Cleaning concrete might seem like a straightforward task, but anyone who has attempted to remove stubborn stains from a driveway or patio knows it is anything but simple.
The porous nature of concrete means it easily absorbs all manner of spills, from oil and grease to rust and mildew. This factor makes it difficult to keep clean.
This article delves into the best chemicals for effectively cleaning concrete surfaces. Whether you’re tackling a grimy driveway or sprucing up a decorative concrete feature, understanding the right products and methods can make all the difference.
Why Clean Concrete?
Keeping your concrete clean not only enhances the aesthetic appeal of your property but also extends the lifespan of your concrete surfaces.
Dirt, grime, and other contaminants can cause wear over time, leading to deterioration and the need for expensive repairs.
From concrete driveways and patios to polished concrete floors, maintaining a clean surface is key to preserving the beauty and integrity of your space.
Removing hazardous materials such as oil spills can also improve safety by reducing the risk of slips and falls.
Choosing the Right Concrete Cleaning Products
The best chemical to clean concrete, whether polished or not, will largely depend on the type of stain you’re dealing with.
Always test your chosen cleaning product in a small, inconspicuous area first to ensure the cleaner won’t discolour or erode the finish on the concrete.
The Best Chemicals to Clean Concrete
When it comes to cleaning concrete, there are several effective chemicals that can help you achieve a spotless result.
Let’s take a look at some of the best options:
Vinegar
This versatile and eco-friendly compound works wonders on concrete surfaces. Its acidic nature helps dissolve dirt and grime, making it great for general cleaning purposes. Mix equal parts white vinegar and water, and use a scrub brush or a mop to tackle stubborn stains.
Baking Soda
Known for its ability to clean and deodorize, baking soda is a natural choice for concrete cleaning. Mix a cup of baking soda with warm water to form a paste, and rub it onto the stained areas. Let it sit for some time before scrubbing it with a brush and rinsing it with water.
Oxygen Bleach
Unlike chlorine bleach, oxygen bleach is a milder and safer option for cleaning concrete. It effectively removes tough stains caused by mildew, grease, or oil. Follow the instructions on the product, mix with water, and scrub the affected areas before rinsing thoroughly.
Citric Acid
If you’re dealing with heavy rust stains on your concrete, citric acid is a potent solution to consider. Dilute it with water as per the instructions, apply it to the rusted areas, and let it sit for a while. Scrub gently, and repeat the process if necessary, before rinsing well.
Hydrogen Peroxide
Hydrogen peroxide is a powerful oxidizer and stain remover. It can effectively remove tough stains such as blood, wine, or graffiti from concrete surfaces. Apply hydrogen peroxide directly to the stain, let it sit for a few minutes, and scrub with a brush before rinsing.
Trisodium Phosphate (TSP)
TSP is a heavy-duty cleaner commonly used for removing tough stains and grease from various surfaces, including concrete. Mix it with water according to the instructions on the label and apply it to the stained areas. Scrub with a brush, rinse thoroughly and be cautious, as it can be harmful if not used properly.
Muriatic Acid
Muriatic acid, also known as hydrochloric acid, is a strong option for removing stubborn stains, efflorescence, or mineral deposits from concrete.
It should be used with extreme caution, wearing protective gear and following the instructions carefully. Dilute it with water, apply it to the stained areas, scrub gently, and rinse thoroughly.
Pressure Washer Detergents
Specifically designed for use with pressure washers, these detergents can be highly effective in cleaning concrete surfaces.
They are formulated to remove dirt, grime, and stains without causing damage. Follow the instructions on the detergent and use the pressure washer to clean the concrete thoroughly.
Enzyme Cleaners
Enzyme cleaners are a natural and safer alternative for cleaning concrete. They are effective in breaking down organic stains such as grease, oil, or pet urine. Apply the enzyme cleaner directly to the stain, let it sit for a while, and scrub with a brush before rinsing.
Commercial Concrete Cleaners
Commercial concrete cleaners are specifically formulated to tackle tough stains, dirt, and grime on concrete surfaces. Follow the instructions on the product, usually by diluting the cleaner with water.
Apply the cleaner to the stained areas, scrub with a brush or use a pressure washer if recommended, and rinse thoroughly. Be sure to choose a commercial cleaner labelled for use on concrete surfaces for the best results.
Can You Pressure Wash Concrete to Remove Stains?
Sometimes, chemical cleaners alone are not enough to tackle deeply ingrained dirt and stains. In these cases, pressure washing can be an effective method for cleaning concrete surfaces.
Pressure washers can efficiently blast away accumulated deposits without the need for harsh chemicals, using just clean water at high pressure.
