The ledger is not only the structural connection between the deck and the house.
Ledger board to concrete block.
It s also what establishes the overall height and levelness of the entire deck frame.
Yes there are products available for anchoring a ledger board to hollow concrete block foundations concrete masonry unit cmu.
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.
Drill two lengths of ledger board for anchors as described above and anchor them both to the solid concrete stacked to provide a 3 wide ledge along the top edge.
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.
There are a handful of manufacturers that produce epoxy and other adhesive anchors that are tested for use in hollow cmu.
A ledger is typically a 2 by 4 or larger piece of lumber attached to a wall or other surface with the use of fasteners such as nails or screws.
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.
Use the horizontal grout joints between the courses of block as a reference and snap a chalk line across the face of the block at the ledger height.
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.
Line up the pilot holes in the board with those on the block.
Repeat for each hole making sure that each screw is run all the way in until the head is flush.
Hold the ledger board in place on the cinder block.
Ledger boards are used to make joints between lumber structural elements and other materials.
The fourth technique involves securing the ledger to a concrete foundation wall rather than to the first floor band board.