What Do Professional Window Cleaners Use to Clean Windows?

Professional window cleaners use simple supplies to achieve streak-free windows, without resorting to complex chemicals or expensive solutions from cleaning supply stores.

Basic formula requires mixing filtered water and dish soap in equal measures, although many professionals add Jet Dry for enhanced streak-reduction and dirt-lifting power.

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Dish soap

Professional window cleaners rely on an easy cleaning solution made from warm water and soap for quick yet streak-free window washing. A basic recipe combines 3/4 cup clear ammonia or white vinegar, 1 gallon of water and two to four teaspoons of Dawn dishwashing liquid for an effective cleansing agent that can remove stubborn stains and mineral deposits. Add Jet Dry, which helps dissolve and suspend dirt quickly so it can be easily wiped away, for an extra powerful washing solution for any of your next jobs.

Fill your bucket with warm water (not hot, which causes too quickly-evaporating cleaning solutions to evaporate). Add detergent by either directly applying or spraying some onto the mop head; then dip your mop into your cleaning solution and start washing.

Avoiding streaks requires rinsing off soapy water between each pane with clean water – either via hose or bucket – before the sun sets, otherwise direct sunlight will dry it onto your windows before you can wipe it off, creating permanent streaks that can only be removed through hard scrubbing.

Once each pane has been rinsed with clean water and soap suds have been applied, a squeegee can be used to clear away the remaining soapy deposits and moisture. Starting at the top left (for right-handed individuals this would be top right), slide your squeegee in an S pattern down each window, ensuring at the end of every stroke to wipe down its blade with lint-free cloth (e.g. cloth diaper or linen napkin).

Weingard suggests using either a natural sponge or hog bristle brush to dry glass surfaces. You could also opt for a reusable microfiber cloth, which is highly absorbent yet washable multiple times without losing its lint-free properties.

Jet Dry

Window cleaners use special jet dry sprays to speed the drying time of freshly cleaned windows, helping them look their best while preventing streaks and keeping streaks at bay. This prevents streaks and keeps windows looking their best!

Step two of cleaning interior windows involves extracting any excess water that drips or runs down. Before proceeding with further steps such as rinsing and drying again, be sure that your window is completely dry first before proceeding further with cleaning. Use a microfiber rag or cloth to wipe down woodwork around window frames as well as edges.

If the window is particularly dirty, a scrub brush with a long handle may be used to scrub away hard-water deposits and stubborn dirt spots. Before use, however, be sure to soak the brush in water in order to avoid scratching its glass surface.

Professional window cleaners use chemicals and cleaners that best match the size and type of dirt on windows. Certain solutions are more adept at eliminating bird droppings, pollen, mildew or grease deposits on glass surfaces than others.

To make window cleaning simpler, a quality bucket is key. The Ettore Super Bucket is an ideal option, as its durable construction and precise dimensions fit all of the tools used by window cleaners. In order to achieve thick, rich coatings without over-application of cleaner, it’s recommended that window cleaners squirt their solution onto an applicator before dipping it back in their bucket; keeping a large lint-free rag nearby such as microfiber towel or old linen napkin available can make this task much simpler.


Professional window cleaners use pure water filtered through a system to filter out any natural minerals; this type of water is commonly known as deionised water and used with a water-fed pole with brush heads at either end to reach taller windows without leaving behind residue or spots, and is highly effective at dissolving grease off glass surfaces.

Water will either come directly from a bucket, the hose, or in some instances from a telescopic water-fed pole to make higher window cleaning easier. When used on windows for window washing purposes, it will be sprayed onto them using an adjustable spray gun and then scrubbed against with a brush to loosen any dirt before being rinsed with pure water for thorough results. Leaving anything else can leave marks or streaks on glass that require further work after it has dried out.

Once windows have been cleaned, squeegeeing is used to remove excess water from them. Aluminium-made squeegees with rubber blades for scratch-free glass surfaces should be used; once completed, leave to dry naturally before proceeding further with cleaning process.

If a window contains stubborn mineral stains that regular washing has failed to eliminate, Weingard may wet its panes and use fine 000 steel wool or Barkeeper’s Friend bar containing oxalic acid to superclean. Once dry, muntins and sill will be wiped with chamois cloth before being dried with paper toweling.

Whenever you want your glassware to look their best, use a mixture of filtered or distilled water mixed with dish soap and Jet Dry. For optimal results when wiping off the solution, we recommend using either microfiber cloths or paper towels that do not shred or leave behind lint behind.


Squeegeeing windows leaves windows looking shiny and clean without streaks or mess, unlike using paper towels or rags which tend to leave streaks behind. Learning how to use one takes some practice but is well worth your while – professional window cleaners often manage five or ten windows before needing to reload their bucket with soapy water again!

Cleaning windows with a squeegee requires working horizontal strokes from top to bottom, or using combinations of vertical and angled strokes, depending on the type of window being cleaned. Keep the blade of your squeegee dry between strokes, especially in areas with hard water stains, which makes squeegeeing easier and quicker. Adding vinegar into your washing solution may help break down these stubborn spots faster so they can be removed more easily with a squeegee.

Before beginning to clean the glass of a window, always ensure the frame and tracks have been cleared of grime and dirt, otherwise this could mix with soapy water on the surface and leave streaks behind. If hard water stains prove difficult to eliminate with standard methods alone, add 1 tablespoon of vinegar into your solution solution as an aid for effective removal.

Fannedging can also help minimize streaking; this technique involves moving the squeegee in various directions to keep water or cleaning solution from seeping under its blade. Furthermore, regularly replacing rubber blades will keep streaks at bay; keeping multiple spare blades on hand could save both time and money if unsure which kind to use; you could always consult your local window cleaning service provider for advice if unsure which to purchase.


Towels are an essential component of the cleaning process. Not only do they keep hands dry, they help create a streak-free finish on windows. Although paper towels may leave behind lint or streaks when cleaning windows, reusable microfiber cloths like Casabella glass cloths offer superior effectiveness at cost-efficiency; their honeycomb texture allows them to quickly catch water spots and smudges without scratching surfaces; washing is simple; they make an excellent choice for both interior and exterior window washing!

Professional window cleaners require an essential piece of equipment – the bucket. A bucket must be large enough to store detergent, water and squeegee while still fitting all equipment neatly inside it. Furthermore, it should be made from high-quality and long-wearing material like Ettore super bucket – an excellent choice that provides durability while fitting all tools perfectly in its size and dimensions.

Professional window cleaners use more than basic tools when it comes to window cleaning; they also utilize different chemicals and cleaning solutions tailored specifically for specific problems. These solutions may help remove stubborn stains or soften mineral deposits; deodorize, disinfect and deodorize windows; some cleaners even contain bleach that’s especially helpful in deodorizing or disinfecting them – something bleach is particularly good at doing. They may also help eliminate mold, mildew or fungus growth that threatens indoor air quality – this helps prevent harmful bacteria or fungi growth which could further compromise indoor air quality compared to conventional cleaners’.