New construction window installation is for open framing — a home addition, a new build, or a gut renovation where the wall is down to the studs. Unlike replacement windows, new-construction units have a nailing fin that fastens to the framing and integrates directly with the house wrap and flashing for a fully watertight envelope. Getting the sequence right — sill pan, fin, flashing tape, and weather barrier lapped correctly — is what keeps water out of a new wall for the long haul.
Benefits of New Construction Window Installation
- Nail-fin units integrated with framing and house wrap
- Correct flashing sequence for a watertight wall
- Ideal for additions, new builds, and gut renovations
- Full freedom to size and place openings
- Coordinated with your framing and siding schedule
Our Installation Process
Every new construction window installation project follows the same proven, AAMA-standard process — the details that keep water out of your walls and your manufacturer warranty valid.
- Precise field measurement of every opening
- Careful removal of the old window (EPA Lead-Safe on older homes)
- Inspection and prep of the rough opening
- New unit set level, plumb, and square
- Low-expansion insulation and correct flashing
- Interior and exterior sealing, trim, and cleanup
See exactly how window installation works →
What Affects the Cost
Pricing is quoted per project after an in-home measurement. The main factors:
- Window size and quantity
- Frame material (vinyl, wood, fiberglass, aluminum)
- Glass package (Low-E, argon, dual vs. triple pane)
- Insert vs. full-frame installation
- Custom shapes, capping, and permits
Read the full window replacement cost guide →
New Construction Window Installation FAQs
What’s the difference between new-construction and replacement windows?
New-construction windows have a nailing fin that attaches to exposed framing and ties into the weather barrier — used when walls are open. Replacement (insert) windows fit into an existing frame without disturbing siding or interior trim.
Can you coordinate with my builder or GC?
Yes. We schedule the window set to fit your framing and dry-in timeline and flash everything to spec so your siding and inspections proceed smoothly.