Remove the window and frame from its enclosure. Different style windows use sill latches or pulley systems, so removal methods may vary.
Scrape and clean off glue or mastic materials from the aluminum frame and from the top of the window enclosure. Use VC thinner or acetone in hard to clean areas.
Pull off the old rubber seal with a pair of needle-nose pliers. Scrape off any remaining rubber and glue materials from the aluminum frame and cabin using a razor blade.
Draw a pencil line across the cabin top to mark where the frame fits for when it comes time to reinstall the frame.
Lay the butyl rubber seal across the backside of the aluminum frame. The seal should span across the top, sides and bottom of the frame so the two ends form a tight, snug fit at the bottom.
Avoid stretching out the rubber seal in the process.
Reinstall the window.
Things You Will Need
- Needle-nose pliers
- Razor blade
- Butyl rubber seal
- Make sure no bends or dents exist on the aluminum frame, as these will cause air leaks to form again.