What are the pros and cons of glass block windows?

• <div><p>Installing <a href="https://www.angi.com/articles/what-are-benefits-glass-block-windows.htm">glass block windows has benefits and disadvantages</a>, as with most materials. The pros and cons can vary depending on the type of glass block and the window location.</p><p><b>Pros</b></p><ul><li><p>Maintains privacy while letting light into the bathroom</p></li><li><p>Energy efficient</p></li><li><p>Sealed to prevent drafts</p></li><li><p>Aesthetically pleasing</p></li><li><p>Strong and secure</p></li></ul><p><b>Cons</b></p><ul><li><p>Costly to install</p></li><li><p>Challenging installation</p></li><li><p>Challenging repair</p></li></ul><p></p></div>

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Q: Are glass block windows a fire hazard?

• <div><p>Glass block windows aren&rsquo;t fire hazards; fire-rated glass block windows can increase your home&rsquo;s fire safety. Modern glass blocks are made with materials that can resist high temperatures and prevent fire spread. Most offer a 45-minute fire rating, while some increase it to two hours. Compared to the typical 20 to 90 minute rating for a double-pane window, glass block can increase your home&rsquo;s safety in the event of a fire.</p></div>

Q: Do glass block windows need maintenance?

• <div><p>Luckily, glass block windows need minimal maintenance. Other than regular cleaning, the only maintenance involved in having a glass block window is inspecting for cracks every year and applying sealer to the mortar joints if the blocks are set in masonry mortar. Glass block windows hold up well against wind and moisture better than traditional windows and are not prone to rot.</p></div>

Q: How are glass blocks energy efficient?

• <div><p>Glass blocks are much thicker than glass panes in traditional windows and serve as better insulators. The overall glass block window is sealed against drafts that allow warm or cool air to escape, saving on energy costs. Since this type of window is sealed airtight into your home, you don&rsquo;t have to worry about air leaks and drafts as often as traditional windows that open and close. When installing glass block windows, look for options that are Energy Star rated, proving their energy efficiency.</p></div>

Q: Are glass walls more expensive than other wall materials?

• <div><p>Glass walls are more expensive overall than their brick or drywall counterparts. However, if you need walls for a building with more than two or three stories, glass walls are the more budget-friendly option. </p></div>

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Verified Reviews for Glass Block Service pros in Lewiston, NY

*The Angi rating for Glass Block Service companies in Lewiston, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Glass Block Service needs.

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Last update on November 17, 2025

Reviewed in December 2018
A great idea - Excellent ! Delivery & pick-up were on time & easy. Rented High Chair, Stroller, cribs & mattresses, Bouncer, Box of toys. By providing all these items at our house, we saved our chidren the trouble of loading up their car with all the "Grandchildren Necessities".... and wouldn't...
Buffalo Niagara Baby Rental
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Reviewed in November 2015
As always, working with Tim and Russell Renovations is a delight. They did extra work at no charge, they pay attention to every little detail and are always on time. Even better, I trust them 100%. Tim and the team are the most trustworthy construction team I've met in 10+ years. While he's...
RUSSELL RENOVATIONS WNY INC.
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Reviewed in October 2015
After a few more weeks, RIck and his crew were able to schedule a day here. While he himself is very personable, the crew was aloof and unfriendly, a far cry from teams that have accompanied other contractors. No eye contact, no hellos. They were here for most of the day, removing the rotted...
M.C.I.
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Reviewed in July 2014
We had two company give us estimates, Modern came back second time. We decided to go with them. Their price is better for our budget and they assured that they had experience with Log homes (our big concern). They did a wonderful job on installation and clean up. Very friendly. We are happy!...
Modern Window of NY Inc
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Reviewed in June 2014
Perfect. They arrived on time, worked diligently, professionally installed 8 glass block windows and cleaned up after themselves. What more could you ask for?
Buffalo Glass Block Co
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Reviewed in July 2013
I had to have them back several times before I saw no signs of the pests. It was very inconvenient. Also when I did have a call back they didn't show or even call. We had to place several calls complaining and after the third time we finally had one person show on time. They said that we needed...
Buffalo Exterminating
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Reviewed in August 2011
The windows were cleaned very well; however, would have liked to have seen more time spent on the screens as well as the non-glass parts of the windows.
Expert Window Cleaning
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Reviewed in May 2006
They did an excellent job the first time around and the frames especially were an improvement. They gave us a price and timeframe, and thankfully stuck to both. We got a good quality double pane glass, and all the windows seem to be very sturdy and solid. This was an all around good job, and...
Window World of Tidewater
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Atlantis Masonry Construction Corp

Atlantis Masonry Construction Corp

Rowland Construction

Rowland Construction

Kenshire Construction

Kenshire Construction

Thompson's Property Services

Thompson's Property Services

Wny home design

Wny home design

RlDunlap Mason and Son

RlDunlap Mason and Son

J.A.Moody Construction Company

J.A.Moody Construction Company

CDS CONSTRUCTION, LLC

CDS CONSTRUCTION, LLC

Fitzgibbon Contracting & Construction

Fitzgibbon Contracting & Construction

JKV Masonry & Concrete

JKV Masonry & Concrete

The Lewiston, NY homeowners’ guide to glass block services

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