Even the best window will leak air, water, and money if it’s installed poorly. Professional window installation means setting each unit level and plumb, insulating the rough-opening gap, integrating flashing with your home’s water-resistive barrier, and sealing interior and exterior joints correctly. Our crews install to AAMA guidelines so your windows shed water, block drafts, and operate smoothly for the life of the product.
Benefits of Window Installation
- Correct flashing and drainage keeps water out of your walls
- Insulated, low-expansion foam gap eliminates hidden drafts
- Level, plumb, square set for smooth, long-term operation
- Manufacturer warranties stay valid with spec installation
- Clean interior and exterior finish, caulked and tidy
What’s Included
- Full-frame and insert (pocket) installation
- Proper sill pan and flashing integration
- Low-expansion foam — never over-packed to bow the frame
- Interior trim and exterior caulk finished to match
Our Installation Process
Every 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 →
Window Installation FAQs
What’s the difference between full-frame and insert installation?
Insert (pocket) installation places a new window inside the existing frame — faster and less invasive when the frame is sound. Full-frame installation removes everything down to the studs, which is best when frames are rotted or you want to change the window size.
Will installation damage my walls or trim?
We protect interior finishes and remove trim carefully. Insert installs preserve most existing trim; full-frame installs include re-trimming. Any disturbed areas are finished cleanly.