Window replacement in Charleston, SC
Impact-rated and energy-efficient replacement windows set plumb, shimmed on full support, and flashed into a sloped pan. We measure every opening before recommending insert versus full-frame — there is no single right answer for a whole house.
Working in Charleston
What this house, on this street, actually needs.
Charleston is not one building stock, it's four. Peninsula single houses with century-old framing, 1950s West Ashley ranches, James Island cottages, and new construction on filled ground — each one fails differently. We scope the house in front of us instead of applying one spec to the whole county.
Downtown and historic-district openings often carry restrictions on material, profile, and grille pattern. Outside those areas we're usually replacing 1990s and 2000s builder units where the seals have failed and the sills were never pan-flashed.
Peninsula addresses mean narrow streets, shared driveways, and limited dumpster placement. We plan staging and street access up front so your neighbors aren't part of the project.
Local conditions we build for
- 01Harbor salt load plus heavy summer humidity
- 02Wind-driven rain from the southeast during storm season
- 03Flood-zone and elevated-structure detailing on much of the peninsula and islands
Areas we cover here: Downtown peninsula & South of Broad, Wagener Terrace & Hampton Park, West Ashley, James Island, Johns Island.
What's included
A standard windows scope in Charleston.
- Opening-by-opening measurement and condition assessment
- Insert or full-frame replacement, whichever the opening actually needs
- Sill pan flashing tied into the weather barrier
- Low-expansion foam insulation and perimeter sealing
- Interior and exterior trim finishing
- Operation, lock, and screen check on every unit
Charleston FAQs
Straight answers before you commit.
Do you need a permit for windows work in Charleston?
Work inside the City of Charleston is permitted through the city's permit center, and anything in a designated historic district can require Board of Architectural Review approval before materials are ordered. We confirm which track your address falls under before we quote a lead time. We pull the permits in our name and provide inspection records with your closeout documents.
What makes windows in Charleston different from inland work?
Heat gain and water intrusion are the two failures here. Low-E coatings cut the summer load, and a properly sloped, flashed pan means the water that inevitably gets past a sealant joint drains back outside instead of soaking the rough opening.
Which Charleston areas do you serve?
We work throughout Charleston, including Downtown peninsula & South of Broad, Wagener Terrace & Hampton Park, West Ashley, James Island, and the surrounding Lowcountry. Our office is at 668 Marina Dr Unit B7 in Charleston.
Are you licensed and insured to work in Charleston?
Yes. We carry general liability and workers' compensation coverage, pull permits under our own license, and provide certificates on request before work begins.
How long does a window replacement project take?
Installation is usually one to three days for a whole house. The longer part is the order — custom and impact-rated units typically run four to ten weeks from approval, and we give you that date up front.
Do I need impact-rated glass?
It depends on your exposure and wind zone. We'll tell you which elevations genuinely justify the cost and where a strong Low-E package is the smarter spend. We don't blanket-upsell impact on every opening.
More in Charleston
Windows elsewhere in the Lowcountry
Windows estimate for your Charleston home.
We look at the actual house, document what we find, and price it in line items.
Free Inspection
Request a Free Lowcountry Inspection.
We walk the whole exterior — roof, walls, openings, drainage — and tell you what's failing, what's fine, and what it costs to fix. No pressure, no guesswork.
- Licensed and insured in South Carolina
- Response within one business day
- (843) 920-6377
- contact@newtrendexterior.com