How to Remove Old Oil Stains from Concrete Garage Floor


Old oil stains on the garage floor are not only ugly but are also associated with unwelcoming smell. How to Remove Old Oil Stains from Concrete Garage FloorHowever, with the best degreaser for garage floor, you can efficiently get rid of oil spills from the garage floor.

Owing to their porosity, concrete floors are a bit difficult to clean than porcelain. You’ll require a powerful degreaser and a bit of scrubbing to get rid of old stains from concrete garage floor. In this guide, I’ll show you how to remove old oil stains from concrete garage floor.

Related: Best Degreaser for Garage Floor

How to Remove Old Oil Stains from Concrete Garage Floor

The method of removing spilled oil from concrete garage floor will depend on the size of the stain and how long it has stayed.

A large oil spill that stays for long on a concrete floor is more stubborn since oil tends to seep through. It’ll be less tasking to clean oil spills promptly because the oil will not have seeped deep into the concrete floor.

Below are some effective methods of removing oil and grease stains from concrete floors.

Use an Oil Absorbent Material

Oil absorbent also known as sorbents provide an effective means of cleaning newly spilled oil stains. These are basically insoluble materials which are intended to absorb spilled liquids from floors.

One of the best absorbent to use is cat litter. Spread cat litter on the oil stain such that it covers the stain completely. Leave the absorbent overnight so that it absorbs as much oil as possible.

In the morning, scoop the litter into a trash bag and dispose it in the garbage can.

Industrial Grade Floor Degreasers

Owing to their porosity, concrete floors will absorb spilt oil when the oil stain sits for long. Such oil stains cannot be eradicated with laundry soaps or homemade cleaning solutions like baking soda. If you’re dealing with old oil stains, then industrial grade floor degreasers are more preferable.

Most degreasers are alkaline, with the cleaning power varying depending on the pH. Heavy duty degreasers have a pH ranging from 13 to 14 and will be very effective on old oil stains. However, highly alkaline cleaners are associated with damaging or dulling the floor finish.

General purpose alkaline degreasers have a pH of 9-11 and are friendlier to most surfaces.

Highly alkaline degreasers should be used with caution to avoid eye and skin burns.

Bioremediation Floor Degreasers

Owing to their effectiveness and safety, bioremediation floor cleaners are gaining increased usage. Bioremediation is simply the use of genetically-engineered organisms to remove hydrocarbon-based stains from surfaces.

Bioremediation is utilized to get rid of oil spills from lakes, seas and oceans. Bioremediation also provides an effective solution for removing hydrocarbon-based stains from concrete garage floors. They’re formulated to eat away grease, automotive fuels, hydraulic fluid, proteins, starch, pet urine and so on.

When activated, the microorganisms convert the hydrocarbon-based stains to CO2 and water, leaving no residues. Thus, they are not associated with harmful effects to the environment and marine life.

Since bioremediation is non-toxic, you don’t have to worry about your kids and pets.

Another advantage of bioremediation cleaners is that they don’t require scrubbing.

The main disadvantage of using bioremediation is that it requires time to work. Plus you may have to apply more than once to get rid of stubborn stains.

Laundry Detergent or Dish Soap

Laundry detergents or dish soap provide an effective means of getting rid of fresh oil stains from concrete floors. Their pH could range from 7 to 10.5 depending on the intended cleaning purpose and brand.

Such level of alkalinity is enough to lift and clean oil stains before the oil seeps deeper in the porous concrete surface.

Homemade Solutions

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