JTB Construction — Custom Homes & Remodeling in Charleston SC
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Professional window replacement project by JTB Construction in Charleston, SC featuring newly installed double-hung windows with white trim in a bright, empty room with hardwood flooring

Charleston, SC

Window & Door Replacement in Charleston, SC

Old windows and doors leak energy, let in moisture, and make your home feel dated. JTB Construction replaces them with properly fitted, weather-sealed units built for the Lowcountry climate.

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Why Replace Your Windows & Doors?

In Charleston's climate, poorly sealed windows and doors aren't just uncomfortable — they drive up your energy bills and let in moisture that leads to rot and mold. New, properly installed units pay for themselves over time.

  • Lower energy bills — less AC leakage in Charleston summers
  • Improved security with properly fitted frames and hardware
  • Better curb appeal and home value
  • Reduced noise from outside
  • Elimination of drafts, moisture intrusion, and rot
  • Modern, clean look throughout your home
Professional double-hung window replacement in Charleston, SC by JTB Construction showing white frame windows with grid pattern overlooking trees and neighborhood

Common Questions

How much energy can new windows save in a Charleston home?

Charleston summers are brutal on AC bills. Replacing single-pane or failed double-pane windows with modern energy-efficient units typically cuts cooling costs noticeably. Exact savings depend on your existing windows, home size, and HVAC efficiency, but the difference in comfort alone is usually obvious within the first hot week.

How long does a typical window replacement take?

Most homes are wrapped up in 1–3 days for a full-house replacement once the windows arrive. Door replacements are typically same-day. Custom or specialty orders can stretch the lead time on materials, but the install itself is fast.

Do you offer hurricane-rated or impact windows?

Yes. Coastal Charleston-area homes — especially on the islands — benefit from impact-rated windows. We'll quote both standard energy-efficient units and impact-rated options so you can decide based on your location and insurance situation.

Can you replace a single window or do you do whole-house only?

Both. Plenty of jobs start with one or two failed windows. We'll do a single replacement, a phased multi-stage replacement, or the whole house at once — whatever fits your budget and timeline.

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Serving Charleston, Summerville, Mount Pleasant, and surrounding areas. Tyler and Blake will give you a straight, honest quote.

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Serving Charleston, Summerville, Mount Pleasant, Goose Creek, North Charleston, Ladson, Hanahan, Johns Island, James Island, and Moncks Corner — within 100 miles of Charleston, SC.