you could also attach a 2x4 or 2x6 on edge, underneath the outside edge of the deck boards, with a couple of screws through each deck board. this would give the outside ends a lot of stability as far as any individual board trying to warp or twist. plus it would give it a finished trim look.
5/4 decking overhang? i always use 2x6 for the decking. lasts longer, no warping and looks better i think. 2009-apr-25 1:02 am. to mkt624. if at all possible, it's best if the deck boards
shop deck board 2-in x 6-in treated lumber in the lumber and composites section of seven trusts.com. find quality treated lumber online or in store.
so the question is, 'how much can we cantilever the far ends of the joists?' looking at the table below, we see that 2x6 floor joists can be cantilevered up to 2 feet and 6 inches 2'-6' when the joists are spaced 16' apart. the table also indicates that we need to keep the length of the joist that is not cantilevered between 4'-0' and 6'-6'.
when choosing 2x6 joists, the corresponding ledger board must be a 2x8 minimum. see page 13 for more information. guards cannot be attached to decks framed with 2x6 joists. see page 20 for more information. joist spacing a inches on joist size llowable span a overhang table 2: maximum joist span length
maximum joist spacing for decks southern pine deck joist maximum spans no cantilever with cantilever* *joists may cantilever up to ¼ of the actual adjacent span. for example, a 2 x 12 joist placed 16 oc. spanning 16-6 between supports may cantilever up to an additional 4-1 ½ for a total maximum length
the length of the boards are 13.5 feet and they are 2x6's and the joists exceed the posts 3 feet at the end. dh is over 200 pounds and could jump on the corner with no problem. just want to be sure before putting on the deck boards.
when installing decking boards, be sure to allow for enough overhang to cover the fascia board and whatever additional amount you prefer. a one to two inch overhang beyond the outer fascia board is sufficient. this means the installed deck boards should have at least 1.75 to 2.75 overhang before the fascia is installed.
deck cantilevers. section r507.5 notes that deck joists can cantilever up to 1/4 of the joist span. but youll notice when you look at the portion of the span table for joists with cantilevers that the joist span for decks with a cantilever is often less than the span for the same sized joist without cantilevers.
just imagine what would happen if you stepped on decking extended, for example, 12 inches past the last joist. however, it isnt easy to find information on how far it is allowable to extend a board. to complicate matters, the allowable overhang just like joist spacing varies depending on the decking material.
search for images of overhang on porch floor decking. how to install porch flooring : how-to : diy network - similar to how to install porch flooring : how-to : diy network cut the boards, allowing at least a 3-inch overhang. this will be trimmed off after the porch decking is finally installed.
residential decks information sheet joist span based on no. 2 or better wood grades. design load = 40 ll 10 dl, deflections=l/360 ponderosa pine southern pine western cedar
before installing the last two deck boards, trim off the ends of the ones you have already installed. to do this, make a mark 1 1/2' from the framing on the last 2x6 that you installed, and another mark 1 1/2' from the framing on the first 2x6 that was installed see diagram b .stretch a chalk line between the two marks and pop a line across the top of your decking.
there are several factors that determine the maximum joist cantilever overhang that is permitted for a deck. learn about deck cantilever and overhang rules and codes at decks.com.