If you’ve ever asked yourself “How long does it take to replace a window,” you’re not alone. It’s one of the most common questions homeowners have when planning a renovation or trying to update the look and energy efficiency of their homes.
Persson Construction Inc. has replaced windows in all kinds of homes—from modest bungalows to large estates. We know just how much the answer can vary depending on the type of window, the condition of your framing, and the scope of your project.
While replacing a single window might sound straightforward, there’s a bit more that goes into the process than meets the eye.
In this article, we’ll walk you through what really happens during a window replacement project, what to expect in terms of time, and how we help make the process smooth from start to finish.
The Typical Timeline: What to Expect
Generally, replacing one window takes between 30 minutes to an hour for experienced professionals. However, that’s just the installation part.
The entire process—from initial measurements to the final seal—involves several key steps. The overall timeline can vary based on how many windows are being replaced and whether you're choosing standard or custom options.
At Persson Construction Inc., we typically let clients know that a full-home window replacement (around 10–12 windows) generally requires two to three days of on-site work. However, planning and product ordering begin well before our team sets foot on your property.
Before Installation: The Preparation Phase
Before any tools come out or old windows are removed, we start with the planning and prep work. This phase includes an in-home consultation where we assess your current windows, measure accurately, and help you select the right replacement style and material.
Once selections are finalized, we place your order. Depending on what you choose, a standard window or something custom, this can take anywhere from a few days to several weeks.
Vinyl windows often arrive quicker than wood or fiberglass options, and custom shapes or grid patterns may take longer. Once the windows arrive, we schedule an installation date that works for you.
Factors That Affect Replacement Time
Even though one window might only take an hour to replace, not all projects are created equal. One major factor is the type of installation. Retrofit, or insert, installations involve removing the sash of the old window but leaving the existing frame in place. This is quicker and less invasive.
Full-frame replacements, on the other hand, require the entire window—including frame and trim—to be taken out. While more time-consuming, this option is often necessary if your current frames are damaged or poorly insulated.
Accessibility also plays a role. Windows on upper floors or those in hard-to-reach areas take longer due to the need for ladders, scaffolding, or additional safety measures. The condition of your existing window frames can also impact timing.
If we find water damage, mold, or structural issues, repairs must be done before the new window goes in. Weather is another variable. Rain, snow, or extreme temperatures can cause delays or require extra steps to protect your home during the process.
What Happens During Installation Day?
On installation day, our team arrives fully prepared. We start by protecting the area inside and outside your home with drop cloths and removing any window treatments or obstacles. The old window is carefully removed to prevent damage to surrounding structures.
If we uncover any issues during the process, we address them right away. The new unit is carefully installed, leveled, and firmly secured. We add insulation and sealants to prevent drafts and moisture from entering.
After the installation is complete, we apply any required trim and thoroughly clean the work area. Finally, we perform a detailed walkthrough to confirm that the project meets both our quality standards and your expectations.
Replacing multiple windows in a home typically follows an efficient workflow. Our team coordinates the process so that no area of your home is left open for too long. If you're doing a full-home replacement, we organize the job in phases to minimize disruption and maximize speed.
Manufacturing Time: Why Your Window Might Not Be Ready Tomorrow
Although installation itself might only take a few hours, one of the biggest delays can come from manufacturing. Standard-size windows may ship quickly. However, custom orders take longer.
The material you choose can also affect lead times. Aluminum and fiberglass windows often have different availability compared to vinyl or wood. Additionally, seasonal demand can create backlogs with manufacturers.
We keep our clients informed throughout this stage. Once your order is placed, we offer updates on expected delivery dates and help coordinate the installation schedule so that everything aligns smoothly.
Common Questions from Homeowners
Homeowners often ask if they need to be home during installation. While we can work independently, we recommend being available at the start and end of the process to confirm access and review the finished work.
Another common concern is cleanliness. Our team works with care, using dust control methods and cleaning thoroughly so your home looks as good after installation as it did before.
As for seasonal replacements, yes—we do install windows during winter. We work one window at a time to keep your home sealed and comfortable throughout the process.
Why Timing Matters
Fast work is appealing, but quality should never take a back seat. Poorly installed windows can lead to drafts, leaks, and higher energy bills. Persson Construction Inc. believes in balancing efficiency with attention to detail.
Our experience allows us to work quickly without cutting corners. This way, you get a result that performs well and looks great.
When You Should Replace Instead of Repair
Sometimes a window repair seems like the simpler choice. However, full replacement is often the smarter long-term decision. If your windows stick, let in drafts, have fog between the panes, or show signs of structural damage, replacement is likely the better option.
During our consultation, we assess your situation honestly. If a repair will work, we’ll say so. But if replacement makes more sense for comfort and efficiency, we’ll explain the reasons and help you move forward with confidence.
What Sets Us Apart
Persson Construction Inc. does more than just install windows. We help homeowners invest in comfort, performance, and peace of mind. Our process is tailored, efficient, and backed by years of experience.
We listen, plan carefully, and deliver results that match your home and lifestyle. From the first conversation to the final walkthrough, our goal is to leave you with windows you’ll love for years to come. In addition, we also deliver expert siding installation, roofing services, and exterior door replacement.
So, how long does it take to replace a window? The installation might only take an hour, but the full process can stretch over several weeks from consultation to completion.
What matters most is getting it done right. With the right team, the right product, and the right plan, replacing your windows can be one of the best upgrades you make to your home.
If you’re ready to explore your options or want to talk through the details of your own project, we’d love to hear from you. Reach out to Persson Construction Inc. today and let’s make your home more comfortable, efficient, and beautiful—one window at a time.
