How to clean uPVC window frames
To avoid any discolouration or damage caused through over-vigorous cleaning trying to shift stubborn stains a regular wash with warm soapy water will keep your white uPVC window frames in the best condition.
Use a soft brush or soft cloth to brush off any dust and loose dirt.
If you have a hose, rinse the windows with clean water to remove dirt.
Make a warm water soapy solution with a squirt of washing-up liquid or a dedicated liquid window cleaner in a bottle (not the spray type).
Use a soft cloth and the soap solution to wash down the frames and windowpane.
DO NOT use a scouring pad, wire wool or sponge with a scouring surface.
If you have a hose, rinse again with clean water.
The secret to getting crystal clear windows is to use a quality squeegee with a soft blade (like window cleaners do). Start at one side and either sweep from side-to-side to the bottom or start at one side and swipe from top to bottom and then use your fingers or a cloth to wipe excess water off the squeegee before the next swipe.
To get a real sparkle finish you can use a specific window cleaning spray with a soft cloth and then rub down with kitchen roll or old newspaper. But DON'T spray this on the frames.
You can also use vinegar – it's a magic ingredient for cleaning in the home.
Mix ½ cups of vinegar with 2 cups of water and a few drops of washing-up liquid.
Use a soft cloth to apply to the windows and then use old newspaper to rub in a circular motion to dry to a sparkly finish.