Laying Out the Deck Ledger Board
Before driving the structural screws to firmly attach the ledger, be sure to draw your joist locations onto the face of the ledger. The reason for laying out the joist locations is to prevent placing a joist on top of a structural bolt holding the ledger in place. In the case of a rectangular deck, you could lay out the joists on the ledger (on a set of sawhorses) before you install it. But if the deck will have a number of angles or is very long, it is easier if you lay out with the ledger installed on the house first.
SaveRead this article to determine your joist spacing. (In our example, joists are 16" on center to support 5/4 pressure-treated decking laid perpendicular to the joists.) Joists are usually installed “on center,” meaning the spacing number – usually, 16" or 12" – falls in the center of the joist’s thickness.
SaveAt the end of the ledger, the outside joist will butt into the face, rather than the end, of the ledger. Here, the ledger is marked for an outside joist that will be doubled. This double joist will require a double-concealed joist hanger. You cannot use a standard joist hanger at the end of a ledger, as it's cut flush with the edge of the ledger board. A standard joist hanger requires an extra 1.5" of space to nail to the ledger.
SaveWhen laying out after the ledger has been temporarily attached, measure and mark as described above. Use a framing square to measure and mark the joist centers along the ledger board.
SaveIf you plan on installing your railing posts on the inside of the deck frame, you will need to adjust the joist layout to allow space for the rail posts.
Attaching the Ledger Board to the House Rim
Learn how to properly install a waterproof ledger board using flashing and fasteners. Check out our step-by-step video and detail drawings.
Flashing the Ledger Board
You should flash your ledger before you install your decking. Over time, the house frame behind the deck will rot if it gets wet.
Ledger Board Fasteners
Compare lag bolts, carriage bolts and structural screws as deck ledger board fasteners. Take a look at our ledger board fastener spacing chart.
Pressure Washer Buying Guide
When it comes to cleaning your deck, it's important to choose the right pressure washer. Use this pressure washer buying guide from Decks.com to help with your decision!
What is Wet Rot and How Do You Treat It?
Wet rot occurs when water or high moisture levels cause wood to decay. Learn how to recognize the signs and causes of wet rot and how to treat it.
How to Ink Stamps from Pressure Treated Lumber
Ink stamps seen on pressure treated wood represents where the lumber came from and its grade. Learn a few tricks to remove this ink from your wood at Decks.com.
More Helpful Resources
Explore Articles by Topic
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Learn structural framing methods
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Build a covered deck to enjoy all seasons
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Care
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what if my deck has no flashing
Our inspector discusses what you should do if you deck ledger board isn't properly flashed.
Types of Deck Flashing
Compare stainless steel, copper and vinyl flashing materials for waterproofing your deck ledger board.
Removing Stucco Siding
Learn how to cut through stucco siding to prepare a house wall to install a deck ledger board.
How to Remove Scuffs and Scratches from Composite Decking
Removing scuffs and scratches can help make your composite deck look like new. Learn how to fix and prevent your composite deck from future scratches.
How to Prepare & Protect Your Deck for Winter
Preparing and protecting your deck for the cold weather is important to ensure the longevity of your deck, especially in cold climates. Learn how to prepare your deck for winter at Decks.com.
Best Deck Cleaner Options
Discover the best deck cleaning and brightening solutions for composite decks, wood decks, and more. Learn how to remove dirt, mildew, and algae with Decks.com.
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights