How Long Does It Take to Replace a Window?

If you’re planning a home upgrade, one of your first questions is likely: how long does it take to replace a window? At Builders Service Company, we understand the importance of timelines, especially when weather or interior renovations are at play. Let’s break it all down for you—from what affects the time frame to what you can expect on installation day and beyond.

What Impacts Window Replacement Time?

Several elements influence how quickly your window replacement can be completed.

Type and Size of the Window

The type and size of a window play a major role in determining the time it takes to install. A standard double-hung or single-hung window takes less time than larger, more complex units like bay or bow windows. Custom-shaped or oversized windows require additional adjustments and often need more structural work during installation.

Condition of the Existing Frame and Surrounding Materials

Older homes may have water damage, wood rot, or warped frames that require repair before new windows can be installed. Replacing damaged structural elements can add hours or even days to the overall timeline.

Number of Windows Being Replaced

Installing one window is relatively fast, but replacing all the windows in a home is a bigger commitment. Still, with an experienced crew, multiple windows can be replaced efficiently in a short period.

Interior and Exterior Accessibility

Accessibility to windows affects both speed and ease of replacement. For example, windows on upper stories or those blocked by landscaping take longer due to equipment setup and limited mobility.

Weather and Seasonal Considerations

Extreme temperatures, rain, or snow can delay installation or make working conditions unsafe. Dry, mild weather is ideal for smooth and efficient window replacement.

Average Time to Replace One Window

On average, replacing a single standard-sized window takes about an hour, provided the existing frame is in good condition. Larger or more intricate windows can take significantly longer.

If you’re wondering how long does it take to replace a window in an average-sized room, it’s often completed in less than a few hours. The exact timing may vary, but the entire installation process remains smooth with proper planning.

Window Type	Difficulty Level	Estimated Installation Time
Single-Hung	Easy	1–2 hours
Double-Hung	Easy to Moderate	2–3 hours
Casement	Moderate	3–4 hours
Awning	Moderate	3–4 hours
Picture	Easy	1–2 hours
Bay or Bow	Complex	6–10 hours

How Many Windows Can Be Installed Per Day?

With a two-person installation team, around 8 to 10 standard windows can typically be replaced per day. This figure varies depending on several factors.

If you’re calculating how long does it take to replace a window across an entire home, remember this pace can help you estimate the total project time.

Factors That Affect Installation Speed:

• Window size and complexity
• Existing frame condition
• Ease of access to each window
• Unforeseen issues like water damage or structural repair needs
• Installation method (insert vs. full-frame)

Breakdown of the Window Replacement Process

Understanding each phase helps homeowners manage expectations and timelines.

Measuring and Initial Consultation

This is the first step in the process. A technician visits your home, evaluates the windows and doors, takes precise measurements, and helps select styles and features based on your preferences and needs.

Placing the Order

Once decisions are made, the order is placed. This includes the chosen frame material, glass type, style, and any other customizations. Be sure to confirm window and door types during this step.

Window Manufacturing Lead Time

Standard windows usually take 4–6 weeks to manufacture. Custom windows may require 6–12 weeks or more, depending on complexity and manufacturer availability. Door replacements can sometimes follow a similar schedule.

Delivery and Storage Prep

Windows are either delivered to the contractor’s warehouse or directly to your home. If early delivery is necessary, a safe and dry storage area is needed to avoid exposure to elements. For larger patio doors, clear access areas for delivery.

Installation Scheduling

Once the windows arrive, a date is scheduled for the installation. Schedules often depend on weather forecasts and crew availability. Lead times should be checked again at this stage.

Step-by-Step Installation Process:

• Removing old windows and doors: Careful removal to avoid damaging the structure.
• Preparing the Opening: Inspecting and repairing framing, adding insulation, or addressing any wood rot.
• Installing the New Window or Door: Fitting, aligning, and securing it in place.
• Sealing and Insulating: Using foam and sealant to secure energy performance.
• Final Finishing: Includes trim installation, caulking, and area cleanup.

Many homeowners ask how long does it take to replace a window when planning for multiple rooms. With a clear breakdown like this, you’ll know exactly what to expect.

Timeline from Start to Finish

From your first call to the final cleanup, here’s a look at average project durations:

• Standard replacement projects: 4–6 weeks
• Custom or complex window jobs: 6–12 weeks

2024–2025 Industry Updates

Lead times have improved significantly compared to pandemic-era delays. While backlogs still exist in some categories, most standard windows and patio doors arrive within 4 to 8 weeks after ordering. Timelines now reflect better supply chain management.

