Veteran-Owned & Operated

Charleston’s heat, humidity, and storms are hard on windows and doors. When they start to fail, you feel it before you see it: drafty rooms, cooling bills creeping up, and a slider that sticks every time you open it.
JTB Construction handles residential window and door replacement throughout the Charleston area. We have spent more than a decade doing this work for South Carolina families, and if your windows or doors are past their prime, we would be glad to take a look and walk you through your options.
Older units cost you more than curb appeal. Once seals break down and frames warp, conditioned air escapes and outside heat and moisture work their way in, so your cooling system runs longer and harder through our summers.
Comfort and efficiency. Energy-efficient glass and tight, well-built frames keep cool air in and heat out. Rooms that used to feel stuffy or uneven even out, and the space near the glass stops being a hot spot in the afternoon.
Storm and moisture protection. Near the coast, your openings face wind-driven rain, salt air, and the occasional storm with real force behind it. The products we install are chosen with that in mind, using materials that resist moisture intrusion, warping, and the slow wear this climate causes.
Curb appeal. Clean lines, updated hardware, and a fresh finish can change a dated facade the moment the work is finished, and it reads from the street.
A better entry. A quality entry door seals tight and gives your front porch a welcoming look. Patio and sliding doors bring in natural light while holding up to the weather.


You can buy an excellent window and still end up with a leak, because a window is only as good as the seal around it. Poor installation is a leading cause of early failure, drafts, and water intrusion, and it is the part of the job a homeowner has no way to inspect once the trim goes on.
So we take the time to do it right. Every opening gets measured precisely, set level and square, and flashed and sealed properly before anything is closed up. In a climate this wet, that sequence is what determines whether a replacement lasts twenty years or starts leaking in three. We make sure it lasts.
We visit your home to understand what you want to accomplish, measure each opening precisely, and talk through styles, materials, and options that fit your goals and budget.
We help you choose replacement windows and doors that suit your home, from energy-efficient glass to entry, patio, and sliding door styles.
Once your products arrive, we set a schedule that works for you and prepare each work area to protect your floors, walls, and furnishings.
Our crew removes the old units carefully and installs each new window or door level, square, and secure, with proper flashing and sealing at every opening.
We clean up completely and walk the home with you to confirm every window and door operates smoothly and meets our standard and yours.
Homeowners across our service area work with us because we show up prepared and do the job right. JTB Construction is a veteran-owned residential builder with more than 10 years in business and over 500 completed residential projects. We are a licensed South Carolina residential builder (RBB 50612) and fully insured.
Our team brings skill and pride to each window replacement project and will treat your home like their own. Our owners and crew are local, and they care that every customer is satisfied with the finished result.
Integrity and service are at the heart of everything we do.
Reliable service from a local team you can trust.
Work with our in-house team from start to finish.
Licensed South Carolina Residential Builder. Fully insured.
The common signs are drafts near the glass, condensation between panes, difficulty opening or closing, and rising cooling costs. If your windows are more than a couple of decades old or the frames are visibly warped, replacement is usually the better long-term call. We are happy to assess them and give you an honest recommendation.
Energy-efficient windows and well-sealed doors reduce how much conditioned air escapes and how much heat gets in. Most homeowners notice their system runs less and rooms feel more consistent. The exact savings depend on your home, your current units, and the products you choose, so we will not put a number on it, but a better seal and better glass make a real difference.
It depends on how many openings you are replacing and what you choose. Many projects finish in a day or two once materials arrive, while larger jobs with multiple doors and full window sets run longer. The wait is usually on the products, not the labor, so we give you a clear schedule at your consultation.
Absolutely. We handle projects of every size, from a single failing window to a full home replacement. If you want to tackle the worst openings first and plan the rest over time, we can help you prioritize based on condition, comfort, and budget.
Entry, patio, and sliding doors for homes throughout the area. Whether you want a welcoming front entry or a wide slider that opens your living space to the backyard, we help you choose doors that fit your style and stand up to the local climate, and we install them with proper sealing.
Yes. We walk you through styles, materials, and energy-efficient options at your consultation and match them to your home and budget, so you feel confident in the choice rather than overwhelmed by the catalog.
Yes. JTB Construction is a licensed and insured South Carolina residential builder, license number RBB 50612, and window and door replacement is part of our regular residential work.
If your windows are drafty or your doors have seen better days, reach out to JTB Construction for a free quote and a consultation. We will show you what quality window and door replacement looks like, done right.