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OVERVIEW

 

The ledger is one of the most critical parts of your new deck. It attaches the deck to your house and it is also provides the reference point for laying out the deck for construction. Because of its importance, the ledger must be correctly positioned and fastened very securely to the house.

Pressure-treated lumber is the preferred material for the ledger. It is very sturdy and resists rot and pests. It should be secured directly to a header joist or to a masonry foundation for maximum strength. For installation into a header joist, you will use lag bolts. Masonry installation requires anchors that expand as the lag bolts are screwed in.


 

 

Skill Level & Time to Complete

  Time to complete this project depends on the size of the deck and the level of help available, the times listed here are for two people on a 10’x 30’ deck with the house defining two sides of the deck.
  • Beginner - 4 to 5 hours 
  • Intermediate - 3 to 4 hours
  • Advanced - 2 to 3 hours
 
  - When marking the height for cutting the siding to fit the ledger, remember that 2" x 6" lumber is typically only 5-1/2" wide.



SHOPPING LIST


Materials List
   Pressure-treated 2" x 6" lumber
   Lag bolts
   Washers
   Silicone Caulk
   Drip edge
 
Tools List
   4-foot level
   Circular Saw
   Claw Hammer
   Chisel
   Tin snips
   Socket set
   Drill
   Drill bits

 

1. Reference your deck plans to determine the exact location and size of the ledger board. You need to cut out the siding on your house where the ledger will be installed. On the side of the house, use a level and mark the siding to match the size of the ledger. The length of the cut out area will actually be longer than the ledger to allow room for the outside joists and any decorative trim you plan to install.
2. Set the depth of your circular saw to the exact thickness of your siding. You only want to remove the siding and leave the sheathing underneath intact. Cut around the marked area with the saw.
3. There are probably some areas, such as corners, that you could not get to with the circular saw. Use a chisel with the flat side facing the finished edge and cut loose any remaining areas.
4. Measure the length of the cutout area for the metal drip edge. It will need to span the entire length of the opening. Cut the metal drip edge using tin snips. Slip it under the siding. It should stay wedged in position for now.
5. Measure the length needed for the ledger. It will be shorter than the cutout. Mark the ledger lumber and squarely cut it to length. Put the ledger in position in the cut out area. Make sure you center it in the cutout area, leaving room (about 1-1/2 inches) for the outside joists and trim on each side. Tack the ledger in place with a few nails or screws and a screw gun.

 

6. About 1-1/2" from the top and bottom edges, drill pilot holes. Make each set of pilot holes about 2 feet apart from each other. Then, using a 1" paddle bit, retrace your steps and drill 1/2" deep holes to countersink the washers and heads of the lag bolts.
7. Using a socket wrench, screw in lag bolts with washers in each of the holes. The lag bolts should be about 4" long so that they go through the ledger, the sheathing and into the header joist.
8. Now that the ledger is securely in place, take silicone caulk and fill in the holes with the lag bolts. Then run a bead of caulk along the seam between the siding and drip edge above the ledger.

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