Window Replacement Process: What to Expect

The exact workflow varies by product and installation method, but replacement projects generally move through scope definition, measurement, product selection, installation preparation, removal, setting and sealing, finish work, and final operation checks.

1. Scope and measurement

The installer identifies the opening type, frame condition, access, desired product, and whether the project is retrofit or full-frame.

2. Product selection and ordering

Window style, frame material, glass package, color and performance ratings are confirmed before custom-sized units are ordered where applicable.

3. Installation day

Work typically includes protecting nearby finishes, removing the required parts of the old assembly, preparing the opening, setting and fastening the new unit, sealing, and addressing trim or finish details in scope.

4. Final checks

Each operable unit should open, close and lock properly. Sealant, drainage features, finish work and cleanup should be reviewed.