Things You'll Need
Hand-held vacuum cleaner and crevice tool
Bucket of water
Casement windows are easier to clean than many other windows. They can be opened and cleaned from the inside of a house, so you don't have to stand on a ladder to reach them. Casement windows are hinged on one side and swing out when you turn a crank. Most windows need cleaning twice a year, but because casements are so easy to clean, this should be no problem for you.
Rotate the screen clips up and remove the screen.
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Unlock the window. Lift up the lock handle and wind the crank until the window is in the open position.
Clean the track of the sash with a small paintbrush by sweeping away dust and debris.
Vacuum any remaining dust and dirt with the crevice tool of your vacuum cleaner. Mix a bucket of water with just a few drops of dish detergent.
Dip the sponge mop in the bucket to saturate it and scrub the outside and inside of the glass to remove dirt and grime. Reach up under, or around outside edge of the window to wash the outside of the glass. You may need to use both hands to hold the mop against the outside of the window,
Wipe both sides of the glass with the squeegee, reaching from under, or around the outside edge of the window to reach the outside of the window. Pull the squeegee over the glass pushing against it firmly to squeeze away soap and water. You may need to do this a few times.
Use the rag to wipe off the squeegee and repeat the wiping of the window to remove all drops of water.
Dry the windowsill with another dry rag.