What size anchors for deck ledger board?
A 2X8 ledger is fastened to the concrete foundation wall using ½”X4” sleeve anchors, or other concrete anchors. Anchors should be installed at staggered heights in between joists.
What size bolts to use on deck?
Most decking screws are 8-gauge and, while 2 1/2 inches is the minimum length needed to hold decking boards to the joists, 3-inch screws are commonly used to provide extra holding power against the upward pressure of shrinking or warping boards.
How long should ledger board bolts be?
Your bolts or screws should be long enough to extend at least ½” past the board you are attaching to. They are usually installed in a zig-zag pattern.
What size lag bolts do you use on a deck?
Hex-head 1/2-inch hot-dipped galvanized bolts and 1/2-inch lag screws with standard cut washers (A) are the only two fastener options listed in the IRC for attaching deck ledgers.
What is the most acceptable fastener for connecting a deck ledger to a rim joist?
lag screws
Traditionally, lag screws have been the most common method of attaching decks to buildings. To properly attach a deck ledger using 1/2″ lag screws, 5/16″ holes need to be pre-drilled through the ledger and rim joist. After that, a 1/2″ hole should be drilled through the ledger only.
How do I know what size lag bolt to get?
In general, the lag bolt you purchase should be 1/4 inch shorter than the combined width of the pieces you’re attaching. In most cases, 5/16 inch bolts will be used.
Which is the most acceptable fastener for connecting a deck ledger to a rim joist?
Can you attach ledger board with lag screws?
Traditionally, lag screws have been the most common method of attaching decks to buildings. To properly attach a deck ledger using 1/2″ lag screws, 5/16″ holes need to be pre-drilled through the ledger and rim joist. After that, a 1/2″ hole should be drilled through the ledger only.
How much weight can a 5/16 lag bolt hold?
If a lag screw with a 5/16-inch shaft is installed correctly, it can withstand pull-out, or withdrawal, of up to 212 pounds in close-grain hem, fir and redwood, and up to 266 pounds in larch Douglas fir, according to information from the American Wood Council.
Can I use screws instead of lag bolts?
Structural screws are designed to be a replacement for lag screws, so they can often be used interchangeably. Each type has its own advantages and drawbacks. For instance, a user needs to drill two holes for every lag screw to prevent the wood from splitting.
Can I use a 2×8 for a ledger board?
He can add an additional board attached to the ledger and use lag screws as indicated. Using 1/2″x5″ lag screws to screw through the existing ledger board and into the floor band would work and then the new 2×8 would be considered part of the ledger instead of just a board secured to the ledger.