Moze
Active Member
There is/are no replacements for physical fasteners........ hidden, stand-off or whatever. Any adhesive or double sided tape can come loose for any number of reasons. Other than a hurricane or earthquake, the physical fasteners have a far better chance of not having something land on some unsuspecting pedestrian.
The question isn't whether something will hold OR not, but if it doesn't, the consequences you'll pay for not making sure no one is ever hurt from YOUR installation.
Lots of variables here.
Here's my take on this...
Let's say he's dealing with 1/4" acrylic (which isn't a true 1/4"....more like .220") and he's stud-mounting it. They drill maybe 1/8" into the acrylic and tap it. The studs thread in maybe a turn and a half. He installs it in brick with silicone to help hold it. Maybe he knows he should use a neutral cure silicone which is recommended for masonry. Maybe he doesn't and he uses an acid-cure which isn't recommended for masonry. Either way, kids hit it, the building shifts, whatever....that sign can easily fall if stressed at all.
Take the same sign and tape mount it with VHB tape and Lexel and you will literally need a pry bar to get it off the wall.
If the OP would post a pic of the install surface and thickness of the acrylic, a definitive answer could be provided. Otherwise, we're only guessing at the 'best method'.