Use Bleach 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.
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.
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.
Vinegar is a natural and safe alternative to cleaning concrete with harsh chemicals. In the case of algae and mold, it does a better job than bleach, and it is better in the long term for killing these infestations. Oftentimes, vinegar can be found in your home or garage.
For general cleaning and disinfecting, the bleach and water solution should contact the surface for 6 minutes. For mold and mildew stains, allow the bleach solution to contact the surface for 10 minutes.
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.
Leave the bleach solution on the concrete for about 20 minutes, then sweep briskly with the stiff broom to dislodge the softened grime. Use the scrub brush to tackle stubborn areas. Rinse off the patio.
What chemical will clean concrete? If you have mildew stains, the best chemical to clean concrete is trisodium phosphate. Combine two tablespoons of the chemical with two tablespoons of powdered laundry detergent and one-quart water. Then, apply it to the stained area and scrub using a stiff brush.
Rinse the bleach off with a hose. If those stubborn stains aren't coming off, mix oxygen bleach with water to make a paste that's the same consistency as peanut butter. Apply to stained areas and let it sit for an hour.
5. 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.
A true white color can only be achieved using a white cement mix. Add white concrete pigment to a gray concrete mix to create a sleek “ash” look that's popular in modern homes.
Cleansing — For mild discoloration, repeatedly flushing the hardened concrete surface with hot water, then scrubbing with a stiff brush, can reduce or remove discolored blotches. Acid treatment — If the discoloration is more severe, a mild acid solution of 1-3% muriatic acid to water can help remove the discoloration.
Steps to recolor faded stamped concrete:
Apply additional coats of stain without waiting for the first coat to dry. Allow the final coat of antiquing stain to dry for at least 8 hours. Once the stain has fully dried, apply a solvent-based acrylic concrete sealer to protect the color from fading in the future.
Pool chlorine is a calcium hypochlorite solution. That means it's very efficient at dealing with tough grimes and stains on concrete. The recommended ratio for chlorine and water is 10:90.
You will need a cleaner like Mud May Day to remove red clay stains from concrete. Applying bleach may kill the organic growth on the concrete, and pressure may rinse some surface dirt from the stain away, but deep set in red clay stains in concrete cannot be removed by using bleach.
The sun will bleach and lighten the overall color of the concrete. However, local aggregate, the shape and size of the placement, and exposure to groundwater will also have an effect on the color of the concrete over time. These factors will also affect integrally colored concrete.
Vinegar 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.
“Of course, vinegar does eliminate some things, but it's important to note it's not a complete solution to disinfectant. It is only 90% effective against bacteria and around 80 percent effective against viruses and mold or mildew. Bleach, however, eliminates 99.9% of bacteria, viruses, and mold or mildew.
Pressure washing is one of the fastest, most effective ways to get your concrete white again. Concrete can change color over time due to pollen, algae, or dirt buildup, but a good pressure wash can easily remove dirt and stains and make your concrete look new again.