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TRUSTED BY WILLIAMSPORT, MD HOMEOWNERS
4.5
Average homeowner rating59
Verified glass block window services reviews
Verified Reviews for Glass Block Window Service pros in Williamsport, MD
*The Angi rating for Glass Block Window Service companies in Williamsport, 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 Williamsport, 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 December 15, 2025
Find Glass block installation pros in Williamsport

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!
"I was getting water in my basement every time it rained, Dan helped me rule out other causes and recommended a french drain. Basement has been bone dry ever since. The workers took great care and even repaired the water damage from before. I highly recommend calling Basement Gurus for any basement related needs"
Andrew R on December 2025
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!
"I was getting water in my basement every time it rained, Dan helped me rule out other causes and recommended a french drain. Basement has been bone dry ever since. The workers took great care and even repaired the water damage from before. I highly recommend calling Basement Gurus for any basement related needs"
Andrew R on December 2025

Power Home Remodeling
Power Home Remodeling
Does your home need replacement windows that are high-quality, energy-efficient, and come with a lifetime warranty? We're the nation's largest full-service exterior home remodeler and over 1000 lifetime Angi Super Service Awards. We can help transform your house into the beautiful and cost-effective home you've always dreamed of. At Power, you'll love our friendly, knowledgeable, and professional remodeling consultants and be delighted by our top-rated installation process. But don't take it from us. We've served over 1,000,000 customers across the U.S earning a 95% overall satisfaction rating. For a free, no-obligation estimate, call: (610) 990-4243 or visit https://powerhrg.com/project-quote/.
"At first I rated them a 5 but they had me put in a review before the job was even completed. They used old tarp from previous jobs. There were debris all over my bedding and furniture from the old plastic tarp. If they needed new tarp I would supply them. Who knows what the previous projects had in their homes. I didn't notice till after they left. Yes, you definitely will need to vacuum. Which I expected, but not having to wash all bedding and vacuum furniture. The windows look good, but it's so much cleaning afterwards. So when they say you'll never notice they were there. Was not true at all. One of my bushes in the front were also damaged and trampled on."
Phetdara P on October 2025
Does your home need replacement windows that are high-quality, energy-efficient, and come with a lifetime warranty? We're the nation's largest full-service exterior home remodeler and over 1000 lifetime Angi Super Service Awards. We can help transform your house into the beautiful and cost-effective home you've always dreamed of. At Power, you'll love our friendly, knowledgeable, and professional remodeling consultants and be delighted by our top-rated installation process. But don't take it from us. We've served over 1,000,000 customers across the U.S earning a 95% overall satisfaction rating. For a free, no-obligation estimate, call: (610) 990-4243 or visit https://powerhrg.com/project-quote/.
"At first I rated them a 5 but they had me put in a review before the job was even completed. They used old tarp from previous jobs. There were debris all over my bedding and furniture from the old plastic tarp. If they needed new tarp I would supply them. Who knows what the previous projects had in their homes. I didn't notice till after they left. Yes, you definitely will need to vacuum. Which I expected, but not having to wash all bedding and vacuum furniture. The windows look good, but it's so much cleaning afterwards. So when they say you'll never notice they were there. Was not true at all. One of my bushes in the front were also damaged and trampled on."
Phetdara P on October 2025

Aspen Home Improvements
Aspen Home Improvements
Looking for a family-owned company with quality products and lifetime warranties? You have found us here at Aspen Home Improvements. Contact us today for information on window replacement!
"I am still waiting for the return of my deposit as it has been a week since I put this review on hold after putting in the notice that day 24 June of cancellation by email and next day mail. As I have said before I am a disabled Vet, Senior citizen with health problems. I have copies of the emails that I sent on the days of 06/24/2023 and by next day Mail on the 27th notarized copies of the cancellation. Tried calling but went to voice mail. No work has been done so a rating cannot be done on the work, only the price. This job was way overpriced and never got the chance to compare. The salesman was a good person but I have my family doing it for thousands less."
Daniel S on July 2023
Looking for a family-owned company with quality products and lifetime warranties? You have found us here at Aspen Home Improvements. Contact us today for information on window replacement!
"I am still waiting for the return of my deposit as it has been a week since I put this review on hold after putting in the notice that day 24 June of cancellation by email and next day mail. As I have said before I am a disabled Vet, Senior citizen with health problems. I have copies of the emails that I sent on the days of 06/24/2023 and by next day Mail on the 27th notarized copies of the cancellation. Tried calling but went to voice mail. No work has been done so a rating cannot be done on the work, only the price. This job was way overpriced and never got the chance to compare. The salesman was a good person but I have my family doing it for thousands less."
Daniel S on July 2023

