Glass Block Windows in Nashville and Middle Tennessee
Window Styles and Types

Glass Block Windows

Replace old glass block or install new block for light and privacy, or swap it for an operable window.

Glass block lets in light while hiding the view, which makes it popular in basements, bathrooms and stairwells. It is also solid, hard to break and low maintenance. But block does not open, mortar can crack and leak, and older block can be cold and dated. We repair, replace and install glass block windows, and we can also swap block for a vinyl window that opens. Homeowners in Nashville ask us about both when they renovate older basements and baths.

We look at the condition of the block and mortar, the frame and the opening. If the block is sound and only the mortar or sealant has failed, we repair it. If you want ventilation, we discuss replacing the block with a window. For new block windows, we choose patterns and sizes that suit the room and install them with the right mortar, spacers and sealant. We also check drainage outside, since water around a basement block window often comes from the grade.

Repair or replace

Cracked mortar and failed sealant can often be repaired, and we tell you when replacement makes more sense.

Block to window

Swapping block for a vinyl window gives ventilation and a modern look, but you lose some of the solid privacy of block.

New block windows

Patterns, sizes and vents can be chosen for privacy and light, with careful mortar and spacing for a strong, tidy result.

Water outside

Grading and gutters often decide whether a basement window leaks, so we look at both.

What is included

  • Block and mortar inspection
  • Repair or replacement options
  • Operable window swap
  • Sealing and finish
  • Drainage advice
  • Cleanup
Before and after

See the transformation.

Drag the handle to compare.

After: a window and sill with a new white window with clean fresh trim and a smooth sillBefore: a window and sill with a soft, rotted wood frame and sill with peeling paint and dark stainsBeforeAfter
A rotted window frame and sill replaced with fresh new trim. From a soft, rotted wood frame and sill with peeling paint and dark stains to a new white window with clean fresh trim and a smooth sill.
Why it works

What you get with Glass Block Windows

Mortar and seal repair

Leaks stopped where possible.

Block replacement

Old units removed.

Operable swap

Vinyl window instead of block.

New block installs

Patterns and vents.

Light with privacy

Diffused daylight.

Drainage advice

Grade and gutters.

Try it now

Window Glass and Energy Picker

Tell us which way the window faces and what matters most to see the glass package that usually suits it.

How it works

Our process, start to finish.

  1. 01

    Call and describe it

    You tell us what you want or what the windows are doing, and we set an estimate visit that fits your day.

  2. 02

    Measure and plan

    We measure each opening, check the frames, sills and trim for rot and note options for style, glass and installation method.

  3. 03

    Choose and confirm

    You get a plain written scope with the window models, glass packages, trim and schedule, and you approve it before anything is ordered.

  4. 04

    Order and prepare

    The windows are ordered or made to your sizes, inspected when they arrive and the work areas are protected.

  5. 05

    Install and seal

    We remove the old windows, set the new ones plumb and level, flash, insulate, seal and trim each opening.

  6. 06

    Walk through

    We clean up, haul away the old windows if you asked, walk you through the finished work and explain how to care for them.

Questions

Glass Block Windows FAQ

Can I get glass block that opens?

Some block windows have a vent. A vinyl window in the opening is another way to get ventilation.

Why does my block window leak?

Cracked mortar, failed sealant or poor drainage outside are common causes.

Is glass block energy efficient?

It is solid but not as efficient as a modern double-pane window. We explain the tradeoffs.

Can block be replaced with a regular window?

Often yes, depending on the opening and the foundation.

Is it secure?

Glass block is hard to break, which is one reason it is popular in basements.

Next step

Get your Free Estimate for Glass Block Windows.

Tell us about your project and we will call you back to set up a visit.

Or call (615) 357-7797 to talk now.

Tell us about your window project

We will call you back to talk it through and set up a visit.

Prefer to talk? Call (615) 357-7797. We never sell your information.

Call NowFree Estimate