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Window Installation Instructions

Learn how to install a window in a variety of applications, including replacement windows or new construction windows. Select your installation type below to learn more.

New Installation Innovation

Up to 64% of the Installation Can Happen from the Interior with the Pella® Steady Set™ Interior Installation System47

The industry-leading system features easy-to-learn components to help ensure a high-quality, consistent fit and finish every time.

Get an Inside Look
illustration of new construction for windows

New Construction

Installing windows in a new building or when siding has been completely removed.

full frame window replacement

Full Frame Replacement

Installing windows after removing the existing frame and sashes.

pocket window illustration

Pocket Replacement

Installing windows and leaving the existing frame in place.

window hardware

Accessories & Assemblies

Installing hardware, decorative features, frames, trim and mullions.

Helpful Resources

  • Pella Contractor Program

    Pella Contractor Program

    Become a Pella Certified Contractor® and let us help bolster your business.

  • Support Center

    Support Center

    Contact us if you have questions about windows, patio doors or entry doors.

  • Installation Guides

    Installation Guides

    Find everything you need in one packet for your construction type.

  • Product Warranties

    Product Warranties

    Always read the Pella warranty before purchasing or installing a Pella® product.