Method for Bulk Painting of Window Panes

Have you ever tried to paint exterior window panes? It is awful.

Currently, professional painters hang on a ladder, dip just the right amount of paint on to their brush. Then they carefully eye the boundary between the brush and the glass, slowly drawing the bead of paint over the pane.

Good painters can finish a 12 pane window in about 35 minutes. Windows are probably the only section of the house which can't be sprayed, because painters would rather not scrape the paint off of the glass, because it takes forever. Taping is also for amateurs and also takes for ever.

Here goes. At night turn off all of your lights. Then spray all of your windows with photoemulsive liquid, like the kind used in screen printing. After this is done, turn on the lights in your house. After 30 minutes or so, the photoemulsion should harden only where light hits it (the glass).

Go back outside and hose the unhardened emulsion from your windows. You should now have exposed mullions and hardened photoemulsion covering the glass.

You can now spray paint all of your window mullions without getting any paint on the glass, but getting it all on the exposed mullions.

When you are done painting and it has dried, then use deemulsifier to remove the emulsion from the glass.

Hopefully, This will leave beautifully painted window panes with none on the glass.

You should try it... I won't.