The short and simple answer to this question is yes, it definitely does matter if the graffiti has been there a long time! When it comes to graffiti removal, one thing to have at the back of your mind is prompt removal is always the most effective. However, this doesn’t mean that a long existing graffiti can’t be removed. Graffiti that has been in existence a long time can be removed, but you shouldn’t expect this to be a walk in the park. If you don’t have the experience, tools and skills to pull this off, it’s strongly recommended that you call in a qualified professional for help so as to ensure the best result is achieved without any form of damage to your walls. However, if you wish to give this a shot, then here are some tips that should put you in the right direction.
Here, we’ll advise you to get an effective graffiti cleaning solution such as Elephant Snot® to remove the long existing graffiti. To start the removal process, simply brush the product ( Elephant Snot® ) with the help of a wallpaper brush on the affected wall. Once completed, let the product sit for about 45 minutes to 1 hour to make for an easy removal. After this, you can then proceed to power washing it off at about 1400 to 1600 psi cold water. This should remove virtually all the paint leaving only a few behind. Identify the remaining stubborn graffiti and go for a second application. Repeat the process until the graffiti has been fully washed off. This should leave no damage to your wall whether brick or mortar.