An important factor to consider when removing graffiti is to ensure that the substrate is not physically damaged during the removal process. While many contractors may employ the use of abrasives to remove graffiti, the building owner is now left with a new dilemma of a damaged facade. In some cases, these areas may be subject to repeat graffiti and repetitive use of abrasive blast media to remove graffiti can lead to an unsightly damaged surface.
This brick wall shown here has seen multiple graffiti “tags” and over years of harsh chemical use and abrasive media blasting, the bricks are permanently damaged beyond repair.

The use of harsh chemicals is common. Some will employ the use of methylene chloride or acid blends to remove difficult graffiti. The problem with this approach is twofold; firstly the personal exposure to harsh chemicals is not a health-safe method of dealing with the graffi ti; secondly it has a very negative impact on our environment. In some of these cases, the substrate is damaged from the reaction between the brick mortar and the chemical being used to attack the graffiti.
Avoid the use of abrasives (sand or soda)
Harsh chemicals will damage brick, mortar and other substrates
Consider the environment
Abatement Coatings protect long term and prevent expensive damage
Damage due to abrasive media
Proper Steps to Removal
Removal Process
Completed Removal
Example of soda blasting
End Result (compare above)