To attach a ledger to an icf wall the irc calls for direct concrete to wood contact which is usually accomplished with anchor tunnels these plastic inserts thread into 6 inch diameter holes drilled in the foam forms figure 2.
Ledger board to concrete wall.
These 18 articles will teach you how to install flashing and bolt the ledger connection to the house rim.
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.
The ledger is not only the structural connection between the deck and the house.
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.
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.
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.
Hold the ledger board in place on the cinder block.
Forethought pays off when dealing with icfs.
Line up the pilot holes in the board with those on the block.
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.
It s also what establishes the overall height and levelness of the entire deck frame.
The fourth technique involves securing the ledger to a concrete foundation wall rather than to the first floor band board.
Fastening a ledger to concrete.
Ledger board attachment to a solid concrete foundation wall.
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.