Someone made a mistake and cut opening to large for size windshield at MFG of front cap and Newmar added the fiberglass strip to fill in the gap.
If there has not been any further leaks with the fix from 8 years ago it has stand up well.
Rubber gaskets for windshields do have to be replaced over time if they dry out or bonding cement dry's out.
If you have to have a windshield replaced because of a cracked windshield and window company does not mount correctly as Newmar would mount, than the window could drop out of rubber surrounding gasket, has happened to people.
2004
Brochure and
Owners Guide.