Home > DIY Tips & Tricks > Window Cleaning: The Most Common Window Dirt and How to Remove It

Window Cleaning: The Most Common Window Dirt and How to Remove It

Window cleaning is one of those jobs which is often put off. It is time consuming and hard to do right! So, it is important to know the most effective ways to remove common build ups. Although the easiest way to clean your homes windows to a good standard every time is to call in a professional window cleaner like Endeavour Property Services who offer window cleaning in Auckland. Below we will cover the most common things that make windows look dirty and how to effectively remove them and leave your windows sparkling clean.

Traffic Fumes

For many of us living in the city our windows are subjected to a buildup of black greasy traffic fumes. This greasy build up can be hard to remove. In order to achieve streak free windows, it is important to divide the cleaning process up into 3 main steps. Firstly, it is important to use a heavy detergent to break down the grease build up on the windows, something like dishwashing liquid should do the job. Use a soft cloth or brush to break up the greasy build up initially. Then you can move on to more traditional cleaning methods, such as glass cleaner and a paper towel to shine and remove the last of the dirt. But always be sure to thoroughly dry the window to make sure that there are no streaks left.

Sea Spray

For homes near the beach the most common build up on windows is sea or salt spray. This occurs as Ocean breezes carry salty, moist air quite a distance, resulting in an overtime salt building up on exterior windows. If left uncleaned, this salt leaves a white residue on the glass, making windows appear dirty. Salt grows in crystalline form on the glass, meaning that spots left for some time may require a bit of scrubbing to remove. For homes near the beach regular window cleaning is an important part of regular house maintenance.

For most cases, to remove build up salt spray on windows all you need is vinegar, it is easier to apply if put in a spray bottle.  After a few minutes, rub the window with a soft scrubbing sponge or brush. A second spraying of vinegar comes in handy if the window looks streaked or salty after the first cleaning. But the longer you leave the salt spray the harder it is to clean off. So, for very built up spray the best way to remove it is to purchase a commercial lime removal product does the trick. These products are designed to remove mineral build-up from bathroom fixtures and faucets and also on glass. All you need to do is spray the product directly on the glass, then wipe with a damp cloth. This type of product should not be used on plastic windows or painted surfaces, so be careful to wipe away the product before it drips onto paintwork.

Bird Poo

Bird poo is undoubtedly one of the hardest substances to remove from windows, especially once it sits for a few days and dries out. One easy way to remove the bird poo is to tip club soda or sparkling water over it, leave it to fizz and this should help to break up the dried-on poo. You can also use a combination of vinegar and water as the acid in the vinegar will break down the poo and loosen it making it easier to remove.


Unfortunately, in spring your home’s exterior windows are often subjected to a build-up of pollen. This thin yellow film is not only unsightly but it is especially a nuisance if you suffer from allergies. Luckily enough the best way to clean pollen off your windows is using a homemade window cleaning solution made up from things you probably have lying around your home.

To make this homemade cleaning product you will need ½ cup ammonia, ½ cup white vinegar; 2 tablespoons of cornflower; and 10 cups of water. Combine the above ingredients and be sure to stir thoroughly to ensure that the cornflower gets fully dissolved. Then dip a sponge into the solution and generously apply it to the affected windows, working your way down from the top. Then use a squeegee to dry the windows and make them streak-free.


The best way to remove cobwebs from windows is to first use the nozzle or a handheld vacuum to suck up the bulk of the cobwebs from the window. Then it is best to use a combination of bleach and hot water to clean the window. This works effectively as it will kill both the adult spiders as well as their eggs. It also acts as a degreaser so it’s a good initial window cleaning solution. If webs are really stuck on the glass, you can use a hose and soft brush to loosen them up and remove them.

Finger Prints

Windows are notorious for collecting fingerprints whether you have young children who have to touch everything. Or, overtime your windows have been subjected to hand and fingerprints. First, you need to use either your favorite store bought window cleaner, or make your own window cleaner from white vinegar and dishwashing liquid. Spray it on the window and use a paper towel or newspaper to wipe it away. Or you can use a microfiber cloth which is extremely effective at removing fingerprints and streaks from windows.