If you’ve got blood stains on painted walls or other surfaces, the best thing to do is act quickly before they set. First, soak a cloth in cold water and then use soap to scrub the stain. You can also use a sponge with diluted vinegar or 3% hydrogen peroxide. Then rinse well and let the fabric dry. This method works well for fabric sofas and other furniture, but it’s not recommended for wooden surfaces. Regardless of the cleaning method you choose, be sure to test all solutions in an inconspicuous area before attempting to treat a larger surface.
In most cases, a bloodstain on a wall can be easily removed if you act quickly. For example, if you’re in the middle of dinner and notice blood on the walls, wipe it with a sponge or rag soaked in a mixture of salt and water. Then blot the stain until it is no longer visible, and wash the rag or sponge.
On a more serious note, if you find blood on the walls of a home or other building, you need to decide whether you need to repaint the entire room. If the blood has been there a while, you may need to obtain what is called a stain block primer, which will help hide the stains and prevent them from showing through new paint.
Can You Paint Over Blood Stains
There are many ways to get rid of blood stains on wood and other materials, but some methods are better than others. According to Samantha Kennedy, a family and consumer sciences extension agent in Wakulla County, Florida, if the bloodstain is fresh, you can remove it by scrubbing it with a sponge and soapy water. This will also help remove odors from the area.
If the stain is old and dry, a good way to remove it is by making a paste out of cornstarch. Apply the paste over the bloodstain and rub it in. After the stain is completely removed, wipe away any remaining cornstarch and then put the cloth in a sunny location to dry. If the stain is still visible, try rubbing the spot with a bar of soap before attempting to resoak and re-wash the fabric.
For more serious bloodstains, you can use a melamine foam eraser such as a Magic Eraser or a Scotch-Brite Easy Erasing Pad. Wet the pad and then wipe it over the bloodstain, then let it dry. This will remove most stains. If it remains, you may need to reapply the melamine pad.
There are other methods to remove blood stains from wood and other materials, but these require some training in forensic crime scene analysis to master. Forensic experts recognize different types of bloodstain patterns, such as passive stains, dynamic stains and contact patterns. Dynamic stains are caused by movement, such as dripping, and contact patterns are those that result from direct force against a blood mass. Passive stains are the result of contact with other surfaces and can be categorized as drip patterns, cast-off patterns or blood pools or flows.