For more stubborn stains, pressure washing in combination with a detergent or chemical cleaners and degreasers can provide an even more effective cleaning solution.
It’s important to adjust the water pressure and choose the right nozzle (typically a 25-degree nozzle for concrete) to avoid damaging the surface.
How To Keep Your Concrete Floors and Other Surfaces Stain-Free
There are some ways you can do to keep your concrete surfaces clean and away from stains that might damage them.
Regular Cleaning
Regularly sweep or vacuum your concrete floors to remove dirt and debris that can cause stains. Properly cleaning your concrete with a cleaner and water can also keep your surfaces stain-free.
Prompt Spill Cleanup
Quickly wipe up any spills or liquids that are accidentally spilled on the concrete surface. The longer a stain sits, the harder it is to remove. Use a clean cloth or mop to blot the spill and prevent it from seeping into the porous concrete.
Being Mindful of Substances
Avoid using or spilling substances that are known to cause stains, such as oil, grease, ink, and red wine. If you accidentally spill any of these substances, clean them immediately using appropriate cleaning agents meant for concrete surfaces.
Utilizing Mats and Rugs
Place mats or rugs in high-traffic areas or areas prone to spills, such as entryways or under dining tables. This protective layer will help catch dirt and liquids, preventing them from reaching the concrete and causing stains.
Using Sealants
Apply a concrete sealant to create a protective barrier on the surface. Sealants help prevent stains by making it more difficult for liquids to penetrate into the concrete. It is essential to follow the manufacturer’s instructions for proper application and reapplication of sealants.
Regular Maintenance
Conduct routine maintenance on your concrete floors, such as reapplying the sealant, and address any cracks or areas of damage promptly. Maintaining the integrity of the concrete helps prevent stains and ensures longevity.
Protective Coatings
Consider applying a clear protective coating to your concrete floors or surfaces. These coatings add an extra layer of protection against stains and can also enhance the appearance of the concrete.
Use Floor Mats and Shoe Trays
Place floor mats at entrances and shoe trays near doorways to catch dirt and moisture from shoes. This prevents these substances from being tracked onto the concrete floor and causing stains.
Be Cautious With Acidic Substances
Acidic substances like vinegar or lemon juice can cause etching or discolouration on concrete surfaces. Avoid using these substances directly on the concrete or clean any spills immediately to minimize damage.
How Stone Protection Can Help You With Concrete Cleaning
If you find yourself struggling with removing stains from your concrete despite your best efforts, then perhaps it’s time to call for professionals.
Stone Protection offers services that can help you remove stains and achieve pristine concrete surfaces with industrial-grade equipment and advanced cleaning products.
We also offer expertise in identifying different types of stains and choosing the most suitable treatment method.
This approach guarantees that whether you’re dealing with pervasive oil stains on your driveway or delicate mildew on decorative concrete, your surfaces get the specific attention they need.
For inquiries and consultation bookings, feel free to contact us here.
Frequently Asked Questions
What do professional concrete cleaners use?
Professional concrete cleaners typically use a combination of specialized alkaline cleaning agents, detergents, and chemicals to effectively clean concrete surfaces.
What kills black mould on concrete?
To kill black mould on concrete, professional cleaners may use a variety of methods, such as bleach, hydrogen peroxide, or specially formulated mould-killing solutions.
What do you spray on concrete before pressure washing?
Before pressure washing concrete, it is common practice to spray a degreaser or a pre-treatment solution to help loosen dirt, grime, and stains for more effective cleaning.
Why does concrete turn black?
Concrete may turn black due to various factors such as dirt, mould, mildew, algae growth, or the presence of organic materials. Weather conditions, lack of sunlight, and moisture can also contribute to the darkening of concrete surfaces.
Can you pressure wash concrete with just water?
While pressure washing with just water may remove surface dirt, it may not effectively clean deep stains, mould, or other stubborn substances. Using a cleaning agent or pre-treatment solution along with water is generally more effective in thoroughly cleaning concrete surfaces.
How can I clean my driveway effectively?
To clean your driveway, use a power washer with a cleaning solution or muriatic acid for tough stains. Rinse the driveway thoroughly after cleaning.
What is the best way to clean a concrete patio?
We recommend using a garden hose or a power washer with a cleaning solution. For stubborn stains, you can try using oxalic acid or muriatic acid.
Can I clean decorative concrete with bleach?
It is not recommended to clean decorative concrete with bleach as it may damage the surface. Instead, use a mild cleaning solution or a surface cleaner to maintain the appearance of decorative concrete.
How can I clean concrete without harming plant life?
To clean concrete without harming plant life, you can use eco-friendly cleaning solutions or vinegar. Avoid using harsh chemicals or acids near plants to ensure their safety.
