What remains
Insert replacement retains the old frame and places a new unit inside it. Full-frame replacement removes the existing frame to expose the rough opening.
Condition and water
An insert depends on a sound, dry and compatible retained frame. Full-frame work provides access to substrate and flashing when damage or water history requires it.
Glass area and finish work
An insert may reduce visible glass but usually disturbs less trim. Full-frame replacement can recover opening area while adding exterior and interior finish scope.
Budget the complete job
Compare product, removal, repairs, flashing, trim, paint, access, disposal and long-term outcome—not unit price alone.
Turn the guide into a real opening schedule.
Keep every dimension, option, pressure, document, and delivery note connected to the same opening ID.
Start the configurationQuestions about this topic
Which method should I choose?
Choose from the retained frame condition, water management, wall construction, dimensions, finishes, glass-area goals and budget after inspecting the opening.