4.5 
686 Stay away!!!! This contractor came in to replace our balcony's membrane and window frames because there was leaking into the apartment below. They have been out three times since they initially finished the work because more water keeps leaking into the ceiling below and still haven't fixed...
I visited the Pella store in downtown Bethesda to install three wood inside fiberglass outside windows in my 1898 row house in DC. I purchased what Pella calls the very top of the line windows. The only reason why I went with Pella was because they stained the wood side of the windows;...
My experience with Del-Ray Glass was positive from the beginning. They followed through on their promises to send a quote within 2 days after giving a free estimate on the glass-repair, they showed up early to the appointment to fix the window, and they worked hard until the job was done (and...
Richard Grunes came out, made measurements. He came back with only 3 pieces of glass. They did not have the walls, or base, or complete shower. Previously, home depot told me all of the pieces would cost less than $400--$400 for the entire shower, 3 glass panels, walls and base. Grunes was...
The process of replacing your windows can be a nightmare or a dream. With Window Universe it was a dream. Everything went far smoother than I expected. The salesman was not at all pushy - in fact my time with him was informative and pleasant. In addition, the company did everything he...
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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
We are a family owned and operated company since 1986. .We are a client based company,hassle free no sales pressure or gimmicks with our presentations.we offer one of the best warranties in the market .We have our own crews to guarantee great installations every time.We offer premier energy efficient vinyl windows and vinyl siding.
"Responsive, responsible and did all that was promised. Promply corrected small mistake."
Judith R on June 2025
We are a family owned and operated company since 1986. .We are a client based company,hassle free no sales pressure or gimmicks with our presentations.we offer one of the best warranties in the market .We have our own crews to guarantee great installations every time.We offer premier energy efficient vinyl windows and vinyl siding.
"Responsive, responsible and did all that was promised. Promply corrected small mistake."
Judith R on June 2025
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
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!
"Awesome Amazing job"
Karen H on May 2025
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!
"Awesome Amazing job"
Karen H on May 2025
Exquisite Roofing and Exteriors LLC is a family owned and operated business that's fully committed to serving the residential roofing, windows, and other interior/exterior home improvement needs of our clients. We pride ourselves on quality and professionalism. In addition to residential and commercial roofing services, we also specialize in providing a broad range of services including window replacements, storm damage repair, metal roofing, custom deck design, replacement of doors, gutter replacement services, and more! We are CertainTeed preferred contractors and GAF certified! We are fully licensed and certified to operate with your insurance! and Yes we do provide FREE No-Obligation Estimates! ALL ESTIMATES ARE GOOD FOR 90 days Give us a call, message, or email! [email protected] Office manager phone: (443)734-7152 We also have the app so message us too if that is more convenient for you!
"No show for an in-person estimate after I spoke with someone on the phone."
Peter R on June 2024
Exquisite Roofing and Exteriors LLC is a family owned and operated business that's fully committed to serving the residential roofing, windows, and other interior/exterior home improvement needs of our clients. We pride ourselves on quality and professionalism. In addition to residential and commercial roofing services, we also specialize in providing a broad range of services including window replacements, storm damage repair, metal roofing, custom deck design, replacement of doors, gutter replacement services, and more! We are CertainTeed preferred contractors and GAF certified! We are fully licensed and certified to operate with your insurance! and Yes we do provide FREE No-Obligation Estimates! ALL ESTIMATES ARE GOOD FOR 90 days Give us a call, message, or email! [email protected] Office manager phone: (443)734-7152 We also have the app so message us too if that is more convenient for you!
"No show for an in-person estimate after I spoke with someone on the phone."
Peter R on June 2024
At The Home Doctor, we go beyond exterior improvements – we protect the health of your home. As a locally owned and operated business, our mission is simple: to provide you, our valued homeowner, with superior products and personalized service. Big Savings: Limited Time Only – 50% OFF Installation TERMS AND CONDITIONS: Offer valid on complete replacement projects of 10+ windows, entire roofs, or all sides of siding. Gutter, door, and attic insulation projects qualify with a minimum job cost of $7,500. Discount applies to 50% off installation costs only, which typically account for 20-30% of the total job cost, resulting in a 10-15% overall project discount. Valid for new contracts only, cannot be combined with other offers. Valid on initial visit only, and has no cash value. Residential projects only; exclusions apply. Deferred payments only valid with this promotion. The Home Doctor reserves the right to modify or cancel this promotion at any time.
