Key Takeaways
- Replacing one standard window takes 30 minutes to 2 hours, depending on the method.
- Curtain wall windows and window walls can take several days or weeks due to complexity.
- Your total project may take 1 day to 3 weeks, based on size and window type.
- Factors like weather, materials, and structural needs can delay your timeline.
- Working with Euroline Steel Windows and Doors helps you stay on schedule and get the quality your home deserves.
If you’ve been planning a home improvement project, window replacement might be on your list. But once you’re ready to start, one question comes up quickly: How long will this take?
The short answer: it depends.
From standard casement windows to full curtain wall systems, each window type has a different schedule. Some projects take a day. Others, especially those involving large openings or structural work, can take weeks.
This blog gives you a clear timeline based on window types, materials, and what to expect from start to finish—including prep, window installation, and finishing touches.
What Affects the Window Replacement Timeline?
Several things can change how long a window replacement takes:
- Type of window
- Installation type (insert vs. full-frame)
- Size of the window
- Window frame material
- Structural needs or trim work
- Number of windows being replaced
- Weather conditions
- Installer availability and skill
In general, replacing one standard window takes about 30 minutes to 2 hours. But more complex systems like steel curtain wall windows or GLASSvent® windows take longer due to design and sealing requirements.
Installation Types: Insert vs. Full-Frame
Before we get into window types, it’s good to know the difference in installation styles:
Insert Installation
The new window fits into the existing frame. It’s faster and less invasive. Each window usually takes 30 minutes to 1 hour.
Full-Frame Installation
The old frame is removed and replaced. This allows better sealing and energy upgrades but takes longer, 2 to 4 hours per window or more.
For steel windows or high-performance upgrades, full-frame installs are common. It helps maintain thermal performance and protects the building envelope.
Timeline by Window Type
1. Steel Casement Windows
Time: 1.5 to 3 hours each
Known for durability and style, steel casement windows take a bit more time to install due to their weight and hardware styles like crank handles or folding handles. Custom sizing or thermal break features can also add time.
When choosing Euroline Steel Windows and Doors, each custom window is made with precision and installed with careful alignment for thermal efficiency.
2. Awnings and Window Hoppers
Time: 45 minutes to 1.5 hours each
Smaller and often used in bathrooms, basements, or above other windows, awning windows and hopper windows are quicker to install. If your home has steel awning windows, allow a bit more time for sealing and support due to the added weight.
For multi-unit homes or grouped openings, expect a longer project, especially when upgrading older storm windows.
3. Curtain Wall Windows
Time: Several days to weeks
Curtain wall systems are major installations. These are not single windows—they’re entire sections of glass that cover walls. These projects often include:
- Structural prep and sealing
- Reinforcing the building structure
- Mounting large glass curtain wall panels
- Connecting to the building envelope
Installers must also follow strict building codes and seismic or wind load rules. A full TH-1450 Window Wall or unitized curtain wall system might take 1 to 3 weeks, depending on size and structure.
4. Picture Windows and Fixed Panels
Time: 1 to 2 hours each
These don’t open, so they’re easier to install. But they can be large. A picture window in a living room, or a fixed panel as part of a window wall system, may take more time just to lift and align.
5. Window Walls
Time: 2 to 5 days
Window walls are different from curtain walls—they support themselves rather than attaching to a full building frame. They often include multiple panels, insulated glass, and detailed glazing bead work.
Expect a longer timeline for custom materials like Low-E Glass or decorative glass, and special requirements like blast loads or building sway protection.
Total Project Timeline
If you’re replacing 10 to 15 standard windows in a home:
- Insert installation: 1 to 2 days
- Full-frame installation: 2 to 4 days
Larger projects, like custom window walls or curtain wall jobs, may take 1 to 3 weeks, especially if paired with new French doors or structural upgrades.
Projects through Euroline Steel Windows and Doors come with detailed timelines. Each phase—from design to delivery to install—is handled with care to meet the schedule while delivering high-quality, long-lasting products.
What Can Delay a Project?
Delays happen, even with good planning. Watch for:
- Weather conditions: Rain or wind can stop outdoor installs.
- Custom windows: Extra time is needed for fabrication and delivery.
- Trim work or window treatments: Matching finishes may extend the job.
- Hidden damage: Rot, mold, or structural issues discovered during the removal phase may need to be fixed before new windows go in.
Your window company should communicate all these factors ahead of time.
How to Speed Things Up
Want to keep your project moving? Here’s how to help:
- Be clear about your window types and needs during your first consultation.
- Finalize your window series, materials, and glazing options early.
- Prepare the space before installers arrive (clear furniture, remove curtains).
- Choose a reliable window installer with experience in steel windows and custom systems.
Working with pros like Euroline Steel Windows and Doors means fewer surprises, steady timelines, and unmatched results. We specialize in high-end custom window families, including H3 casement windows, vent sash options, and systems built for performance and design flexibility.
After Installation: Final Steps
Once your new windows are in, most installers will:
- Clean the work area
- Test the window function
- Explain how to maintain thermal efficiency
- Provide warranty and documentation
Keep an eye on seals and performance after your project wraps. Even energy-efficient glass needs basic upkeep to last decades.
Need a custom timeline estimate for your own window project? We can help map it out based on your exact design and window selections.
