Question

what stains should observed in painted doors and windows what material required and what are the methods of cleaning​

Answer 1

To clean a stubborn stain, mix a paste of baking soda and water and rub over the stain. Rinse with clean water and a cloth. Start at the top of the wall when cleaning, and work your way down. Wipe the wall with the cleaner and then wipe it with just water to rinse.

Even if your door is not too dirty, give it a cleaning with soap and water, and then rinse with clean water to remove any soap residue. If you are going to be painting over an oil-based paint with latex, you must first sand* it lightly and prime it with a good gripping primer.

Start with a 1-gallon bucket filled with warm water:

1. Pour in an ounce of dish soap for a mild cleaner that will remove dirt and grim from interior painted doors and most exterior ones. ...
2. Use ammonia as an alternative to dish soap. ...
3. Mix 1/4 cup of trisodium phosphate for extreme cleaning power.

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