"We were looking to increase our attic insulation and met The Home Doctor Company at the Capital Remodel and Garden Show in February 2025 as well as some other companies. We consulted with several companies and decided to go with The Hone Doctor for our attic insulation. The company rep, Chris Lear, was very good explaining what they would do and why our attic needed R-38 insulation. I knew we needed more but did not realize our attic was only R-13. I have worked with numerous contractors before on projects and felt this was a really good company plus they have great reviews. The installation of the attic insulation went very well. They do install siding as well but decided to put this project off for now. Would highly recommend this company."
Beverly B on March 2025
At The Home Doctor, we go beyond exterior improvements – we protect the health of your home. As a locally owned and operated business, our mission is simple: to provide you, our valued homeowner, with superior products and personalized service. Big Savings: Limited Time Only – 50% OFF Installation TERMS AND CONDITIONS: Offer valid on complete replacement projects of 10+ windows, entire roofs, or all sides of siding. Gutter, door, and attic insulation projects qualify with a minimum job cost of $7,500. Discount applies to 50% off installation costs only, which typically account for 20-30% of the total job cost, resulting in a 10-15% overall project discount. Valid for new contracts only, cannot be combined with other offers. Valid on initial visit only, and has no cash value. Residential projects only; exclusions apply. Deferred payments only valid with this promotion. The Home Doctor reserves the right to modify or cancel this promotion at any time.
"We were looking to increase our attic insulation and met The Home Doctor Company at the Capital Remodel and Garden Show in February 2025 as well as some other companies. We consulted with several companies and decided to go with The Hone Doctor for our attic insulation. The company rep, Chris Lear, was very good explaining what they would do and why our attic needed R-38 insulation. I knew we needed more but did not realize our attic was only R-13. I have worked with numerous contractors before on projects and felt this was a really good company plus they have great reviews. The installation of the attic insulation went very well. They do install siding as well but decided to put this project off for now. Would highly recommend this company."
Beverly B on March 2025
Start with skylights! At VELUX, our mission is clear: we're dedicated to transforming your space with natural light and fresh air with skylights. Whether you're looking to replace old skylights or install brand-new ones, we will guide you every step of the way. Why Choose VELUX? =================== When it comes to skylights and roof windows, VELUX is the global leader. Here's why you should trust us to transform your home: 1. Innovation and Quality: VELUX skylights are renowned for their innovation and unmatched quality. They're designed to let in abundant natural light while keeping your space leak-free and energy-efficient. 2. Huge Product Selection: You’ll have access to a wide range of skylight options, from fixed to vented skylights. And we are here to help tailor the selection to suit your specific needs and style preferences. 3. Expertise: We take pride in what we do at VELUX, and our team is highly trained to guide you through the entire process. From selecting the perfect product for your space to providing valuable recommendations, we're committed to making sure your skylight project is a complete success. 4. Professional Installation Partners: We don't stop at product selection and recommendations; we also match you with a VELUX-trained installer who will handle the installation of your skylights with precision and expertise.
Start with skylights! At VELUX, our mission is clear: we're dedicated to transforming your space with natural light and fresh air with skylights. Whether you're looking to replace old skylights or install brand-new ones, we will guide you every step of the way. Why Choose VELUX? =================== When it comes to skylights and roof windows, VELUX is the global leader. Here's why you should trust us to transform your home: 1. Innovation and Quality: VELUX skylights are renowned for their innovation and unmatched quality. They're designed to let in abundant natural light while keeping your space leak-free and energy-efficient. 2. Huge Product Selection: You’ll have access to a wide range of skylight options, from fixed to vented skylights. And we are here to help tailor the selection to suit your specific needs and style preferences. 3. Expertise: We take pride in what we do at VELUX, and our team is highly trained to guide you through the entire process. From selecting the perfect product for your space to providing valuable recommendations, we're committed to making sure your skylight project is a complete success. 4. Professional Installation Partners: We don't stop at product selection and recommendations; we also match you with a VELUX-trained installer who will handle the installation of your skylights with precision and expertise.
