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Top-Rated Glass block installation pros in Garrison - Updated Nov 2026

Avatar for Fenner and Miller, LLC
Fenner and Miller, LLC
1.3(
2
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Glass Blocks - Install

Serving Garrison, ND and surrounding areas

In business since 2017

Free estimates

Small jobs welcome

Fenner and Miller, LLC, offers a broad range of interior and exterior home improvement services. Whether you are craving upgraded floors or you have a fence in need of some repair, call us to get the job done right the first time. Put us on speed dial and we will be your one and only call for quality home improvement service!

Response time2 days
Recommended by100%of homeowners
Glass Block Windows FAQs, answered by experts

DIY is possible for small projects, but professional installation ensures proper sealing, structural integrity, and a precise finish.

Their thickness depends on application, but most glass walls are typically 3/8 to 3/4 of an inch thick. Although it’s not as common, single panes of glass can also be 1 inch thick.

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.

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

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 Garrison, ND homeowners’ guide to glass block window services

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