Removing blood stains from concrete is not easy. Concrete is a porous material and immediately absorbs blood, which, in fact, creates a problem. In order to effectively remove blood stains from concrete, you will have to use special chemicals. They will dissolve clotted and dried blood. In this article, we'll show you how to do it.
Step 1. Put on rubber gloves, a respirator, and safety goggles
Wear clothing that protects your skin from chemicals.
Step 2. Soak the blood stains with cold water
Step 3. Sprinkle a thin layer of sodium peroxide powder over the stains
Be very careful as this product is very toxic! The powder should never get into your lungs or on your skin.
Step 4. Wet the powder with water
You can do this in two ways.
- Spray it with a spray bottle. Do this carefully, as sodium peroxide is toxic.
- Place a cloth soaked in water on top of the powder.
Step 5. Leave the stain on for a few minutes and then rinse it off with plain water
It is very important that you wash off the powder as thoroughly as possible. Otherwise, the resulting acid can damage the concrete.
Step 6. Take a brush and scrub the stains vigorously with it
Step 7. Now you will need to neutralize the peroxide
To do this, pour it with vinegar.
Step 8. Rinse everything thoroughly with water again
- The blood must be washed off immediately.
- Since you will be dealing with chemicals, keep the necessary tools on hand to neutralize their effects in the event of an accident.
- Hydrogen peroxide or trisodium phosphate can be used in place of sodium peroxide. But sodium peroxide is much more effective. If you are using hydrogen peroxide, you do not need vinegar to neutralize it.
- Be sure to sign the containers in which you store the chemicals.
- Do not store unused blood stain removers.
- The workplace should be well ventilated.