Bay and Bow Replacement Windows for NC Homes
Multi-panel projecting windows that add square footage to a room. Custom-built to your opening — three-panel bays or four- to six-panel bows.
Signs Your Bay & Bow Has Aged Out
The patterns that tell you it's time. None subtle once you're looking for them.
Spot one or two? Time to call. We'll come measure and tell you straight whether it's a fix or a full replacement — no pressure.
- Symptom
Water staining at the seat board
The seam where two angled panels meet is the most failure-prone joint on a bay or bow. Water staining inside is a tell that the seam seal is leaking.
- Symptom
Visible sag at the center panel
The projection has to be supported correctly from above. When the structure starts to sag, the window stops sealing where it meets the wall.
- Symptom
Drafts felt across the seat board
Cold air pooling on the bench area means the insulation behind the seat board has failed or the seam seals are leaking.
- Symptom
Visible separation at angled corners
The seams where the angled side panels meet the center are the most failure-prone joints. When daylight shows at the corner, the unit has aged out.
How We Install Bay and Bow Windows
Bay and bow installs are structural work, not a window swap. The projection has to be supported correctly from above, sealed at the corners, and insulated at the seat and head boards.
- 0LAYERS · MUST AGREEMeasure, material, installStat 1
- 0WK · LEAD TIMECustom bay/bow ordersStat 2
- 0SUBS · OUR CREWWe don't subcontractStat 3
MEASURE
Opening + Cantilever Engineering
The projection has to be supported correctly from above. We engineer the support per opening before the order goes in — every bay and bow gets sized to the existing structure.
- Opening square, plumb, level
- Cantilever load planned per unit
- Seat + head insulation planned
- Custom-fit every opening
MATERIAL
Factory-Sealed Corner Joints
Bays and bows fail at the angled corner joints first. MI and ProVia both build purpose-engineered units with factory-sealed corners — that spec matters more than any individual glass upgrade.
- Factory-sealed corner joints
- Vinyl + fiberglass options
- Wood for historic restoration
- ENERGY STAR® across every line
INSTALL
Cable + Knee-Brace Support
The projection cantilevers outward — without correct support (cable hanger or knee-brace system), gravity slowly sags the unit and the seal at the wall fails. We engineer the support per opening.
- Cable or knee-brace per opening
- Seat + head boards insulated
- Same crew start to finish
- Installation workmanship guaranteed
Manufacturers We Install
The names that show up when you ask any custom shop what they install. No house brands, no rebranded import lines.
Frame Choice for Bay and Bow Windows
Bay and bow projections multiply any frame flex into seal failure at the corners. Fiberglass and aluminum-clad earn the upcharge here for the geometry hold.
- 0MATERIALS · COMMONFor bay and bow unitsStat 1
- 0YR · LIFETIMERange across these fourStat 2
- ALLENERGY · STAR® AVAILABLEAcross every line we carryStat 3
- Best ForMOST NC HOMES
Vinyl
Low maintenance, strong insulation, the most popular choice in this region.
MAINTENANCELOWINSULATIONHIGHLIFETIME25–30 YR - Best ForLONG-TERM DURABILITY
Fiberglass
Stronger than vinyl, holds paint, dimensionally stable in temperature swings.
MAINTENANCELOWINSULATIONVERY HIGHLIFETIME40–50 YR - Best ForHISTORIC HOMES
Wood
For historic homes or specific architectural styles where the look matters.
MAINTENANCEHIGHINSULATIONHIGHLIFETIME50+ YR - Best ForTRADITIONAL WARMTH
Aluminum-clad
Wood interior, aluminum exterior — durability with traditional warmth.
MAINTENANCELOWINSULATIONHIGHLIFETIME30–40 YR
Bay & Bow Window Installation Across Eastern NC
Same crew across all six service areas. Click through to see how we work in your town.
- HQ · 0 mi
Nash CountyBay & Bow Windows in Castalia, NCSee full Castalia page - 10 mi
Nash CountyBay & Bow Windows in Spring Hope, NCSee Spring Hope service - 15 mi
Franklin CountyBay & Bow Windows in Bunn, NCSee Bunn service - 20 mi
Franklin CountyBay & Bow Windows in Louisburg, NCSee Louisburg service - 12 mi
Nash CountyBay & Bow Windows in Nashville, NCSee Nashville service - 28 mi
Franklin CountyBay & Bow Windows in Franklinton, NCSee Franklinton service
Franklin and Nash County.
We're based in Castalia and serve the towns and back roads between Raleigh and Rocky Mount. Six target towns, plus everywhere the back roads run.
How much does a bay or bow window installation cost in eastern NC?
Bay and bow window installations typically run $3,500 to $7,500 per unit installed in eastern NC, depending on panel count, frame material, and structural support. Bows (four to six panels) cost more than bays (three panels). The install includes interior trim and exterior cladding work beyond a flat-opening replacement.
Common Questions
The questions homeowners ask most. Tap to expand. If your situation isn’t covered here, the answer is almost always “yes — call us.”
- 0COMMON · Q&ACovered below — tap any to expandStat 1
- 0HR · REPLYTypical response timeStat 2
- 0ESTIMATEFree in-homeStat 3
Ready for a Bay & Bow Window Estimate?
Free, in-home, written and itemized. We'll show up when we say we will.
- 1 hrAvg. reply time
- FreeWritten estimate
- 0Pressure tactics
- Mon–Sat · 9 AM – 6 PMReal humans answer
Start your free estimate.
Fill in name, phone, and service. We’ll be in touch within the business day.
No phone tree. A live person picks up immediately during business hours.
- HoursMonday – Saturday, 9 AM – 6 PM. Closed Sunday.
- ShopCastalia, NC 27816
- Service AreaFranklin + Nash County
“They came when they said they would, did the work in two days, and the final bill came in below the written estimate.”