The most commonly used window cleaning method by professionals is window panning. Rub the wet mop (which has detergent) on the window. Rub well to make sure all dirt has been removed. This is the time to remove any persistent marks with the scraper.
If you need to use the scraper, make sure to only move the blade forward, i.e. don't scratch backwards, as this could drag dirt, cement, etc. through the glass and cause scratches. That way, you can stay safe, but still, get the clean, bright windows that will make your house look great.
Cleaning exterior windows can also be dangerous for homeowners who don't have the proper equipment to reach second or third floor windows. My next page of free tips explains how to approach cleaning small windows: French colonial windows, with lead lights and lattices. Over time, hard water runoff from masonry or rain that falls through metal mosquito nets on windows leaves persistent mineral stains on glass that normal washing cannot erase. These useful tools make it easy to reach the top of the window and you can quickly clean the entire window instead of working in sections.
One thing you should also consider here is to have your gutters cleaned either by yourself or hire a professional gutter cleaning service like Gutter Cleaning Syracuse NY. The main function of gutters is to keep away water damage. So if you will not maintain it then once it rains the effort you clean the window will just be wasted.
If you're interested in having exterior windows that shine, it's a good idea to hire a professional window cleaning service. Ideally, windows should be washed twice a year, but it's a task most people don't look forward to. If the mosquito net on your window looks particularly dirty, take it out and wash it with warm, soapy water and a soft brush, then rinse and let it dry before replacing it. Here are two 3-step methods for getting stripeless windows at home: one for panoramic windows and one for multi-panel windows.
I offer the best window cleaning service for residential homes, block strata, shop windows and other small and medium rise commercial buildings. It's a good idea to let professional window cleaners with experience working at heights clean exterior windows.