How to Install Vinyl Windows

October 10, 2010

Do-it-yourself homeowners can save a substantial amount of money installing their own vinyl windows rather than relying on a professional contractor. Vinyl windows eliminate the time and effort to paint after installation, as well as offer a wide choice of styles and energy efficiency ratings.

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Here is a quick overview of how to install vinyl windows:

Installing Vinyl Windows in 10 Steps

  1. Measure the new vinyl window at top and bottom for the width, and at both sides for the height.
  2. Gently remove the old window, the trim, and the upper and lower stops.
  3. The new window should fit snugly with a ¼-inch gap on all the sizes to allow for adjustment.
  4. Install the vinyl window from the outside in. Maneuver it in place until the window's flashing is flush to the window frame.
  5. Then nail flashing around the outside of the window.
  6. Once the vinyl window is secure, make sure it is plumb and level. Shim where necessary to bring the window level, and nail or glue the shims into place.
  7. Secure the window in place using nails or screws. Avoid warping the frame by not over-tightening the screws.
  8. Pack insulation into the gaps between the window and frame to help prevent any air from escaping from around the vinyl window.
  9. Open and close the window make sure it works properly.
  10. Caulk around the exterior gap between the new vinyl window and the window opening.

Installing vinyl windows can quickly add a new look to your home and provide years of enjoyment. By following these steps and the manufacturer's instructions, it should be easy to install new vinyl windows.


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