1. Best Overall Concrete Cleaner—ZEP Purple Pressure Wash. Zep concrete cleaner has several great products, and the ZEP Purple Pressure Wash outdoor cleaner is no exception. This alkaline cleaner is low foaming and easy to rinse from the concrete surface.
Neutral pH neutral cleaners are ideal for cleaning sealed concrete surfaces free from embedded dirt and deep stains. They can also be used on unsealed indoor or outdoor concrete surfaces that only require a mild cleaning. Alkaline concrete cleaners have powerful degreasing capabilities.
In fact, vinegar removes mold from concrete better than bleach. Bleach will only remove the top layer of mold, causing the mold to return.
Vinegar and Baking Soda
Simply fill a spray bottle with equal parts water and vinegar (or water and baking soda), and add a little bit of liquid dish detergent. Spray the mixture on your concrete surface and let it sit for about 30 minutes. Then scrub and rinse your concrete.
Use Bleach
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. With the mixture ready, spray it on the driveway, allowing it to sit for 10 minutes. Then, use a stiff brush before rinsing with clean water.
After the concrete has dried for at least 24 hours, you can effectively apply a concrete sealer. A sealer helps prevent future stains and potential damage from products like ice salts.
Use a detergent such as Dawn or Ajax dishwashing liquid mixed with water to brighten a concrete patio that hasn't been cleaned in a while. Use a detergent such as Dawn or Ajax dishwashing liquid mixed with water to brighten a concrete patio that hasn't been cleaned in a while.
You can use Simple Green Oxy Solve Concrete and Driveway Cleaner to clean a concrete patio with or without a pressure washer. It removes oil, grease, grime and most stains and discolorations. Its biodegradable formula is safe for lawns and pets.
Driveways and Sidewalks
If you don't have access to a pressure washer, you can use Super Clean, a hose and a garage broom to get similar results. Spray the area down with cold water, spray on some Super Clean and let it sit a few minutes. Work it into the concrete with the garage broom, and rinse with the hose.
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.
The main difference is that power washing uses highly pressurized steam to do the cleaning while pressure washing just uses unheated tap water, without the help of a heating element.
A power washing machine's jet wash uses heated water, while a pressure washer uses cold water. Both techniques use water pressure to remove dirt, grime, algae, etc., from outdoor surfaces. However, power washing also heats water to clean hard to remove dirt.
Here's a short list of some of the usual chemicals used in commercial pressure washing: Oxalic acid – useful in rust removal and other similar cleaning processes. Citric acid – stain removal and cleaning of concrete driveways or wooden decks. Sodium hypochlorite – disinfects and removes stains.
You can power wash concrete all year as long as the temperature is about 40 degrees Fahrenheit. Most homeowners and businesses prefer to do it in the spring or summer to reduce the spread and growth of algae and mold. It also reduces pollen, which can affect allergies.
Concrete cleaning calls for powerful pressure washers featuring high pressure levels of 3000 PSI. However, if you will be using the power cleaner to maintain a range of surfaces in addition to concrete, choose one with adjustable pressure levels and set it to about 3000 PSI when you need to clean concrete.
As a gentler cleaner, bleach can't harm concrete's durable material. Aside from being an effective cleaner and stain remover, it also acts as a disinfectant to the concrete surface.
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.