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TRUSTED BY FERRUM, VA HOMEOWNERS

  • Average homeowner rating star icon3.9
    Average homeowner rating
  • Verified reviews icon15
    Verified glass block window services reviews

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

Grady's Painting Plastering/Construction
2.0(
174
)
Stained or Specialty Glass - Repair

Serving Ferrum, VA and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"We had cracks in the dyed mortar of the bricks above our garage. Grady took the time to match the color, even with the color having aged 10 years, and you would not even be able to tell that there was new mortar. If your project is anything like ours, you will not be disappointed."
Response time11 hrs
Response rate100%
Recommended by57%of homeowners
Glass Block Windows FAQs, answered by experts

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

New glass costs anywhere from $3 to $100 per square foot. More specifically, tempered and insulated glass—a common option for sliding glass doors—costs between $10 and $14 per square foot.

You can still see vaguely into some types of glass block windows at night. Although there won’t be clear definitions, passersby may still see shapes, shadows, and movement through the glass. If you want complete privacy, consider installing diamond glass block windows rather than the typical clear or wavy glass blocks.

Regular cleaning with non-abrasive cleaners helps prevent buildup and maintains clarity.

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.

The Ferrum, VA homeowners’ guide to glass block window services

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