They all agree that the best choice would be a polyurethane construction adhesive such as.
Best way to glue granite to wood.
A complex blend of resins and hardeners epoxy glue can be used for the installation of the slabs as well as the glue used to join two pieces together such as with two slabs for more thickness or where two slabs butt up against each other.
These type of adhesives are very dated in their technology.
Wipe the bottom side of the stones with a damp cloth to remove any dust or dirt.
They have to be manually mixed and if the correct mix is not achieved the bond will fail.
Apply polyurethane adhesive to the sanded side of the stone as well as the sanded area of wood.
Wipe them dry with a paper towel and allow the stones to air dry completely.
Some reliable polyurethane adhesives are gorilla glue and titebond which both host the ability to join these two materials.
Step 2 scuff the wood gently with a piece of fine grit sandpaper on the area to which you intend to glue.
Titebond greenchoice premium polyurethane construction adhesive dap smartbond heavy duty construction adhesive or liquid nails ln 950 polyurethane adhesive.
Epoxy glue is the most common type of glue used in granite installations as it is one of the few types of adhesives that can provide a bond that is as strong as the stone itself.
A two component epoxy glue was really the only option available to stick granite but this was far from perfect.
Using 80 grit sandpaper will penetrate the surface enough to open the pours on the wood so it will absorb more glue.