Charleston Window Pros provides professional glass repair and sealed unit replacement in Charleston, SC for residential and commercial properties across the South Carolina Lowcountry. Most calls that begin as a window replacement should end as a glass repair, and this page exists to make that easy to ask for. A failed seal, a cracked lite or a broken pane is a component fault, not grounds for replacing a working frame.
Haze between the panes means the perimeter seal has given up and the desiccant in the spacer is spent. The frame, the hardware and the sash are all untouched by that. We measure the pocket, order the unit to that dimension and glass package, and set it in the existing sash. On an eight-window house that is routinely a quarter of what a replacement quote would say.
We read the spacer for a date code before quoting, because it tells you something the customer cannot see. If most of the house is on the same clock and the units are twenty-plus years old, replacing three now and three next year is a nuisance. If it is one odd unit that failed early, replace that one and move on with your life.
On original single-glazed sash the work is different and it is genuinely craft. The old putty comes out with a hot knife rather than a chisel, the glazing points are saved where possible, the rebate is primed with oil before new putty goes in, and the pane is bedded rather than dropped in dry. Done properly it lasts decades, and it can be done again by the next person.
Wavy old glass is worth saving. Cylinder and early float glass has a texture that reads as depth from the street, and the districts value it. Where a pane is genuinely gone we source restoration glass with a comparable distortion rather than setting modern float into a nineteenth-century sash and flattening the whole elevation.
This is also the route that keeps a historic house compliant without a replacement fight. The Board's window policy allows safety film to be applied to true divided lite windows when the Building Code requires it, so a repaired original sash can be brought into a code conversation rather than pulled out of the building. Compliance and the original glass are not mutually exclusive here, whatever a replacement quote implies.
On breakage we prioritize getting the building closed. A same-day board-up with the opening measured at the same visit, then the correct lite cut and set once it arrives. Tempered and laminated glass has to be ordered to size and cannot be cut afterwards, so the measurement is the whole job on those. We measure twice and write the sizes on the board we screw over the opening.
When we do say replace the window, we say why in a sentence you can check. The sash is racked and will not hold a square pane. The sill is gone below the glazing rebate. The frame has moved with the building and the unit will not seat. Anything less than that and you are being sold a window you do not need.
Our licensed and insured team brings the right materials and equipment to every job — true divided lites bedded in glazing putty, simulated divided lite bars with a shadow spacer between panes, authentic divided lite fused-pane sash, aluminum-clad and fiberglass-clad wood frames, operable louvered Bahama and panel shutters, 7/16-inch wood structural panel opening protection — and backs the work with a written workmanship warranty. We serve Charleston and nearby communities including Mount Pleasant, North Charleston, Summerville, Goose Creek.
What We Handle
Everything our glass repair and sealed unit replacement in Charleston covers
One crew, one point of contact, and the full range of glass repair and sealed unit replacement work in Charleston, SC. If it is on this list we do it in house rather than handing it to a subcontractor:
- glass repair Charleston SC
- foggy window repair
- insulated glass unit replacement
- failed seal double pane
- broken window glass replacement
- tempered glass cut to size
- laminated glass replacement
- spacer date code
- single pane glass reglazing
- putty glazing repair
- emergency board up
- restoration glass
- sash reglazing historic windows
- mirror and table top glass
- storefront lite replacement
Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Charleston services.
Materials, equipment and how we do glass repair and sealed unit replacement
The difference between glass repair and sealed unit replacement that lasts and glass repair and sealed unit replacement that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with true divided lites bedded in glazing putty, simulated divided lite bars with a shadow spacer between panes, authentic divided lite fused-pane sash, aluminum-clad and fiberglass-clad wood frames, spec them to the job instead of to the invoice, and write the material grades into the free estimate so you know exactly what you are buying.
Every Charleston job runs the same way: site walk and measurements, written scope and fixed price, protection of the surrounding area, then the work itself with a daily clean-up. Years of window work in the South Carolina Lowcountry means we have already met whatever your property is going to throw at us — awkward access, older construction, an HOA with opinions.
Where we do glass repair and sealed unit replacement outside Charleston
Charleston Window Pros covers Charleston and the surrounding communities of the South Carolina Lowcountry. Crews run out to the same nearby cities every week, so an out-of-town job does not mean an out-of-town price.
- Glass Repair and Sealed Unit Replacement in Mount Pleasant, SC — Charleston County, population 90,801 at the 2020 census
- Glass Repair and Sealed Unit Replacement in North Charleston, SC — Charleston County, population 114,852 at the 2020 census, split across Charleston, Dorchester and Berkeley counties
- Glass Repair and Sealed Unit Replacement in Summerville, SC — Dorchester County, population 50,915 at the 2020 census, with parts in Berkeley and Charleston counties
- Glass Repair and Sealed Unit Replacement in Goose Creek, SC — Berkeley County, population 45,946 at the 2020 census
- Glass Repair and Sealed Unit Replacement in Hanahan, SC — Berkeley County, population 20,325 at the 2020 census
- Glass Repair and Sealed Unit Replacement in Ladson, SC — Berkeley County, population 15,550 at the 2020 census, partly in Charleston County
Start on the Charleston Window Pros homepage for a free estimate, or call (844) 511-2320 and describe the job.
Why Charleston Chooses Charleston Window Pros
- ✓We quote elevation by elevation, because the Board's purview is visibility from a public right-of-way and the back of a Charleston house is frequently a different product from the front
- ✓Your address gets placed in the district and building-age matrix the BAR adopted in December 2025 before any brand name is spoken, so you learn what is approvable before you learn what it costs
- ✓We will tell you when the wind code is satisfied by protecting the opening instead of replacing the glass, which on an original sash is usually both cheaper and far easier to get approved
- ✓No vinyl quoted where the policy forbids it, and no relabelling a vinyl-cored product as composite to try to slip it past staff
The standards behind glass repair and sealed unit replacement
Quality here is not a matter of opinion — it is written down. The glass repair and sealed unit replacement work we do in Charleston follows published industry standards: NFRC sets the U-factor and SHGC ratings on every window label, and ENERGY STAR defines the efficiency thresholds by climate zone. If a contractor cannot tell you which standard a detail comes from, that is worth asking about before you sign.
Every glass repair and sealed unit replacement project in Charleston gets the same attention, whether it is a single room or a full commercial job. We show up on schedule, keep the site clean, and stand behind the work — the estimate is free and there is no pressure.
Ready to get started? Call (844) 511-2320 for a free glass repair and sealed unit replacement free estimate in Charleston, or request a quote and we'll get right back to you.