by spraying a thin protective film 132 over the window assembly 10 such that the protective film 132 covers and adheres to the outer surface 97 of the side jamb covers 86 the outer surface 112 of each of the sill covers and head jamb covers 88 the outer surface 127 of the cover 90 and the outer surface 20 of the window panes 13 the protective film 132 is preferably sprayed upon the outer surfaces 97 112 127 as described above by an automated system incorporated within a production line but may also be applied to the outer surfaces 97 112 127 by hand the protective film 132 is preferably constructed of water based polymer for example temprotec u2122 as available from tempro tec inc of canada however other suitable materials may be utilized alternatively the protective film 132 is applied via a roll on type method or is supplied in a roll sheet form which is applied to the assembly subsequent to the assembly of the window assembly 10 and the window protection assembly 11 the window assembly 10 is packaged for delivery to a building construction site where the window assembly 10 is placed into the building structure with the window protection assembly 11 still coupled with the window assembly.