Home Genius Exteriors
Home Genius Exteriors
Elevate your home with Home Genius Exteriors, setting the standard in Maryland and Washington DC by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It’s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!
"Very professional did a wonderful job everybody involved was very polite and helpful explained everything thoroughly Tony was my project manager he and the crew did a fantastic job "
Bettie S on November 2025
Elevate your home with Home Genius Exteriors, setting the standard in Maryland and Washington DC by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It’s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!
"Very professional did a wonderful job everybody involved was very polite and helpful explained everything thoroughly Tony was my project manager he and the crew did a fantastic job "
Bettie S on November 2025

Always Waterproofing
Always Waterproofing
Always Waterproofing has 35 years of experience in the industry. We are locally owned and operated. If you want the job right the first time, call James today!
"They were professional."
Wendy A on November 2025
Always Waterproofing has 35 years of experience in the industry. We are locally owned and operated. If you want the job right the first time, call James today!
"They were professional."
Wendy A on November 2025

Long Home
Long Home
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of window projects and specialize in multiple window instillation for residential homes. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
"R"
Gus J on December 2023
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of window projects and specialize in multiple window instillation for residential homes. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
"R"
Gus J on December 2023

Rite Window & Bath
Rite Window & Bath
Rite Window has a proven history of customer satisfaction and service. Since August 2000, we have helped over 35,000 homeowners in New England replace their windows, doors, or shower and bath systems. Headquartered in Woburn, MA, Rite Window is locally owned and operated and serves the entire Greater Boston area, including Southern New Hampshire. We urge you to learn more about our company by talking to your neighbors and reading our reviews online. To see our full website, please visit us at www.RiteWindow.com to learn more about Rite Window and all of our product offerings.
"Great service"
anthony M on June 2025
Rite Window has a proven history of customer satisfaction and service. Since August 2000, we have helped over 35,000 homeowners in New England replace their windows, doors, or shower and bath systems. Headquartered in Woburn, MA, Rite Window is locally owned and operated and serves the entire Greater Boston area, including Southern New Hampshire. We urge you to learn more about our company by talking to your neighbors and reading our reviews online. To see our full website, please visit us at www.RiteWindow.com to learn more about Rite Window and all of our product offerings.
"Great service"
anthony M on June 2025

Renewal by Andersen
Renewal by Andersen
Replacement Window Installation, Replacement Patio Door Installation, Replacement Entry Door Installation
" Renewal by Andersen of Wyoming did an incredible job with installing windows in our home. Thank you to the team who did the install and to the company for creating these exceptional windows."
Janita K on December 2025
Replacement Window Installation, Replacement Patio Door Installation, Replacement Entry Door Installation
" Renewal by Andersen of Wyoming did an incredible job with installing windows in our home. Thank you to the team who did the install and to the company for creating these exceptional windows."
Janita K on December 2025

Universal Windows Direct of Northern Virginia
Universal Windows Direct of Northern Virginia
Universal Windows Direct was originally founded in Cleveland, Ohio in 2002 by William Barr and Michael Strmac. It was their mission to create a home improvement company that offers high quality home improvement goods at the best possible value. What began as two guys in a 350 square foot office quickly grew to become one of the nation's leading remodeling companies. Today, Universal Windows Direct represents thousands of customers and has a rapidly growing network of locations nationwide, all of which are actively involved in the communities they serve. Universal Windows Direct opened Universal Windows Direct of St. Louis to serve St. Louis customers in 2017.
Universal Windows Direct was originally founded in Cleveland, Ohio in 2002 by William Barr and Michael Strmac. It was their mission to create a home improvement company that offers high quality home improvement goods at the best possible value. What began as two guys in a 350 square foot office quickly grew to become one of the nation's leading remodeling companies. Today, Universal Windows Direct represents thousands of customers and has a rapidly growing network of locations nationwide, all of which are actively involved in the communities they serve. Universal Windows Direct opened Universal Windows Direct of St. Louis to serve St. Louis customers in 2017.
FAQs for glass block window service projects in Williamsport, MD
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
The Williamsport, MD homeowners’ guide to glass block window services
From average costs to expert advice, get all the answers you need to get your job done.
•Discover the average glass block window installation cost, including key price factors and tips to help you budget your project with confidence.

Smart glass makes your home more comfortable and energy-efficient, but at what price? Learn how much smart glass costs and if it’s a good option for you.

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

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 to know how long vinyl windows last? Learn the average lifespan of vinyl windows and the core factors that affect their performance over time.

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.
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