One of the benefits of this method is that more rigid minimum and maximum lag screw location configurations associated with mounting to band joists can be avoided.
Ledger board to concrete block.
Hold the ledger board in place on the cinder block.
The threaded rod used with the anchors must be at least 1 2 inch in diameter and must penetrate the block by at least 3 1 2 inches.
On this project the 2 10 joists of the main deck frame sit just about even with the top of the foundation and a landing framed with 2x8s sits atop the main frame serving as a transition point.
It s also what establishes the overall height and levelness of the entire deck frame.
Repeat for each hole making sure that each screw is run all the way in until the head is flush.
2 stage the ledger board flat on sawhorses.
Beginning from one end drive one 2 1 2 inch tapcon style concrete screw through each pilot hole in the board and into the cinder block.
Ledger board attachment to a solid concrete foundation wall when attaching a ledger board to a masonry wall you will want to first cut the ledger board to size and have two helpers hold it in place so you can drill two holes every 12 through the wood where your bolts will be installed.
This wood strip allows other pieces to be joined to the wall with relative ease.
Ledger boards are used to make joints between lumber structural elements and other materials.
Fastening a ledger to concrete.
Line up the pilot holes in the board with those on the block.
The ledger is not only the structural connection between the deck and the house.
The fourth technique involves securing the ledger to a concrete foundation wall rather than to the first floor band board.
When fastening to uneven stone or stucco the ledger board must be supported from beneath with a ledger attached to the solid concrete foundation at the bottom of the wall.
Yes there are products available for anchoring a ledger board to hollow concrete block foundations concrete masonry unit cmu.
There are a handful of manufacturers that produce epoxy and other adhesive anchors that are tested for use in hollow cmu.