Hidden window screen for sash window

A rolling screen assembly in combination with a sash window having an upper frame member and a lower frame member, the assembly comprising:

• at least one rolled-up screen;
• a plurality of clips for attaching said at least one rolled-up screen to the upper frame member or the lower frame member of the sash window;
• a snap-on housing disposed around each rolled-up screen, wherein said snap-on housing is adapted to snap onto the frame member to which said rolled-up screen is attached, and wherein said snap-on housing comprises an upper edge portion;
• a series of bristles disposed on said upper edge of said snap-on housing for cleaning said rolled-up screen during operation;
• a series of bristles disposed on the frame member to which said rolled-up screen is attached, wherein said series of bristles disposed on the frame member and said series of bristles disposed on said edge of said snap-on housing achieve a dual sided sweep of said rolled-up screen during operation of said rolled-up screen;
• and
• a weep system disposed in the lower frame member for allowing excess water to be expelled, wherein said weep system is spaced apart from said rolled-up screen ensuring that water in said weep system never reaches said rolled-up screen;
• wherein when an upper or lower sash of the sash window is in an open position, said at least one rolled-up screen is extended.