Mounting to smooth granite outside

[csudman]

I have a golf course we're rebranding. They have really nice granite hole markers at each hole. the old logo is engraved into the marker. The plan is to route alumacore into their logo and attach. The granite is a smooth polished finish and I'm conserned about adhesion over many years. Should I use a angle grinder to rough the surface where these will be attached? Planning on using double sided tape to hold and silicone. Thoughts?

 

[d fleming]

Drill and stud mount.

 

[Rick]

Another choice is to mechanically attach a backer to the granite,
then use the panel with the logo and attach that to the backer
using VHB and Lords Adhesive

 

[csudman]

Drill and stud mount.

I'm just terrified of screwing up the granite. They have to be 1000.00+ each to replace.

 

[Rick]

You probably could get away with just
adhesive... granite countertops are usually
epoxied to form a bullnose or finished edge

 

[csudman]

You probably could get away with just
adhesive... granite countertops are usually
epoxied to form a bullnose or finished edge

That was my thought, but do the have the same supersmooth finish where they are joined?

 

[SIGNTIME]

If you're really nervous you can drill with glass/tile drill bits but it will take longer. I would drill with regular masonary bit and hammer drill just test where you wont see (where the sign meets the ground)

 

[Rick]

That was my thought, but do the have the same supersmooth finish where they are joined?

It's rough, but only 1"-1 1/2" thickness is used to bond the surface.
The weight difference of the material you are dealing with is only a
fraction of what granite weighs. And the sign will probably have a larger
area to bond with. I think 1/8" aluminum would be a little more stable.

 

[Mosh]

VHB will hold it. No etching or anything, just make sure it is clean.

 

[Jackpine]

VHB will hold it. No etching or anything, just make sure it is clean.

Totally agree....VHB will do the trick.

 

[Pat Whatley]

Agreeing on the VHB. Don't use silicone.

 

[Moze]

VHB & neutral cure silicone or Lexel would be my two cents. You'll need a pry bar to get them off.