I might have a need to remove a granite counter top away from the cabinets in order to perform some repairs.

The counter top is large, 44" wide and over twelve feet long (in two pieces). It has a cook top and a double sink mounted to it.

How is a granite counter top typically fastened to the cabinets below? Is it using construction adhesive or some sort of mechanical fasteners?

If it's using adhesive then the only way is to pry it loose from the top of the cabinets right? If the cabinets are made of particle board is there a significant chance of rips and tear outs?

Also how are two pieces of granite joint together? If I need to remove it I will need to break off that seam as well. Is it again joined together using conventional adhesive or something stronger like epoxies?

 

Short answer, it ain't gonna happen. The countertop will crack, especially at the seam, and it is unbelievably heavy. Sometimes they use silicone, and I have seen some with nothing due to the weight and confinement (alcove) restrictions.
I would call in the pros on this one.

 

What maintenance do you need to do? I agree with Chandler, removing the countertop sounds like a bad idea.