Andersen® 200 Series gliding windows use check rail weatherstrip to ensure a weather-tight seal where the two (2) window sashes meet in the middle of the window frame.

How to Replace the Bulb Weatherstrip on an Andersen® 200 Series Gliding Window

If your window's check rail bulb weatherstrip is damaged, frayed, or loose, we recommend you replace it, which can be done in a few quick and easy steps!

Important: The instructions below should only be used when replacing the bulb portion of the check rail weatherstrip. Due to the strength of the adhesive used on check rail weatherstrip assembly, if the rigid portion of the vinyl weatherstrip is damaged, it is recommended to replace the entire stationary window sash.

Bulb Weatherstrip

This Article Will Help You:

• Replace your check rail bulb weatherstrip.

Safety Warning

Tools and Supplies Needed

• Safety glasses
• Utility knife
• Replacement check rail weatherstrip: White or Gray
  • The check rail weatherstrip is available in white or gray and can be cut to size. This weatherstrip is also used on casement and awning windows, and you'll receive two (2) pieces in your shipment.

Let's Get Started

Replace Your Check Rail Bulb Weatherstrip

When you open your gliding window, you will see the check rail weatherstrip assembly on the side of the stationary window sash, which is where the operating and stationary window sash meet when closed. The operating window sash is the windowpane that you can open and close, while the stationary sash is the window that doesn't move within the frame.

1. Remove the operating window sash by following step two (2) on Page 3 of this guide: Sash Replacement for Andersen® 200 Series Gliding Windows (0005338).
2. Look at the window sash still in the frame, and measure the height of the rigid, vinyl interlock weatherstrip.
3. Cut the replacement weatherstrip to that length.
4. Carefully cut the stationary window's bulb weatherstrip, or the hollow part of the weatherstrip, off of the rigid, vinyl interlock using a utility knife — be careful not to cut the vinyl.
5. Starting on one side, with the bulb in the upward position, snap the weatherstrip onto the rigid, vinyl interlock, and continue working the weatherstrip until it is secured on the interlock.
6. Reinstall the operating window sash reversing step two (2) on Page 3 of this guide: Sash Replacement for Andersen® 200 Series Gliding Windows (0005338).
7. Test the window's operation by opening and closing it. If the weatherstrip is catching during operation, trim the weatherstrip until the window smoothly opens and closes.
   • If you're struggling to lock the window, hold and push the operating window closed until your lock can latch the window shut.

For additional assistance, follow the instructions in the YouTube® video below.

Note: The video is for 200 Series double-hung windows. Keep in mind that while the instructions are similar, replacing the bulb weatherstrip on a gliding window will vary slightly, as outlined above.

If you need additional assistance, Contact Andersen® Windows and Doors.

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