Hi! I’m working on a project & have realized I need some help. Hoping someone has the answers I need. I’m using mirrored acrylic cutouts as wall decor & need to figure out how to keep them permanently in place. As you can see in my little picture below, the walls they’re stuck to are very much painted & the acrylics are very small. Also just (to make it more of a challenge) the walls are a matte finish…and the mirrors are not (which pretty much seems to blow my idea of a spray-on sealant out of the water).

And really, I do mean Permanently. At this point they’re stuck on with 3M super 77 but most of them are wiggly even after having only been placed within the past 3 weeks (and some of their individual locations are quite important). They’ll be subject to mild-to-moderate abuse (well, as bad as it can be starting 3/4 of the way up a wall) but very little potential moisture & absolutely zero sun damage. There’s definitely a potential for heat .

I’d love any comments. I’m stumped!

Thank you!!