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How to Replace Vinyl Windows

The steps for how to replace vinyl windows will explain how to update your home’s look. Vinyl windows have long been a popular choice for durability and style. You may want them if the windows on your home have suffered damage. They are also a great option if you simply desire a fresh style.

How to Replace Vinyl Windows Step by Step

  1. Before you tear anything out, you need to buy new windows that fit. Use a tape measure to find the width and height in inches.
  2. For the width, measure from jamb to jamb at the top, middle, and bottom.
  3. For the height, place the measuring tape on the sill where it connects to the window.
  4. Measure to the top of the window opening.
  5. Take three measurements on the left, middle, and right.
  6. Use the shortest measurements for the width and height.
  7. These dimensions prepare you to shop for new replacement vinyl windows. Off-the-shelf windows could work, or you may need to custom order new windows to fit perfectly.
  8. Once you have new windows on site, assemble the tools for how to replace vinyl windows.
  9. Carefully pry off the interior stops alongside the window trim. You can save these stops and reinstall them at the end of the job.
  10. If necessary to expose the structural framing around the old window, pry off trim.
  11. Set aside trim.
  12. You can now pry out the old window.
  13. After getting out the old window, scrape the frame clean of old paint and caulk.
  14. Working on the inside, lift the window into the frame for a dry fit.
  15. Place the bottom in first and then tilt the window fully into the frame.
  16. If the window fits well, take it down and set it aside.
  17. Using paintable, exterior-grade caulk, apply a bead of caulking around the frame where the window will touch.
  18. Lift the window back into the frame.
  19. Grab a level and set it across the window.
  20. If the window is not level in the frame, insert shims to adjust its position.
  21. Once you have the window level, insert shims behind the holes for the screws.
  22. Drive the installation screws that came with the window through the holes into the shims and frame.
  23. Trim off any shims that are sticking out of the edges.
  24. Fill any gaps that you see between the window and frame with expanding insulation foam.
  25. Reinstall the window stops and trim.

Tools & Materials

  • Measuring tape
  • Small pry bar
  • Putty knife
  • Caulking gun
  • Level
  • Utility knife
  • Power drill
  • Paintable, exterior-grade caulk
  • Shims
  • Expanding foam insulation

Professional Window Replacement Is Always Recommended

If you discover that the boards of a window frame have rotted, then you need to remedy that. A new window installed in a rotted frame will only cause problems. The professional window installers at PJ Fitzpatrick can rebuild a rotted frame for successful vinyl window replacement. Our home repair company offers a great selection of replacement vinyl windows. Contact us today to learn more.

Need help with this project?

We have trained professionals that can help. Contact us today. 1-877-246-4354

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