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Deck ledger board bolt spacing.

Robert Jones

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Please help me with my laziness. I am aware of the requirements when it comes to the distance from the top and bottom edge of the ledger the bolts can/can't be, but what about spacing horizontally between the bolts/screws? Is their a maximum distance between them? In this pic you can also see that they aren't staggered.

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In the absence of stamped drawings, as an AHJ, I require two, evenly spaced, 1/2" washered lags or bolts per joist bay staggered in the top and bottom third of the ledger. Alternatively, an appropriate number of Ledgerlok (or equivalent) rated screws is acceptable.

As a home inspector, I quote the article that Egbert posted.

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