Get matched with top glass block installation pros in Kensington, MD
There are 4 highly-rated local glass block installation pros.
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587 Verified Reviews for Glass Block Window Service pros in Kensington, MD
*The Angi rating for Glass Block Window Service companies in Kensington, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Glass Block Window Service needs.
*The HomeAdvisor rating for Glass Block Window Service companies in Kensington, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Glass Block Window Service needs.
Last update on April 25, 2025
Glass block installation pros in Kensington
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.
"Great excellent work"
Michael W on April 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.
"Great excellent work"
Michael W on April 2025
Simply put - we believe that improving your home should be enjoyable. That is why we spent years designing our consultations, installations, and customer care experiences to minimize stress and provide every client with a fair and honest home improvement experience. Founded in 2005, Windows on Washington has become one of the area’s most respected home improvement companies because we make our clients' homes more beautiful, comfortable, and energy efficient. We are proud Angie’s Super Service Award winners, which we’ve now earned for seven consecutive years. We have an A+ rating with the Better Business Bureau and have never had one filed complaint. In addition, we have hundreds of positive customer reviews on Angie’s List, Customer Lobby, Home Advisor, Guild Quality, Houzz, and Yelp.
"We were very pleased with the work done by Windows On Washington for our insulation project. They were very friendly and did a great job of communicating with us throughout the project. The estimator Shayne was very helpful in providing us and explaining several options for our insulation needs. And the installation team did quality work with attention to detail. Brian, Anthony and Rubin were very willing to explain any details to us as they performed the work and went the extra mile to ensure we were happy with the end result. We recommend them highly"
Cristl P on April 2025
Simply put - we believe that improving your home should be enjoyable. That is why we spent years designing our consultations, installations, and customer care experiences to minimize stress and provide every client with a fair and honest home improvement experience. Founded in 2005, Windows on Washington has become one of the area’s most respected home improvement companies because we make our clients' homes more beautiful, comfortable, and energy efficient. We are proud Angie’s Super Service Award winners, which we’ve now earned for seven consecutive years. We have an A+ rating with the Better Business Bureau and have never had one filed complaint. In addition, we have hundreds of positive customer reviews on Angie’s List, Customer Lobby, Home Advisor, Guild Quality, Houzz, and Yelp.
"We were very pleased with the work done by Windows On Washington for our insulation project. They were very friendly and did a great job of communicating with us throughout the project. The estimator Shayne was very helpful in providing us and explaining several options for our insulation needs. And the installation team did quality work with attention to detail. Brian, Anthony and Rubin were very willing to explain any details to us as they performed the work and went the extra mile to ensure we were happy with the end result. We recommend them highly"
Cristl P on April 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.
"Bottom Line: This is the first time we have used this company, and they did excellent work for a reasonable price, and more importantly, built a huge amount of trust with the customer. Communication: Scheduling the initial estimate was easy, but the back-and-forth communication required to finalize the many detailed options was a bit slow; however, the owner Scott Halle interceded and timely communication continued throughout the rest of the process. Scoping Work: This is where Zen Windows really excels, primarily because of the vast knowledge of James Bond. We wanted to replace the single door with side transoms with something that would maximize the opening space. James expertly walked us through the options with cost and wall modification comparisons. In addition, the header above the current door was swelling and pinning the door, and James evaluated the issue, likely water seeping down from an unflashed deck, and provided peace of mind his guys could fix it on site during installation. Quality of Work: Frankly, 75-80% of contractors fail here for three primary reasons: a horrible handoff from the product specialist to the onsite project foreman, project foreman and workers making assumptions about details vice asking the customer, and lack of quality detailed work. The foreman excelled in these areas ensuring we were on the same page for various details such as casing, caulking, and external trim. In addition, he completely replaced the rotted wood structure above and along the sides of the door and added customer-provided insulation where there were gaps. To keep the project on track, they brought in another expert worker and management arrived to ensure the quality of work was high. The end product was beautiful. Pricing: Price was the best of three highly ranked Angie’s List companies. Zen Windows’ expertise, willingness to explain the details of the project, timely communication, and excellent work took the hassle out of this project."
David G on March 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.
