interior painted block walls

[onedge]

I have a church wanting some decals on a painted block interior walls, the paint is pretty smooth. What type of material should I use for this?

 

[AaronSSsignsKC]

I always us 3m 8524 text wall wrap for anything thats block or brick interior or exterior.

 

[AaronSSsignsKC]

3m 8624*.

 

[onedge]

Thanks