Fastening a ledger to concrete.
Ledger board to concrete block.
Ledger boards are used to make joints between lumber structural elements and other materials.
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.
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.
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.
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.
It s also what establishes the overall height and levelness of the entire deck frame.
The ledger is not only the structural connection between the deck and the house.
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.
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.
There are a handful of manufacturers that produce epoxy and other adhesive anchors that are tested for use in hollow cmu.
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.
The fourth technique involves securing the ledger to a concrete foundation wall rather than to the first floor band board.
This wood strip allows other pieces to be joined to the wall with relative ease.
Line up the pilot holes in the board with those on the block.
Yes there are products available for anchoring a ledger board to hollow concrete block foundations concrete masonry unit cmu.