While trying to install a 14lb metal shelf to the wall, I had learned from a previous installation mishap to upgrade from plastic anchors to something stronger. I picked up a few toggle bots (3/16" w 3" bolts).
When I started drilling the 1/2" hole, I realized my bit wouldn't go much further than an inch in. It was a hard stop. After the 1" of drywall immediately behind it is what looks like concrete. There is NO space between the drywall and the concrete.
I live in a new condo and the wall happens to be one that I share with my neighbour. I'm not sure what material it's made of, or if these toggle bolts will work.
Does anyone have any advise on how I can get these heavy shelf installed, toggle or no toggle.