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Top-Rated Glass block pros in Dover - Updated Nov 2026

Avatar for Castle "The Window People"
Castle "The Window People"
3.5(
172
)
Stained or Specialty Glass - Repair

Serving Dover, DE 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.."
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Recommended by70%of homeowners
Avatar for AAA GLASS AND HOME REPAIR
AAA GLASS AND HOME REPAIR
5.0(
1
)
Glass Blocks - InstallGlass Blocks - Install - For BusinessStained or Specialty Glass - Repair

Serving Dover, DE and surrounding areas

In business since 2022

Free estimates

Emergency services offered

Re screening service prices very on size \n\nWindow service window wont stay up or broken glass window leaking \n\nDoor service door sticking not opening or closing properly door sagging or damaged\n\nPatio door service, door sliding smoothly parts warn out or malfunctioning patio door re screening water damage or leaking repair \n\nDrywall repair and service window and door trim repair or new install\n\nCapping flashing repair

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+27

Recommended by100%of homeowners
Reliable restoration
New to Angi
Glass Blocks - InstallGlass Blocks - Install - For Business

Serving Dover, DE and surrounding areas

In business since 2003

Free estimates

At Reliable Restoration we pride ourselves on being the best remodel company in the area. \nWe've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. \nBeing a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

Response time3 hrs
Atkinson Construction
1.5(
5
)
Glass Blocks - InstallGlass Blocks - Install - For BusinessStained or Specialty Glass - Repair

Serving Dover, DE and surrounding areas

In business since 2006

Free estimates

Credit card accepted

Atkinson Construction is a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. You will find us to be competitively priced while still paying close attention to the details of each and every project we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. Give us a call today to get your project started.

Response time2 days
Recommended by25%of homeowners
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Glass Block FAQs, answered by experts

Yes, professionals can install decorative or colored glass block patterns for a unique look.

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.

Most installations take 1-3 days, depending on the number of blocks and customization requirements.

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 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 Dover, DE homeowners’ guide to glass block services

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