Attaching Ledger Board To Concrete Foundation

The home is only 6 months old but i don t think there is a cure period prior to attaching a ledger.

Attaching ledger board to concrete foundation.

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. I have to attach a ledger board to a concrete wall with no access to the inside of the wall. This results in a tensile load on the anchor bolts rather than just a shear loading. Here 39 s what i was thinking of doing.

All my joists are going to be 2x8 so i was going to use 2x10 for the ledger board. Fastening a ledger to concrete. I am going to run 2 lapping strips of grace vycor ledger flashing it is like ice. It s also what establishes the overall height and levelness of the entire deck frame.

Typically a deck ledger. These 18 articles will teach you how to install flashing and bolt the ledger connection to the house rim. Properly installing a ledger board for your deck is one of the most important structural components of building a safe and strong deck. Our newest project starts off with building the deck and pergola framing.

The ledger is not only the structural connection between the deck and the house. Most everything i have read talks about connecting it to wood not concrete. We are attaching the deck ledger to a concrete foundation. I want to decide on a few options to discuss before i approach them.

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. 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. The fourth technique involves securing the ledger to a concrete foundation wall rather than to the first floor band board. I am thinking about 1 2 threaded rods embedded and mortered into 6 inch deep holes made with a hammer drill i have not decided yet or talked to code office or engineer yet.

The sagging of the joists causes a rotation of the ledger board and due to the constraint of momvement caused by the concrete wall the ledger board does not rotate about the anchor bolts but rather the lower edge of the ledger that is in contact with the concrete.