
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.
Cracked mortar and failed sealant can often be repaired, and we tell you when replacement makes more sense.
Swapping block for a vinyl window gives ventilation and a modern look, but you lose some of the solid privacy of block.
Patterns, sizes and vents can be chosen for privacy and light, with careful mortar and spacing for a strong, tidy result.
Grading and gutters often decide whether a basement window leaks, so we look at both.
Drag the handle to compare.

BeforeAfterLeaks stopped where possible.
Old units removed.
Vinyl window instead of block.
Patterns and vents.
Diffused daylight.
Grade and gutters.
Every topic has its own page with what to expect and how we approach it.
Top brandMarvinA window maker with several collections, including wood and aluminum-clad wood designs and a modern aluminum and fiberglass…Learn more
Top brandMilgardA window maker offering vinyl, fiberglass and aluminum windows for replacement, remodel and new construction.Learn more
Top brandJELD-WENA manufacturer of windows with vinyl, wood and other lines, including energy-efficient models.Learn more Tell us which way the window faces and what matters most to see the glass package that usually suits it.
You tell us what you want or what the windows are doing, and we set an estimate visit that fits your day.
We measure each opening, check the frames, sills and trim for rot and note options for style, glass and installation method.
You get a plain written scope with the window models, glass packages, trim and schedule, and you approve it before anything is ordered.
The windows are ordered or made to your sizes, inspected when they arrive and the work areas are protected.
We remove the old windows, set the new ones plumb and level, flash, insulate, seal and trim each opening.
We clean up, haul away the old windows if you asked, walk you through the finished work and explain how to care for them.
Some block windows have a vent. A vinyl window in the opening is another way to get ventilation.
Cracked mortar, failed sealant or poor drainage outside are common causes.
It is solid but not as efficient as a modern double-pane window. We explain the tradeoffs.
Often yes, depending on the opening and the foundation.
Glass block is hard to break, which is one reason it is popular in basements.
Basement Window ReplacementTight, dry replacement windows for basements, with vinyl or secure options and proper sealing against moisture.Explore
Frosted and Privacy Glass WindowsFrosted, textured and obscure glass that lets light in and keeps the view out, for baths and street-facing…Explore
Window Leak and Water Damage RepairFind and fix leaks around windows, repair rotted sills and frames and protect walls from further damage.Explore
Window Sill and Frame RepairRepair soft, cracked or rotted sills and frames with wood replacement, fillers and primers, saving original windows.Explore Tell us about your project and we will call you back to set up a visit.
Or call (615) 357-7797 to talk now.