Clifton to multiple friends and other contractors. Five stars."
Alex W on September 2025

A.R. Glass Repairs
A.R. Glass Repairs
You will find we work hard to provide all our customers with excellent service at competitive prices. When you need a professional window or door repair solution, trust the team at A.R. GLASS REPAIRS We Offer: *Free estimates to residents and businesses in the Washington DC. area. *Same Day Service *Emergency Glass replacement *Glass repair/replacement *Glass decor *Window repair- window balances, springs, locks and more *Screen repair/replacement Call now at 202-735-4104 for all your glass needs
"The project went perfect! They were responsive and helpful providing guidance through the process."
Kevin B on June 2025
You will find we work hard to provide all our customers with excellent service at competitive prices. When you need a professional window or door repair solution, trust the team at A.R. GLASS REPAIRS We Offer: *Free estimates to residents and businesses in the Washington DC. area. *Same Day Service *Emergency Glass replacement *Glass repair/replacement *Glass decor *Window repair- window balances, springs, locks and more *Screen repair/replacement Call now at 202-735-4104 for all your glass needs
"The project went perfect! They were responsive and helpful providing guidance through the process."
Kevin B on June 2025

JW Home Improvement
JW Home Improvement
JWHI provides world-class customer service with consistent and superior workmanship. We strive to be the trusted market leader in the home improvement industry. Proudly, we are Super Service Award Winner for over a decade, and we plan to keep that streak going! Contact us today to discuss your next handyman or remodeling project. Our mission is to provide you with a happy home improvement experience!
"I just warn other people about their scam like business tactic. They added up overhead charge (8% of labor cost) and whatever material they used to finish the job. So an upfront estimate they give you is only labor cost. Be careful before you hire."
kyong P on December 2025
JWHI provides world-class customer service with consistent and superior workmanship. We strive to be the trusted market leader in the home improvement industry. Proudly, we are Super Service Award Winner for over a decade, and we plan to keep that streak going! Contact us today to discuss your next handyman or remodeling project. Our mission is to provide you with a happy home improvement experience!
"I just warn other people about their scam like business tactic. They added up overhead charge (8% of labor cost) and whatever material they used to finish the job. So an upfront estimate they give you is only labor cost. Be careful before you hire."
kyong P on December 2025
Seneca Creek Home Improvement, LLC
Seneca Creek Home Improvement, LLC
Seneca Creek Home Improvement specializes in Windows, Siding, Roofing and Doors. With over 15 years of experience providing quality products and service, we guarantee 100% Customer satisfaction!
"Over the past decade, Seneca Creek Home Improvement has replaced my roof, all windows, wrapped all original wood with aluminum; recent gutter project is just the latest work Jeff and his teams have done for us. The work is excellent, and has stood the test of time. Furthermore, Jeff Leach (the owner) absolutely stands behind his work 100%. Over the years there have been a few minor issues which he had his team fix without any issues or questions. You may find cheaper contractors (although Jeff is highly competitive) but if you want reliability and peace of mind, go with Jeff and his team. --Andy (Germantown, MD)"
Andrew J on June 2025
Seneca Creek Home Improvement specializes in Windows, Siding, Roofing and Doors. With over 15 years of experience providing quality products and service, we guarantee 100% Customer satisfaction!
"Over the past decade, Seneca Creek Home Improvement has replaced my roof, all windows, wrapped all original wood with aluminum; recent gutter project is just the latest work Jeff and his teams have done for us. The work is excellent, and has stood the test of time. Furthermore, Jeff Leach (the owner) absolutely stands behind his work 100%. Over the years there have been a few minor issues which he had his team fix without any issues or questions. You may find cheaper contractors (although Jeff is highly competitive) but if you want reliability and peace of mind, go with Jeff and his team. --Andy (Germantown, MD)"
Andrew J on June 2025

Paramount Builders Inc
Paramount Builders Inc
Paramount Builders takes pride in being your local home improvement contractor. Since 1991, we have served our local community by providing the very best products, warranties, installation techniques, service, and most importantly; your experience from start to finish. Our exclusive product lines give us the benefit of being able to extend our top-of-the-line products to you, our neighbors, with certainty and affordability. We hand-picked our exclusive products with you, your family, and your home's aesthetic and longevity in mind. All of our products were created to keep your home energy efficient and protected in every way. Our commitment to excellence does not waiver. We understand what it means to own a home, and we understand as professionals what you and your home deserve. We live each day by our mission statement; "Improving the Community, One Home at a Time," and thank you for continuing to trust us!
"Unprofessional visit. Showed up unannounced and we only knew they were there because one person stood 10 feet from our porch staring at us in through our living room window. My wife spent 10 minutes talking to them, they stated they had no business cards, they only had an appointment card but didn't present it. Honestly when you show up at someone's house you need some sort of identifier if your walking door to door in casual clothes. After the uncomfortable dead stare through the windows my wife and i have decided to post a No Solicitors sign. They didn't take no for an answer at first, pushing with more questions to circumvent the no she gave, as well as interrupted our dinner, as they showed up right at 6pm."
Robert H on May 2023
Paramount Builders takes pride in being your local home improvement contractor. Since 1991, we have served our local community by providing the very best products, warranties, installation techniques, service, and most importantly; your experience from start to finish. Our exclusive product lines give us the benefit of being able to extend our top-of-the-line products to you, our neighbors, with certainty and affordability. We hand-picked our exclusive products with you, your family, and your home's aesthetic and longevity in mind. All of our products were created to keep your home energy efficient and protected in every way. Our commitment to excellence does not waiver. We understand what it means to own a home, and we understand as professionals what you and your home deserve. We live each day by our mission statement; "Improving the Community, One Home at a Time," and thank you for continuing to trust us!
"Unprofessional visit. Showed up unannounced and we only knew they were there because one person stood 10 feet from our porch staring at us in through our living room window. My wife spent 10 minutes talking to them, they stated they had no business cards, they only had an appointment card but didn't present it. Honestly when you show up at someone's house you need some sort of identifier if your walking door to door in casual clothes. After the uncomfortable dead stare through the windows my wife and i have decided to post a No Solicitors sign. They didn't take no for an answer at first, pushing with more questions to circumvent the no she gave, as well as interrupted our dinner, as they showed up right at 6pm."
Robert H on May 2023
The Frederick, MD homeowners’ guide to window services
From average costs to expert advice, get all the answers you need to get your job done.

From a small window over the kitchen sink to a grand living room window, picture windows add light and great views. Learn how much picture windows cost.

Single, double, or cottage-style, the cost of casement windows is worth it for their versatility alone. Let's look at casement window costs plus installation.

Is it time to upgrade your home’s windows? Learn more about window replacement costs, considering various window sizes, styles, and energy efficiency.

What is window flashing, and why is it likely the culprit for your leaky glass? Learn more about this often-overlooked window installation step.

Deciding how to frame your view is important. Learn about how replacement vs new construction windows compare so you can choose the right fit for your home.

Use our window installation checklist to ensure your home is ready before contractors arrive—and to make sure the windows are installed correctly and affordably.
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- 🌱 "Mow a small front yard"
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