"Bottom Line: This is the first time we have used this company, and they did excellent work for a reasonable price, and more importantly, built a huge amount of trust with the customer. Communication: Scheduling the initial estimate was easy, but the back-and-forth communication required to finalize the many detailed options was a bit slow; however, the owner Scott Halle interceded and timely communication continued throughout the rest of the process. Scoping Work: This is where Zen Windows really excels, primarily because of the vast knowledge of James Bond. We wanted to replace the single door with side transoms with something that would maximize the opening space. James expertly walked us through the options with cost and wall modification comparisons. In addition, the header above the current door was swelling and pinning the door, and James evaluated the issue, likely water seeping down from an unflashed deck, and provided peace of mind his guys could fix it on site during installation. Quality of Work: Frankly, 75-80% of contractors fail here for three primary reasons: a horrible handoff from the product specialist to the onsite project foreman, project foreman and workers making assumptions about details vice asking the customer, and lack of quality detailed work. The foreman excelled in these areas ensuring we were on the same page for various details such as casing, caulking, and external trim. In addition, he completely replaced the rotted wood structure above and along the sides of the door and added customer-provided insulation where there were gaps. To keep the project on track, they brought in another expert worker and management arrived to ensure the quality of work was high. The end product was beautiful. Pricing: Price was the best of three highly ranked Angie’s List companies. Zen Windows’ expertise, willingness to explain the details of the project, timely communication, and excellent work took the hassle out of this project."
David G on March 2025
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Locally owned and operated. We are here to turn your project idea into reality. Additional phone number - (703) 830-6103.
"It was amazing. Before the work, it was amazing how little rain it would take to cause standing water in the yard. After they completed, we got 2" of rain in one day and had no standing water anywhere in the area they worked."
Carrie O on November 2020
Locally owned and operated. We are here to turn your project idea into reality. Additional phone number - (703) 830-6103.
"It was amazing. Before the work, it was amazing how little rain it would take to cause standing water in the yard. After they completed, we got 2" of rain in one day and had no standing water anywhere in the area they worked."
Carrie O on November 2020
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.
At Window Nation, we know replacement windows. We’re third-generation window replacement experts who have been lucky to provide homeowners replacement windows, siding, and doors for over fifteen years. We opened our first showroom in Maryland in 2006, quickly growing to serve homeowners in cities across the country – and we’re not stopping there. We’re grateful for every homeowner who has trusted us to upgrade their most important asset: their home. We’ve learned a lot about home improvement over the years, but the most important thing we learned isn’t about window replacement. We learned the home improvement industry isn’t about offering the best windows, siding and doors; it’s about the relationships we build with our customers.
"We hire Window Nation to replace 10 windows at our house, after a few months one of the panel leaked and was defective. Window Nation replace the panel at no cost under their warranty. We are very satisfy with the process and would hire them again to replace the remaining windows at our house."
Michael P on February 2020
At Window Nation, we know replacement windows. We’re third-generation window replacement experts who have been lucky to provide homeowners replacement windows, siding, and doors for over fifteen years. We opened our first showroom in Maryland in 2006, quickly growing to serve homeowners in cities across the country – and we’re not stopping there. We’re grateful for every homeowner who has trusted us to upgrade their most important asset: their home. We’ve learned a lot about home improvement over the years, but the most important thing we learned isn’t about window replacement. We learned the home improvement industry isn’t about offering the best windows, siding and doors; it’s about the relationships we build with our customers.
"We hire Window Nation to replace 10 windows at our house, after a few months one of the panel leaked and was defective. Window Nation replace the panel at no cost under their warranty. We are very satisfy with the process and would hire them again to replace the remaining windows at our house."
Michael P on February 2020
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 - contact@unicorpmail.com.
"We hired Unicorp to change front door because of superb review on Angi, but disappointed. 1. It's a small company using subcontractors to do its work; Contrary to its claim, those subcontractors DO NOT work exclusively for Unicorp. 2. After subcontractors got paid, you will not see them again for the job. The service team seems only one person (JR). It is hard to make an appt, since he has to supervise a lot of subcontractors' work, and only do service when he is supervising near you. Specific problems: -Ghost swing after installation (i.e. door swings to close by itself). Had to request adjustment at least twice. -Fainted finish after a few years while still in warranty, but we were advised to paint ourselves. -Very thin layer of finish, and very easy to get scratch to show white underline color; -Have PROBLEM to LOCK the door. After it was "fixed", problem showed again. -Subcontractor used wood with black stains, suspect mold, to install the door; Brand new door had minor defect."
