What this covers
New window installation creates an opening or fills one in new construction. In an existing wall, the carpenter frames a header sized to carry the load above, with king and jack studs and a sill, and supports the wall while it is open. The rough opening is wrapped and flashed with a sill pan, the window set on shims and checked plumb, level and square, fastened through the flange or jambs, flashed at the sides and head, and insulated around the frame. Siding is patched to meet the new trim, and the interior gets drywall and casing. Where the local code requires a permit, or egress and safety glazing rules apply, the company handles them.
When to call
- A dark room, hallway or stairwell that needs daylight.
- An addition, garage conversion or finished basement that needs windows.
- A wall rebuilt after fire or water damage where a window could be added or enlarged.
What to expect
- PlanSize, location and style are chosen, the wall checked for wiring, plumbing and load, and permits pulled where required.
- FrameThe opening is cut and the header and studs installed with the wall supported.
- Set and flashSill pan, wrap and flashing go in, and the unit is shimmed, fastened and sealed.
- FinishExterior siding and trim are patched, the interior insulated, drywalled and cased, and you check the operation.
Get a certified company
Look up a certified company by ZIP code. Every company's license, insurance and trades are verified before it is listed, and placement is never paid.
Questions people ask
Can a window go in any wall?
Most walls can take one. Load-bearing walls need a sized header; walls with plumbing, ducts or wiring in the way need rerouting first. The company opens a small inspection hole before committing.
Will the new window match the others?
Matching the style, grille pattern and exterior color is standard. The installer orders the same series when the house has a current product, or the closest match.
Does a new window need a permit?
Often yes, especially in a load-bearing wall or a bedroom. The company checks the local requirement and pulls the permit when one is needed.
Related: Window replacement · Egress window installation · Siding repair · All siding, windows and doors
This page describes what the service involves. The company you hire sets the scope, the schedule and the price, and your contract is with that company. We verify credentials and collect reviews from real jobs. We do not guarantee any company's workmanship. Safety steps are general guidance. When in doubt, leave the home and call 911.