To maintain the lighter color of a concrete driveway, many homeowners turn to cleaning with bleach, but you should not power wash with bleach because it can damage your pressure washer.
Pressure washing a house with bleach is a good approach to get rid of mold, moss, and substantial dirt. On the other hand, Chlorine is an excellent choice for removing oil stains from concrete floors. To avoid long-term damage, chlorine is ideal if you plan to pressure wash your backyard floor or driveway on your own.
You already know that bleach is a trusty household product for brightening up stains on garments. But that's not all; chlorine bleach can also be used for cleaning the concrete driveway. Of course, you should dilute it with equal parts of water or a 1:1 ratio.
As a gentler cleaner, bleach can't harm concrete's durable material.
In fact, vinegar removes mold from concrete better than bleach. Bleach will only remove the top layer of mold, causing the mold to return.
Whether your patio is sealed concrete or cement, or even sealed concrete pavers, a bleach and water solution makes it easy to clean away built up soil, stains from leaves and pollen, mold, mildew and algae.
Overall, we recommend Zep Purple Pressure Wash (US$13.98, The Home Depot). Alkaline cleaners are great for lifting oil stains, grease stains, and other petroleum-based stains from concrete. It's an added benefit that you can use it with a pressure washer, making the job that much easier.
Concrete detergent is incredibly effective. I tried pressure washing without it, and the result didn't come close. It helps remove stubborn oil, paint and dirt stains. I used Zep Driveway & Concrete Pressure Wash detergent, but many great options are available.
Some common chemicals used for cleaning concrete include alkaline cleaners, acid cleaners, and enzymatic cleaners. Alkaline cleaners are effective for removing general dirt and grime, while acid cleaners are used for removing rust stains or mineral deposits.
Never Use Bleach with Pressure Washers
But, when you see mold or mildew growing on your siding or walkway, don't even consider running bleach through your power washer. Bleach will corrode your pump's seals and essentially render the pressure washer useless.
As with any major roadway, asphalt is best sealed in driveways. The chances of oil damage and the hot sun take their toll in time, and a good sealant every three years or so can be a huge asset after pressure washing.
Formulated to cut grease, dish soap is another effective solution for treating oil stains on a driveway. Squirt some dish soap on the oil stain. Scrub the stain with a heavy-duty brush. Then rinse away the soap with water.
After disinfection with bleach solutions, surfaces should be rinsed and dried. Bleach can be irritating to skin and mucous membranes, so any residue should be removed prior to returning animals to the environment.
Bleach is commonly used to whiten concrete and is very effective at doing so if the initial stain is removed beforehand. Bleaching stained concrete white prepares it for any additional coloring treatments that you may wish to apply in the future.
Pour ⅓ cup of Clorox® Disinfecting Bleach into 1 gallon of water in a plastic bucket or container. Apply bleach solution using a brush or broom on horizontal surfaces, and a sponge or mop on vertical surfaces. Heavily soiled surfaces may require additional scrubbing. Wait 6 minutes for disinfecting.
Bleach. Does a large area of your concrete need a good cleaning? Fill a bucket with warm water and about ¾ a cup of liquid bleach and start mopping. Let the bleach solution sit for a few minutes before using a bucket with clean water to mop up the bleach solution.
Spraying a vinegar solution (1 cup of vinegar per gallon of water) onto the surface, saturating it fully, should kill most strains of mold. Vinegar spray can be followed by power washing or manual hand scrubbing to remove the dead mold.
There are several reasons not to put it in your pressure washing system: While bleach is effective in killing mold and mildew, it really is not the best solution for cleaning. Bleach can be used to prep for paint, but it will corrode hose nozzles and pump seals. It can essentially destroy your pressure washing system.