Hey guys I'm really not sure which anchor type to use. Im thinkin about furring out my basement concrete block wall to attach 1/2" drywall. I feel more comfortable with tapcon screw method over masonry nails. DOes it matter for tapcon screw if I drill into mortar versus main block?
Use screws, the nails usually don't hold well in block walls and don't screw into the mortar joint, it usually won't hold either.
You can use deck screws and a strand of electrical wire #12 romex cheaper than the tapcons. Drill hole put strip of wire in the hole and screw in the screw, it will hold and you can sink it head of the screw most times.
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