What paint is that? There are graffiti blockers that cover tags (Pigmented shellac) but have never heard of anything that makes a surface impervious to paint.

may be thinking of something like this.
Web Link

Thank you for your concern. Rest assured, the mural is fine it's just not completed and the artists will be using a product to protect it from graffiti. So keep watching... the mural is only getting better with more surprises before it is done!

Thanks Christine. They are back at it today working to put the finishing touches on the old cars and other things that are still going on to it. We are so happy with they way it's looking. Keep up with the progress and stop by to say hellow to the artists.

Happy Holidays & Merry Christmas to all
From all of us at Valley Plumbing

Philidelphia Mural Arts uses a product called TSW4 Acri-Master to protect their murals. I think it's available at Kelly Moore and/or Sherwin-Williams. That should work!

The mural along the valley plumbing building is extraordinary and classic! What a great scene to sit and explore. Every time I see it, I notice something I didn't catch before. It's unfortunate that something similar wasn't done on Strizzi's wall, along the main strip.