Christine c on March 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 - contact@unicorpmail.com.
"We hired Unicorp to change front door because of superb review on Angi, but disappointed. 1. It's a small company using subcontractors to do its work; Contrary to its claim, those subcontractors DO NOT work exclusively for Unicorp. 2. After subcontractors got paid, you will not see them again for the job. The service team seems only one person (JR). It is hard to make an appt, since he has to supervise a lot of subcontractors' work, and only do service when he is supervising near you. Specific problems: -Ghost swing after installation (i.e. door swings to close by itself). Had to request adjustment at least twice. -Fainted finish after a few years while still in warranty, but we were advised to paint ourselves. -Very thin layer of finish, and very easy to get scratch to show white underline color; -Have PROBLEM to LOCK the door. After it was "fixed", problem showed again. -Subcontractor used wood with black stains, suspect mold, to install the door; Brand new door had minor defect."
Christine c on March 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.
"Stephen was very Professional and Knowledgeable. He made the the experience very enjoyable. Looking forward to do my business with him and Peak Custom Remolding."
Charles S on February 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.
"Stephen was very Professional and Knowledgeable. He made the the experience very enjoyable. Looking forward to do my business with him and Peak Custom Remolding."
Charles S on February 2025
Marshall Roofing, Siding & Windows is a top roofing, siding, windows, and gutters company based in Northern Virginia. Throughout the years providing the highest level of customer service and 100% homeowner satisfaction has been the pinnacle principle at Marshall Roofing Siding & Windows. The belief that each and every homeowner deserves to receive good value for their money is the driving concept on the functions of the company. **Popular Returning Spring Promotion Coming Soon** (Inquire for additional details)
"We had Marshall Roofing do an extensive replacement of our 40 year old house exterior. They replaced aluminum siding, soffits and fascia, plastic window trim and door wood trim with Hardie Plank products. In addition, they installed a new roof and gutters. Their work was impressive-they provided an accurate and comprehensive cost proposal, detailed schedule for product delivery and installation and completed the work as planned. The house looks great and should not require further exterior maintenance for years. Their cost was competitive with other proposals, but their responsiveness to our initial inquiry, thorough pre-proposal inspection and recommendations convinced us to chose them. Strong recommendation."
William H on February 2020
Marshall Roofing, Siding & Windows is a top roofing, siding, windows, and gutters company based in Northern Virginia. Throughout the years providing the highest level of customer service and 100% homeowner satisfaction has been the pinnacle principle at Marshall Roofing Siding & Windows. The belief that each and every homeowner deserves to receive good value for their money is the driving concept on the functions of the company. **Popular Returning Spring Promotion Coming Soon** (Inquire for additional details)
"We had Marshall Roofing do an extensive replacement of our 40 year old house exterior. They replaced aluminum siding, soffits and fascia, plastic window trim and door wood trim with Hardie Plank products. In addition, they installed a new roof and gutters. Their work was impressive-they provided an accurate and comprehensive cost proposal, detailed schedule for product delivery and installation and completed the work as planned. The house looks great and should not require further exterior maintenance for years. Their cost was competitive with other proposals, but their responsiveness to our initial inquiry, thorough pre-proposal inspection and recommendations convinced us to chose them. Strong recommendation."
William H on February 2020
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.
"Our review is based on the purchase (part 1) for replacing siding for both side of our home. Jacob L. was very professional, on time, and honest. He knows what he is selling. We learned a lot about our home during his presentation. Before we bought our home we paid for a professional home inspection. We thought our house inspector was very good but he did miss something---the siding on the sides of our home was installed extremely bad. Jacob pointed out so much that we just didn't know and should have be caught during our home inpection. Thanks Jacob!!"
Mearen B on March 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.
"Our review is based on the purchase (part 1) for replacing siding for both side of our home. Jacob L. was very professional, on time, and honest. He knows what he is selling. We learned a lot about our home during his presentation. Before we bought our home we paid for a professional home inspection. We thought our house inspector was very good but he did miss something---the siding on the sides of our home was installed extremely bad. Jacob pointed out so much that we just didn't know and should have be caught during our home inpection. Thanks Jacob!!"
Mearen B on March 2025
Glass block window services FAQs
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
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- Wheaton
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- Somerset
- Bethesda
- Aspen Hill
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- Takoma Park
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- Berwyn Heights
- Mount Rainier
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