The best way of getting rid of graffiti on a brick wall is going to depend upon the kind of wall surface involved. A smooth, unmarred surface, like a painted and plastered wall, tends to be easier to clean than brickwork with more texture. In order to remove the graffiti completely, it may be possible to simply repaint the area. Some bricks and stones are so heavily stained that only a thorough scrubbing with a commercial cleaning product may lift the stain. In cases where there’s just the tiniest amount of graffiti left, some people will use diluted lemon juice or vinegar to wipe off the graffiti.
Although this may seem like an effective solution, it won’t actually be effective for most kinds of graffiti cleaning. Of course, a professional can use a specialised acid cleaner that is designed to chemically react with the graffiti and remove it, but there’s no way of knowing how much acid to use without risking your health. If you’re worried about health issues, there are organic alternatives available to you, or you could use baking soda to remove graffiti on brickwork safely. Simply scrub the affected area with a stiff brush or sponge dipped in the solution. Be careful not to let any residue or paint come off, as it could end up doing damage to your paint or wallpaper. After allowing the affected area to dry for a few hours, you can apply another coat of paint or cleaner to make sure the paint has dried thoroughly.
If your brickwork is badly scratched or damaged, it may be necessary to undertake spray or blast cleaning to get rid of the graffiti. Spray or blast cleaning involves using high pressure air to blow abrasive particles and dirt into the graffiti area. For optimum results, a rotary scrubbing machine should be used. This is a more expensive method than many other forms of graffiti cleaning but is ideal for severely damaged areas. You should avoid using too much pressure or power and wear protective gear if possible when using either a rotary or oscillating scrubbing machine.
If your brickwork needs a more aggressive cleaning method, you might consider using a vacuum or power brush. These tools are suitable for use on bricks and mortar, but not on concrete or tiles. They’re not recommended for all forms of graffiti removal, and not everyone can use them to effectively remove graffiti on metal and painted surfaces. Although a power brush or vacuum may be good enough for light graffiti removal jobs, they are not generally advised for removing thick layers of paint.
If your brickwork is still covered with paint after using a variety of methods to get rid of it, you may wish to try applying a combination of chemical cleaning products along with your first choice of abrasive cleaning methods. Applying a combination of muriatic acids, citrus fruits and acetone to lightly rub away the remaining paint can be a great way to restore your damaged walls. It can also be helpful in removing mold and mildew.
Another option would be to hire a professional company to carry out the cleaning brickwork for you. There are many reputable companies that offer this as a service and you can usually get them to remove graffiti from your damaged walls in one day. These professionals will use special products which are formulated to help lift off the graffiti and restore your brickwork to its original condition. These chemical products are not generally safe for use around young children and so should be used with caution. However, this is a far cheaper alternative to having to undertake major renovation and repair work on your home.
One more method to help remove graffiti is with compressed air. This method is a little rough around the edges but can take off large sections of paint quickly. However, it is best not to use a blast media product unless you are confident of using it and having completed several attempts at the job before hand. With the blast media process, too much abrasive cleaning liquid is usually used, which can lead to a chemical reaction which causes damage to the wall behind. This can make bricks fall out or chip away.
A good mixture of muriatic acids, lemon juice and club soda is another option for some people. To use this method effectively, you should mix crushed glass with club soda to form a paste. This paste can then be applied to bricks that have been damaged by acid spill-overs and you can achieve a much more even finish. However, this paste can chip away from repeated applications as it leaves a sticky residue onto the bricks.