To combat mold and algae stains on concrete, consider Mold Armor E-Z House Wash concrete cleaner. This water-based cleaner uses Microban foaming technology to lift dirt and mold from concrete surfaces, and provides long-term stain resistance. It works on most stains in minutes with no scrubbing required.
Use a mixture of water and white vinegar to spray down the area and kill the algae. Rinse the surface alga off the concrete with a water hose.
Yes, you can use vinegar to remove mold from concrete. This household product is better than bleach when removing mold. Bleach may only remove surface-level mold, causing the latter to return over time. Mold, however, will die once it encounters vinegar.
Green mold on concrete can be removed with bleach, water, and dish soap.
Our top choice for mold and mildew, RMR-86 Instant Mold and Mildew Stain Remover, comes in an easy-to-use spray formula and kills all of these culprits on contact. Other types of stains are caused by manmade products, such as motor oil, paints, cleaners, and solvents.
While it is possible to use bleach to kill mold as well, experts agree that vinegar is a much better option. Unlike bleach, vinegar can effectively kill the mold at the root, which means it's less likely to return. Vinegar is also less toxic than bleach, making it a better choice for household use.
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.
Proper Design for Water Control
One of the keys to fungus and algae prevention on concrete is to control the flow and presence of water. For exterior surfaces, this is commonly achieved with a suitable design that uses gravity to channel the water flow away from the structure.
Clean the area or surface regularly and use a specialist green stain remover, such as our Green Growth Remover, which helps prevents regrowth and delays it coming back. Good drainage and air circulation. Don't place your favourite pine wood planter in a dark, shady corner. Move your patio furniture around regularly.
Barley straw is a natural way to fight algae. On contact with water, the straw starts to break down, and as it does so it releases peroxides into the water which combat algae. Available in mini bales, or as a concentrated extract of barley straw liquid, it's a natural way of chemically fighting algae.
Kem-Tek algaecide, one of the best algae removers for pools, contains polyquaternium (polyquat), which is effective on most types of algae, making it a good all-purpose product.
It removes dirt, oil and grease from concrete, driveways, asphalt, part and equipment. Nor for use on sealant coats.
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.
Apply the bleach solution
Allow the bleach solution to contact the surface for up to 15 minutes. Work in smaller sections if the patio is too large to finish in that time.
Will Vinegar Damage Concrete? Cleaning concrete with vinegar will not damage it! However, saturating concrete for an extended period will damage the cement that binds concrete together. Over time, vinegar erodes the concrete itself, so be careful.
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.
Cleaning vinegar, which contains 6% acetic acid, is the best type for killing mold. White vinegar containing 5% acidity will also work just fine. If you don't already have some at home, white vinegar can be inexpensively purchased at most grocery stores.
Distilled white vinegar is non-toxic but acts much more slowly than chlorine bleach or hydrogen peroxide. While it will kill the mold, the discoloration and stains may remain and require additional scrubbing with a household cleaner. Distilled white vinegar can be used safely on most porous and non-porous surfaces.