If they are they dirty or contain a collection of spider webs then the windows will need to be cleaned before you paint the window trim.
Painting exterior windows advice.
If possible remove the sash from the frame.
Lap paint slightly onto the glass as you paint window muntins and sash.
If you have suspicions that lead paint was used on your home pre 1978 buy an inexpensive testing kit at a hardware store.
Window painting can take several hours depending on the preparation.
Dust the windows when you are done sanding.
Despite the small surface area that needs to be painted it can take you about 50 percent of the time you would need to paint your entire house depending on the type of windows you have and their condition.
Paint onto the glass.
Sand the scraped window surface.
Exterior window painting tips begin your project as early in the day as possible.
Be wary about lead paint layers in older homes.
Sanding the surface of the existing paint will also help the new primer and paint adhere better.
This will make the job of window painting easier.
You want to create a very smooth transition between the remaining paint on the window trim and the areas that were scraped down to bare wood.
Prime any bare wood.
Complete the exterior house painting job by smoothing the paint in the center of the panel with long sweeping strokes keeping well away from the completed edge.
If it tests positive follow all safety precautions to avoid inhaling it letting the dust get in your eyes on your skin or letting paint flakes gather in your soil.
Then paint the horizontal pieces followed by the vertical pieces.
Use a 1 1 2 in.
Following this pattern will give you a nice neat.