How Long Does It Take to Replace a Window? What Homeowners Should Expect

One of the most common questions we hear at Windows on Washington is:
“How long does it actually take to replace a window?”

Whether you're replacing one window or your entire home’s worth, it’s natural to want a clear picture of the timeline. Good news — with the right crew and process, it’s often quicker and smoother than you think.

Here’s a breakdown of what to expect, from prep to clean-up — and everything that might affect your schedule.

⏱️ Average Time to Replace a Window

For a standard replacement, it typically takes 30 to 60 minutes per window once installation begins.

That means:

• A single window can be replaced in under an hour.

• A whole-home project (10–15 windows) generally takes 1 to 2 days for most homeowners.

Of course, that's assuming your installer is experienced, your products are pre-ordered, and no surprises come up during the job.

🔍 What Factors Can Affect the Timeline?

Not every window project is the same. Here’s what might speed things up — or slow them down:

1. Number of Windows

More windows = more time. But with a skilled crew, multiple installers work in parallel to keep the project moving.

2. Window Type

• Double-hung and sliders are usually quicker to install.

• Bay, bow, or custom-shaped windows require more time and precision.

• Patio doors and large units can take several hours each.

3. Condition of Existing Windows

If your current windows are warped, rotted, or unusually sized, extra prep or framing adjustments may be needed.

4. Exterior Conditions

Brick, stucco, or tight landscaping can add time compared to vinyl or wood siding.

5. Weather

Our crews can't install in heavy rain, high winds, or extreme cold. We'll always reschedule if conditions aren’t safe or optimal for quality work.

6. Installation Quality

Rushed installs often lead to poor performance. At WoW, we follow a proven 12-step installation process to ensure everything is sealed, aligned, and built to last.

🛠️ What’s the Full Installation Day Like?

Here’s a quick walkthrough of a typical install day with Windows on Washington:

1. Arrival & Prep (8–10 AM): Our crew leader walks through the plan and sets up the work area.

2. Removal: Old windows are carefully removed without damaging your walls or trim.

3. Installation: New windows are installed with precision — foam insulation, caulking, flashing tape, and all.

4. Interior/Exterior Trim: We finish off your windows with the trim style you selected.

5. Final Walkthrough & Cleanup: No nails, dust, or debris left behind. We inspect each window with you.

Most homeowners are amazed at how clean and efficient the process is.

🧠 How to Prepare for Install Day

To keep things running smoothly:

• Clear 3 feet of space around each window.

• Take down blinds, curtains, or wall decor near window areas.

• Move furniture or valuables away from work zones.

Our team handles the rest — including full cleanup and disposal of your old windows.

🧩 The Bottom Line

Most standard windows can be replaced in under an hour. A full-home replacement? Just a day or two. But quality matters more than speed.

At Windows on Washington, we take the time to do it right — because a well-installed window means years of comfort, lower energy bills, and peace of mind.

Want a personalized timeline for your project?
Schedule a free consultation with our experts — no pressure, just answers.