Masonry Nailing Trick
If you’ve always had trouble driving masonry nails into concrete to mount furring strips or boards, try this trick. Drill a hole with a masonry bit through the wood and into the concrete. It should be slightly larger than the nail diameter and about 1/8 in. shorter than the nail length. Cut the head from a round, fluted masonry nail with a hacksaw and push the nail through the board into the hole. Then drive a second masonry nail alongside the first. The two nails will wedge into the hole and give you a great grip.