though the code doesn’t mention it, the plastic deck2wall spacers can also be used. enter ledger-space with structural screws in 2013 decks unlimited (maker of the deck2wall spacer) had testing done by washington state university using the original deck2wall spacer with lag screws and the new deck2wall sws spacer with simpson strongtie’s
hey all, i'm familiar with attaching the deck ledger board with either a bolt through or lag, but i've never used spacers behind the ledger. i've seen others that have done that; why would you use that, and what are the pros and cons? this is all assuming proper construction, attaching correctly/sufficiently, flashing, etc, etc.
i've used spacers on a ledger board once, the reason for it was because it was a log cabin. i had to be careful attaching because the top half of the ledger was a wood stud frame with log siding. the bottom half were solid logs.
properly installing a ledger board for your deck is one of the most important structural components of building a safe and strong deck. these 18 articles will teach you how to install flashing and bolt the ledger connection to the house rim.
deck2wall® spacers (d2w) are polypropylene spacers designed to be installed between a deck and house. this allows water and debris to ﬂow between the ledger and the house, promotes circulation and drying, and helps prevent rot.
any water trapped behind the ledger can induce rot, if not in the ledger itself "a ledger board has no point except to transfer loads from the deck to the (at house and at edge of deck) then no ledger should be used.
no ledger board should be installed with siding between it and the rim joist of the house. “in my opinion,” he says, “a ledger board needs to be attached to the rim with lags or thru bolts. a pair 3 x 3 x 3/16 galvinized bearing plates make great spacers. the ledger should be protected by a flashing, with the siding overlapping the
to prevent rot, ledger board spacers are designed to provide an air space between the house wall and the ledger board. multiple stainless steel washers can be used, or a variety of engineered products designed specifically for this application. deck ledger board spacers are easy to install and provide a larger bearing surface area than washers.