Hometime Team
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Trans 1) Deck Overview Trans
2) Materials & Tools
3) Preparing Siding for Ledger Board
4) Preparing Ledger Board
5) Attaching Ledger Board
6) Digging Footings & Pouring Concrete
7) Cutting & Raising Posts
8) Installing Beams
9) Installing Joists
10) Installing Deck Boards
11) Building Stairs
12) Installing Railings

Attaching Ledger Board

Attaching Ledger Board Once the siding's cut and the ledger board's prepared, you can set it in place on the wall.

Make sure there's equal space left on the ends if there'll be skirtboards added on later.

Then tack the board in position with nails to hold it in place.


NOTE: Unless your sheathing has a moisture resistant exterior, the code may require that you cover the exposed sheathing with builders felt as a moisture barrier before installing the ledger board. Check with your local building officials.


Securing Lag Screws

Securing Lag Screws Use lag screws to secure the ledger board permanently to the house framing, generally 1 or 2 lag screws driven in between each pair of joists.

First, pre-drill through the ledger board and the sheathing and partway into the house framing.

Squeeze enough silicone caulk into each hole to provide a moisture seal. Tap the lag screws in with a hammer to bite into the framing. Then finish driving the screws with a ratchet.


Installing Z-Flashing

Installing Flashing Galvanized metal z-flashing is usually required to keep moisture from seeping down behind the ledger board.

First, seal any gaps with silicone caulk (like between the sheathing and the threshold) and run a bead along the sheathing to hold the flashing tight.

FlashingSet the flashing in, Sliding the back up under the siding first (you may need to loosen or remove a few nails to get it up there). Then push it down over the top of the ledger board.

If you use 2 or more pieces of flashing, be sure to overlap the joints by several inches and use caulk to seal the joints.


TIP: Flashing comes in a couple of sizes. Make sure the back's high enough to cover the gap between the siding and the ledger board and to ride up behind the siding about an inch.


Laying Out Footings

Layout footings


Use string and stakes or batterboards to lay out lines representing the deck and measure off those to locate the footing positions.

To get started, use a plumb bob to transfer the outside edges of the deck from the ledger board down to ground level.

Nail string to the siding and tie the other ends to wood batterboards or stakes set out beyond the length of the deck.


Using the 3-4-5 Method

Use the 3-4-5 method to set the strings square (at a 90 degree angle) to the house.

3 4 5 Method Mark a point on the string 3 feet (36") from where the string hits the wall.

Mark a 2nd point on the house wall 4 feet (48") from where the string hits the wall.

Measure out from the 1st point on the wall to the 2nd point on the string and move the string till the 2nd point is exactly 5 feet (60") from the 1st point on the house wall. Then the string is square to the house.


Marking Footing Positions on Strings and on Ground

Marking Footing Positions on Strings and on Ground Measure and mark the length of the deck on each string.

Tie a third string between those marks to represent the outside edge of the deck. Using the plan as a reference, measure and mark the center of each footing position on the stringsimage.

Line up a plumb bob with each mark on the string. Drop the plumb bob to transfer those marks to ground level. Mark each spot with a nail and a bright strip of tape or cloth.

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