Your guide to window installation

We've helped 911 customers install windows in the past year.

Planning ahead

Things to know before you get started.
7 Steps to Window Installation
  1. 1. Measuring the old window

    Before buying a replacement, ensure you have accurate measurements of the existing window. A pro will ensure the window fits for efficient insulation and optimum energy savings.

  2. 2. Window frame inspection

    Before the installation, it is necessary to inspect your window. Your contractor will check for possible rot in the frames and ensure the frame is not out of square.

  3. 3. Removing the inside stops

    A professional makes sure the inside stop pieces are carefully removed if you need to reuse them. He or she will leave the outside stops in place to hold the new window during installation.

  4. 4. Removing the window sashes

    Because your new window fits the existing window frame, the contractor will only remove the sashes and leave the frame. Both the lower and upper sashes need to be removed.

  5. 5. Installing the new window

    A pro will apply a bead of silicone on the inside edge of stop and push the window into place and ensure it is correctly fitted and secure it to the jamb using its screws.

  6. 6. Adding insulation

    The contractor will check for gaps around the window frame and insulate the areas properly. Spray insulation is ideal for those hard-to-reach spots.

  7. 7. Adding trim molding

    Your contractor will add a frame around the window and attach the molding to the walls. If there is a gap between the window and the drywall, adding a jamb extension takes care of that.

Tips for success

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