Andersen® 100 Series casement and awning windows can use three (3) styles of weatherstripping on the window sash (the glass and framing around the glass): primary, leaf, and top rail bulb weatherstrips.
Install Window Sash Weatherstripping on Andersen® 100 Series Casement or Awning Window
This article provides resources for ordering replacement weatherstripping for an Andersen® 100 Series casement or awning window.
Safety Warning
Tools and Supplies Needed
- One (1) soft cleaning cloth
- Mild soapy water
- Safety glasses
- Needle-nose pliers
Let's Get Started
1. Order Parts
All three (3) styles of 100 Series weatherstripping 
are available online from the Andersen Parts Store and can be used on either a 100 Series casement or awning window.
| Primary Weatherstrip: One piece that covers the entire perimeter of the window sash. |
Primary Weatherstrip (Located on Perimeter of Sash)
|
Leaf Weatherstrip: Two (2) pieces located on the sides of the window sash that are closest to the outside of the home.
|
Leaf Weatherstrip (Located on Sides of Sash)
|
Top Rail Bulb Weatherstrip: One (1) piece located at the top of the window sash and is closest to the inside of the home.
|
Top Rail Bulb Weatherstrip (Located on Top of Sash)
|
2. Install Parts
These instructions apply to all three weatherstripping styles.
- Using needle-nose pliers (if needed), pull the existing weatherstripping out of the window sash's channels.
- Remove any dirt or debris from the location of the existing weatherstripping by cleaning the area with mild soapy water and a soft cleaning cloth.
- Insert the new weatherstripping into the channel where the existing weatherstripping was located and press it into place.
Note:
- The primary weatherstrip is one piece. Be careful not to pull the weatherstrip too tight around the corners.
- There should be no gaps where the ends of the weatherstrip meet. This intersection should be at the upper part of the window sash sides, not the top or bottom of the window sash.
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