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Best glass block pros near Kennett Square, PA

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Top-Rated Glass block pros in Kennett Square - Updated Nov 2026

D. Karpel Construction
4.5(
69
)
Glass Blocks - Install

Serving Kennett Square, PA and surrounding areas

Approved

In business since 1989

Free estimates

Small jobs welcome

"Desmond was responsive to my initial phone call, came to my house to measure and completely explained the process of installation of glass block windows in my basement. I wanted the installation of a glass block window with a hopper vent and another glass block window CUSTOMIZED to receive a vent that we made which was similar to a dryer vent. Desmond took our thoughhts to his window manufacturer, then followed with our CUSTOMIZED VENT to have it incorporated into a the glass block window. His window manufacturer did a perfect job in making the window to our specifications. Once the windows were made, Desmond came and installed them as planned. His work was quality in nature, reasonably priced and completed in a timely manner. Without a doubt, I would highly recommend Desmond for window replacement to anyone!!!"
Response time4 days
7 neighbors recently requested a quote
Recommended by80%of homeowners
West Chester Glass
4.4(
5
)
Stained or Specialty Glass - Repair

Serving Kennett Square, PA and surrounding areas

In business since 1984

Emergency services offered

Credit card accepted

"Called for an estimate and was given a reasonable estimate over the phone. A representative came out to measure. He told me the glass would be ready in a couple of days. It was actually ready the next day!
Two gentlemen delivered the glass and made certain it fit.
Glass looks beautiful.Couldn't be happier with the finished product. Great experience from start to finish.
Highly recommend.


"
Recommended by80%of homeowners
Avatar for Millenium Kitchen and Bathroom Remodeling
Millenium Kitchen and Bathroom Remodeling
4.5(
87
)
Stained or Specialty Glass - Repair

Serving Kennett Square, PA and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Kip the owner contacted me August 4th apologizing for the no-show problem i encountered. He set an appointment and came to my home yesterday. He was able to go through the projects I am interested in completing and provided us with information. He will provide a quote within a week. I would like to edit the previous rating I listed but do not see how to do so."
Living room remodel
Kitchen remodel
Bathroom remodel
Additional Photos
Additional Photos

+45

Recommended by88%of homeowners
Avatar for Castle "The Window People"
Castle "The Window People"
3.5(
172
)
Stained or Specialty Glass - Repair

Serving Kennett Square, PA and surrounding areas

In business since 1977

Free estimates

Emergency services offered

"Made an appt. with Castle Rep, James, for 17 windows and vinyl siding. He spent 1 hour talking about how great his company and windows are before finally getting down to the issue. We were told that CASTLE makes and services their own window, with all the best technology and technicians available. The price per window for energy efficient came out to over $1,200 per double-hung window! And since they make their own products, we could not find a way to compare quality and price with other manufacturers. But his per-window price exceeds the average price of $500-700 by A LOT! When we balked, he made a call to his "manager" to see if we qualified for a "special promotional" discount. If we were to commit right there on the spot, we would get an additional 10% off! Still way to high. We said we would think about it (he got sad and snippy), and that we wanted to hear about the vinyl siding quote before we made any decisions. He told us he could not give us a siding quote until his company did an "eagle view" measurement, which would require another appointment! We had no intention of sitting through ANOTHER high-pressure appointment. High pressure, long-drawn out presentation and he would not leave us with anything in writing! No brochures, prices, nothing! He refused to put anything in writing and we could not have a break down of labor and costs. I even asked him if I could have a copyhh of the window warranty and he said "only if you purchase right now." And they did not come prepared with references or previous job locations! When we further researched the company, we found they did make very excellent products, but the #1 complaint was by far that they did not honor their lifetime warranty and that customer service was horrible. In the end, we chose not to do business.."
Before
After
Recommended by70%of homeowners
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Glass Block FAQs, answered by experts

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.

Glass block windows typically last for 15 to 30 years, which is slightly less than the 20- to 50-year lifespan of standard windows. You can extend their life by resealing them every few years. Professional installation is also key to ensuring the windows are placed correctly and will function properly for years to come. A professional installer will have the necessary skills, tools, and knowledge to install these features and can identify potential issues like damaged frames or cramped areas during a consultation.

Glass block mortar is the best choice for glass block window units. It is specifically formulated for glass block window installation. Glass block mortar is usually a mixture of Portland cement, sand, and special chemicals. It is a white mortar that is applicable inside and outside your home. Do not use regular tile mortar because it may not have the binding strength and flexibility required for glass block windows.

Glass block windows aren’t fire hazards; fire-rated glass block windows can increase your home’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’s safety in the event of a fire.

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

The Kennett Square, PA homeowners’ guide to glass block services

From average costs to expert advice, get all the answers you need to get your job done.