Homecraft is a 2nd generation, family-owned remodeler specializing in decks, roofing, siding, windows, and finished basements. We handle all steps of a project from planning, to permits, to building. When you partner with Homecraft you receive the finest materials - custom cut on site. This provides flexibility in design and perfection in construction. Since '96, homeowners have thanked us for establishing a company that cares. We take your ideas, add our building experience and together create a custom project that extends your living space and adds value to your home. Award Winning.
"Had an excellent experience working with Jeff on my deck project. The work is top notch and exactly what I wanted for a fair price. No BS up sales or any of that. Will definitely look to rehired for any future work."
Gregory B on January 2025
Homecraft is a 2nd generation, family-owned remodeler specializing in decks, roofing, siding, windows, and finished basements. We handle all steps of a project from planning, to permits, to building. When you partner with Homecraft you receive the finest materials - custom cut on site. This provides flexibility in design and perfection in construction. Since '96, homeowners have thanked us for establishing a company that cares. We take your ideas, add our building experience and together create a custom project that extends your living space and adds value to your home. Award Winning.
"Had an excellent experience working with Jeff on my deck project. The work is top notch and exactly what I wanted for a fair price. No BS up sales or any of that. Will definitely look to rehired for any future work."
Gregory B on January 2025
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We are the only company in Maryland offering the “Forever Guarantee” - A guarantee of our workmanship for as long as both you AND the next owner own the home. Unlike other companies we don’t just TELL you something will look good - we SHOW you. We provide full color 3-D renderings of all of our products to show what they will look like on your home PRIOR to you making any decisions or signing a contract. We do this for free the first time we come out as part of our free estimate & design consultation. If you decide to move forward, you don’t have to pay a single dollar until the job is complete and you are satisfied. With the Forever Guarantee, full color 3-D designs before you make a decision, and no payments until the job is complete - our goal is COMPLETE peace of mind for all our customers. We then follow this up with top notch communication, customer service, skill, and quality for Maryland’s leading exterior replacement experience.
"Great work"
Max D on August 2025
We are the only company in Maryland offering the “Forever Guarantee” - A guarantee of our workmanship for as long as both you AND the next owner own the home. Unlike other companies we don’t just TELL you something will look good - we SHOW you. We provide full color 3-D renderings of all of our products to show what they will look like on your home PRIOR to you making any decisions or signing a contract. We do this for free the first time we come out as part of our free estimate & design consultation. If you decide to move forward, you don’t have to pay a single dollar until the job is complete and you are satisfied. With the Forever Guarantee, full color 3-D designs before you make a decision, and no payments until the job is complete - our goal is COMPLETE peace of mind for all our customers. We then follow this up with top notch communication, customer service, skill, and quality for Maryland’s leading exterior replacement experience.
"Great work"
Max D on August 2025
American Windows & Siding of VA, Inc., specializes in custom windows, siding, doors, and roof systems. We use the finest quality products and labor available, and all our work is guaranteed for your peace of mind. Owner operated and employee owned, the company was established in 1991. We have two locations for your convenience - one in Fairfax, Virginia and one in Kensington, Maryland. We’ve been a member of the Better Business Bureau since 1993, and our customer service and proven track record of thousands of satisfied customers have earned us the reputation of an industry leader. All our workers are licensed, bonded, and insured. We have been top rated for the last eleven years in Washington Checkbook Magazine, a leading consumer publication for the DC metro area. In March of 2011 we were recognized as one of the "The Top 200 Remodelers" by Washingtonian Magazine and we have an "A" rating on Angie's List, receiving their Super Service Award for the past two years. With more than 13,000 jobs successfully completed in Northern Virginia, DC and suburban Maryland, we are proud of our reputation. Take a look at what our customers have to say. LICENSE # 49774.
"Had windows and doors installed by this company. The window installation went great. The bad news is that they do not seem competent at installing door hardware. My door has not latched properly since they made some unwanted modifications to the hardware (it worked perfectly before they started modifying it).have had them out three separate times to fix the issue they caused with the door latch and lock. Every “fix” they do seems to make the problem worse. I would steer clear of this company for door installations."
