Installing a Ledger on Stucco

Stucco is a little easier to attach a ledger board to because you don’t need to remove the stucco like you would with siding. The only thing that needs to be cut on the stucco is a groove that the ledger sits inside of.

 

BEFORE YOU BEGIN ANY DECKING PROJECT IT IS CRUCIAL THAT YOU CHECK WITH LOCAL BUILDING CODES. IF YOU ARE UNSURE OF YOUR ABILITY TO DO ANY DECKING INSTALLATION CALL A LOCAL LICENSED CONTRACTOR.

Cut a groove and insert the flashing for your ledger on stucco installation.

Cut a groove and insert the flashing for your ledger on stucco installation.

  1. Cut a straight line an inch into the stucco with circular saw.
  2. Insert flashing into the groove that was just cut.
  3. Predrill holes in the stucco and ledger.
  4. Fasten ledger to the house with lag screw.
  5. Seal the top of the flashing with silicone caulk.

    After the ledger and flashing are installed, it's important to seal the flashing.

    After the ledger and flashing are installed, it’s important to seal the flashing.

After completing these steps you will have a sturdy ledger board attached to your stucco wall. Ensure the caulk is completely dry and sealed. Lag bolts should be tightened but only as tight as the socket wrench lets you. Do not over tighten lag bolts.

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2 Responses

  1. Aluminum flashing will corrode or impact the green pressure treated lumber. What is replacement for aluminum flashing with green pressure treated lumber? Also – what about the use of a peel & stick protective strip across the length of the ledger board BEFORE setting the flashing on the board? Would that be sufficient protection between the flashing and green pressure treated wood? And, I see you use a calking. Would that not erode over time between the stucco and the sliced cut into the stucco? What about the idea of using the peel & stick OVER the flashing coming out of the sliced stucco wall? Wouldn’t that be a better protective water barrier over the long term vs a caulk?

  2. This is absolutely wrong. The stucco should be cut away. The ledger must be bolted to the framing because the stucco isn’t structural and you’d be putting the load on the bolts.

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