How long does it take to install windows and doors?

Jun 27, 2025

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How long does it take to install windows and doors?

As a seasoned supplier in the windows and doors industry, I often get asked by customers about the installation time for different types of windows and doors. The duration of installation can vary significantly depending on several factors, including the type of product, the complexity of the installation, and the size of the project. In this blog post, I'll break down these factors and give you a better understanding of how long you can expect your window and door installation to take.

Operable Casement WindowAluminium Floor Spring Door 2

Factors Affecting Installation Time

Type of Windows and Doors

The type of windows and doors you choose plays a crucial role in determining the installation time. For instance, a simple single-hung window might take less time to install compared to a custom-designed bay window.

  • Single-Hung Windows: These are relatively straightforward to install. They typically have a lower sash that slides up and a fixed upper sash. On average, a single single-hung window installation can take about 1 to 2 hours per window. This includes removing the old window, preparing the opening, and installing the new window.
  • Operable Casement Window: Casement windows are hinged on the side and open outward like a door. The installation process is a bit more complex as it involves ensuring proper alignment for smooth operation. Installing an operable casement window can take around 2 to 3 hours per window, considering the additional steps for hinge installation and weatherstripping.
  • Bay Windows: Bay windows are a combination of multiple windows that project outward from the building's exterior. They require more precise measurements and structural support. Installing a bay window can take anywhere from 4 to 8 hours, depending on the size and number of windows involved.

When it comes to doors, the installation time also varies based on the type:

  • Interior Doors: Interior doors are usually easier to install. A standard interior door installation can be completed in about 1 to 1.5 hours per door. This includes fitting the door into the frame, installing hinges, and adding any necessary hardware.
  • Aluminium Floor Spring Door: Aluminium floor spring doors are commonly used in commercial settings. The installation of these doors is more involved as it requires precise leveling and adjustment of the floor spring mechanism. Installing an aluminium floor spring door can take around 3 to 5 hours, taking into account the installation of the floor spring, frame alignment, and weatherproofing.
  • 2 Sashes Aluminium Sliding Door: Aluminium sliding doors are popular for their modern look and functionality. Installing a 2 sashes aluminium sliding door typically takes about 2 to 3 hours. This includes setting up the track system, fitting the door panels, and ensuring smooth sliding operation.
Complexity of the Installation

The complexity of the installation can also add to the overall time. If the existing opening is not in good condition or needs to be modified, it will take longer to install the new windows or doors. For example, if there is water damage or rot around the window or door opening, the damaged area needs to be repaired before installation. This can add several hours to the installation process.

In addition, if the installation requires custom work, such as creating a unique shape or size of window or door, it will also increase the time. Custom installations often involve more precise measurements and fabrication, which can take additional time.

Size of the Project

The number of windows and doors being installed is another important factor. A small residential project with just a few windows and doors will naturally take less time compared to a large commercial project with dozens of units.

For a small residential project with 3 to 5 windows and 2 to 3 doors, the installation can usually be completed in 1 to 2 days. However, for a large commercial building with 50 or more windows and doors, the installation process can take several weeks, especially if there are multiple floors and different types of products involved.

Average Installation Times for Different Projects

Residential Projects
  • Small Apartment: In a small apartment with 4 to 6 windows and 2 to 3 interior doors, the installation can typically be completed in 1 to 2 days. This assumes that the openings are in good condition and there are no major complications.
  • Single-Family Home: For a single-family home with 10 to 15 windows and 5 to 7 doors (including exterior and interior doors), the installation can take 2 to 3 days. If there are any custom windows or doors or if the openings need significant repairs, the time may be extended.
Commercial Projects
  • Small Retail Store: A small retail store with 8 to 10 windows and 2 to 3 exterior doors can be installed in 2 to 3 days. However, if the store has a unique design or requires special security features, the time may increase.
  • Large Office Building: Installing windows and doors in a large office building can be a complex and time-consuming process. Depending on the size of the building, it can take anywhere from 2 to 4 weeks to complete the installation. This includes coordinating with other contractors, such as electricians and plumbers, who may need to work around the window and door installation.

Tips to Minimize Installation Time

  • Plan Ahead: Before starting the installation, make sure all the necessary materials and tools are on-site. This will prevent delays due to waiting for supplies.
  • Prepare the Area: Clear the area around the windows and doors to make it easier for the installers to work. Remove any furniture, decorations, or other obstacles that may get in the way.
  • Choose the Right Installers: Hire experienced and professional installers who are familiar with the type of windows and doors you are installing. They will be able to work more efficiently and minimize the chances of errors.
  • Communicate Clearly: Keep in touch with the installers and provide them with any necessary information or instructions. This will help ensure that the installation goes smoothly and on schedule.

Conclusion

The time it takes to install windows and doors can vary widely depending on several factors. By understanding these factors and planning ahead, you can get a better estimate of the installation time for your project. Whether you are a homeowner looking to upgrade your windows and doors or a commercial property owner in need of a large-scale installation, it's important to choose a reliable supplier and experienced installers to ensure a successful and timely project.

If you are interested in purchasing windows and doors for your project, I encourage you to contact us for a free consultation. Our team of experts can help you choose the right products and provide you with an accurate estimate of the installation time and cost. We look forward to working with you to enhance the beauty and functionality of your property.

References

  • Building Construction Handbook
  • Window and Door Installation Guide

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