When clients ask how long does it take to replace a window in today’s market, we assure them that turnaround has improved and most standard jobs are completed promptly.

Full Home Window Replacement Timeframe

If your project involves replacing every window in your home, here’s what to expect:

• Small homes (under 15 windows): 1–2 days
• Medium to large homes (15–30+ windows): 3–5 days

The time frame may vary based on crew size, window type, accessibility, and area logistics. Consider the time it takes for each window installation when calculating the total time frame.

Interior vs. Exterior Access: What You Should Know

In most cases, installers work from the outside. However, they need interior access for parts of the window and door installation process:

• Final sealing and insulation
• Adjusting locks and handles
• Ensuring smooth operation from inside

Special window types like offset or basement windows may require more inside access. For patio door replacements, expect both indoor and outdoor work.

Some homeowners worry how long does it take to replace a window with interior access requirements, but it rarely extends beyond the standard timeframe.

Is Window Installation Messy or Disruptive?

While window replacement is a construction activity, professionals take steps to minimize disruption:

• Drop cloths and protective coverings are used
• Dust and debris are cleaned at the end of the day
• Noise is kept to working hours, and disruption is minimal with good planning

Expect some sound and dust, but it’s manageable with a professional team.

How to Prepare Your Home for Window Replacement

Homeowners can help streamline the process with a few simple preparations:

• Clear furniture and fragile items near windows and doors
• Remove curtains, blinds, or wall-mounted décor
• Provide unobstructed access to windows, indoors and outdoors
• Ensure pets are secured in a separate room during installation

Designating a clear path around the installation area helps minimize delays. Having this in place can reduce how long does it take to replace a window in each room.

Can Replacing a Window Damage Surrounding Walls or Trim?

Most modern window installations are done with minimal disruption. Still, certain issues can lead to minor repairs:

• Cracked drywall or damaged trim may need patching
• Structural frame repair is sometimes necessary in older homes

Builders Service Company inspects every opening before installing new windows and doors and addresses minor issues as part of the service. Damage around window frames may require additional time during the process.

Weather and Other Factors That Can Delay Installation

Delays are rare, but they can happen. Common causes include:

• Rain, snow, or wind making outdoor work unsafe
• Supply chain issues for specific custom orders
• Unforeseen on-site complications like insect damage or hidden rot

Flexibility and proper planning help reduce installation time affected by weather.

If you’re wondering how long does it take to replace a window in rainy season, it’s wise to schedule during dry weather for a smoother experience.

Signs That May Extend Installation Time

During replacement, certain discoveries can increase project time:

• Moisture damage around the window frame
• Settled or out-of-square wall openings
• Non-compliant framing or outdated structures

If windows or doors need extra work to be brought up to code, expect installation time to be longer. Knowing this in advance allows you to prepare accordingly.

How to Inspect Windows After Installation

Homeowners should do a final walkthrough with the crew to ensure everything is in order:

• Confirm smooth window and door operation (open, close, lock)
• Check for visible scratches or alignment issues
• Verify sealing and caulking is clean and complete
• Review the area for any damage or debris

Windows and doors should be inspected from both interior and exterior to confirm quality.

Many homeowners feel reassured when they understand how long does it take to replace a window and what checks are involved post-installation.

Why Choosing the Right Contractor Matters

The right contractor makes all the difference. With skilled installers:

• Projects stay on schedule
• Installations meet all codes and standards
• The home remains clean and damage-free

At Builders Service Company, our work speaks for itself. We’ve been delivering exceptional home improvement services—including window replacement, roofing, decking, and siding—across Washington since 1974. Our team is trained, licensed, and experienced in handling every type of window, patio door, and home style with care.

Contact Builders Service Company for Professional Window Replacement

Ready to enhance your home with energy-efficient, high-quality windows? Trust the pros at Builders Service Company for a seamless, on-time replacement process. Whether you’re replacing one window or upgrading your entire home, we bring expertise, transparency, and craftsmanship to every job.

We’re more than just a window installer—we’re your local home improvement partner. Our goal is to make your window replacement smooth, efficient, and long-lasting. No guesswork. No delays. Just professional work, done right.

Siding Contractors Washington | Windows, Roofing, Home Remodel Contractors Upgrade your home with Builders Service Company—serving Washington homeowners with expert window, roofing, siding, and decking services since 1974. Whether you need one window replaced or a full exterior makeover, we’re here to help.

Call 888-980-8580 today to schedule a consultation with a trusted contractor.