Christian S on April 2025
American Windows & Siding of VA, Inc., specializes in custom windows, siding, doors, and roof systems. We use the finest quality products and labor available, and all our work is guaranteed for your peace of mind. Owner operated and employee owned, the company was established in 1991. We have two locations for your convenience - one in Fairfax, Virginia and one in Kensington, Maryland. We’ve been a member of the Better Business Bureau since 1993, and our customer service and proven track record of thousands of satisfied customers have earned us the reputation of an industry leader. All our workers are licensed, bonded, and insured. We have been top rated for the last eleven years in Washington Checkbook Magazine, a leading consumer publication for the DC metro area. In March of 2011 we were recognized as one of the "The Top 200 Remodelers" by Washingtonian Magazine and we have an "A" rating on Angie's List, receiving their Super Service Award for the past two years. With more than 13,000 jobs successfully completed in Northern Virginia, DC and suburban Maryland, we are proud of our reputation. Take a look at what our customers have to say. LICENSE # 49774.
"Had windows and doors installed by this company. The window installation went great. The bad news is that they do not seem competent at installing door hardware. My door has not latched properly since they made some unwanted modifications to the hardware (it worked perfectly before they started modifying it).have had them out three separate times to fix the issue they caused with the door latch and lock. Every “fix” they do seems to make the problem worse. I would steer clear of this company for door installations."
Christian S on April 2025
If you have a problem with your window, such as broken glass, minor leaks, or a problem with your window being stuck, repairing the broken part might be a cheaper option than replacing the entire window. However, if you have a deteriorating window frame or major leaks, buying a new window will be the better long-term solution.
Installing glass block windows has benefits and disadvantages, as with most materials. The pros and cons can vary depending on the type of glass block and the window location.
Pros
Maintains privacy while letting light into the bathroom
Energy efficient
Sealed to prevent drafts
Aesthetically pleasing
Strong and secure
Cons
Costly to install
Challenging installation
Challenging repair
Window replacement costs between $180 and $410 per window, or an average of $280 per window. However, your specific replacement job could cost as little as $100 or as much as $750. Factors such as frame material, the number of windows you need, and the type of glass you order all impact the overall cost. For example, simple double-glazed windows will cost $3 to $6 per square foot, but the stronger tempered glass ranges from $12 to $14 per square foot.
Glass block installation can be relatively expensive due to the range of material costs and the labor time to assemble this type of specialty window. The process proceeds slowly as the glass does not absorb moisture from mortar and silicone caulk takes longer to harden, leaving spacers to hold up the structure until the caulk or mortar begins to cure. Plus, if your current windows have structural issues or damage, you’ll need to repair them before beginning the project, increasing your bottom line.
The average cost to install glass block windows is about $710, ranging from $460 to $1,000, depending on the size and design of the window, installation type, and location. Different styles of glass blocks also impact the cost:
Clear glass blocks: $10–$30 per block
Colored glass blocks: $25–$40 per block
Acrylic glass blocks: $15–$25 per block
Wavy glass blocks: $10–$30 per block
Alpha glass blocks: $15–$25 per block
Ice glass blocks: $20–$35 per block
Diamond glass blocks: $20–$75 per block
Frosted glass blocks: $30–$35 per block
From average costs to expert advice, get all the answers you need to get your job done.
Is it time to upgrade your home’s windows? Learn more about window replacement costs, considering various window sizes, styles, and energy efficiency.
Find out the cost to replace weatherstripping. Learn about material and labor costs, cost-saving tips, and what impacts your total price.
Learn how to install glass block windows with our detailed guide that shares what you need to know about buying materials, DIYing, and more.
Want a quieter home? Learn how to soundproof windows with seven practical methods that block noise and boost comfort—light sleeper and city dweller approved.
Need to know who made your windows to order replacements or get warranty information? Use this quick guide on how to identify your window manufacturer.
You may have seen glass block windows before without knowing their perks. Learn the pros and cons of glass block windows and how they can benefit your home.
