Abstract: A paint masking kit for windows and a method of masking windows prior to painting. The paint masking kit for windows includes a container having a plurality of reusable window balance covers having predetermined sizes and shapes for covering a header and balance portions of a window and a predetermined amount of a plastic sheet material for covering the glass portions of the window. The method of paint masking a window, having an upper and lower sash portion, a header and balances, includes raising the lower sash portion to expose the lower half of the balances. The reusable window balance covers are then secured to the exposed lower balance portions, and the lower sash portion is lowered over the window balance covers. Next, the upper sash portion is lowered to expose the header and the upper half of the balances. Reusable window balance covers are secured to the exposed header and balance portions, and the upper sash portion is raised over the window balance covers.