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

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

Last update on March 05, 2026

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Cross Creek Glass
5.0(
1
)
Glass Blocks - InstallGlass Blocks - Install - For Business

Serving Johnston, SC and surrounding areas

In business since 2021

Free estimates

Offers commercial services

Cross Creek Glass is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time1 day
Recommended by100%of homeowners
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Glass Block questions, answered by experts

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.

Yes, many professionals provide custom-cut glass replacements for enclosures that require precise sizing.

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.

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.

The Johnston, SC homeowners’ guide to glass block services

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

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