Window Replacement in Denver

Step one: the walkthrough and measure

An installer comes to the house, opens and closes each window, and looks at the frame from both sides. They are checking for rot at the sill, failed flashing above the head, out-of-square openings that settled, and whether the existing frame is sound enough to accept a pocket insert.

Measurements are taken at three points across the width and three down the height of every opening, because almost no Denver house from before 1990 is perfectly square. The smallest of the three is what gets ordered.

Step two: permits and approvals

Most Front Range jurisdictions require a permit for window replacement, and always when an opening is enlarged or cut in for egress. Denver, Jefferson County, Arapahoe County, Douglas County, and individual city building departments each run their own process and their own timelines.

If your block sits in a Denver landmark district, grid pattern, frame material, and sightline width can go to review before anything is ordered. HOA architectural committees in the southern suburbs add their own step. Both are confirmed before you sign, not after.

Step three: the order wait

Manufactured-to-size units typically take several weeks to arrive. That wait is normal and it is when most of the schedule lives. Anyone promising next-week installation on custom sizes is either holding stock sizes or has not ordered yet.

Step four: install day

A crew replaces roughly eight to twelve standard openings in a day. Each opening is out and back in within the same work session, so the house is never left open overnight. Stucco, brick, and full-frame work slow that pace down, and bay assemblies or egress cut-ins are usually their own day.

Interior floors and furniture get covered. Old units, glass, and packaging leave with the crew.

Step five: the walkthrough that matters

Before the crew leaves, every sash gets opened and closed, locks get tested, and the interior and exterior seals get looked at together with you. Labour and manufacturer warranty paperwork should be handed over in writing, not promised by email later.