most boards are available in 3 1 2 or 5 1 2 widths and 8, 10, 12, or 16 lengths. youll also need to know the joist spacing you are planning to use, most commonly 12, 16, 20, or 24. if you want a deck flooring price estimate, you can also include the price per board.
for example, if the finished decking should have a width of 14 feet and the desired board overhang is 1 inch on each side, the frame width should be 13 feet 10 inches -- 14 feet minus 2 inches
deck framing. these screws should be at least 1/2 inch in diameter if they will support the weight of the deck, and the point should sink at least 1 1/2 inches into the stationary member. thus, 4 inches would be the minimum length of a lag bolt used to attach a 2-inch board.
joist framing how to determine deck framing lumber sizes the rim joists are the joists that make up the outside of the frame. if the deck is fastened to a house or other building, the board that fastens to the house framing is the ledger board. the ledger board is another joist and is usually the same size lumber as the other joists.
4. board size: determine your desired board size. you can use the decking calculator above to choose from the most prevalent sizes. 5. expansion gap: these are small gaps between each board. you need these gaps to drain water. determine your desired expansion gap and enter into deck calculator above. 6.
a wooden deck is really nothing more than an outdoor floor. it consists of wooden boards laid over a wooden framework consisting of a ledger board -- a board attached to the house and defining the
dimensions. joist spacing also determines how thick your deck boards must be. joists spaced 16 inches on center will take both 5/4 and 2-inch deck boards which are actually 1-1/2 inches thick . however, if your joists are spaced 24 inches on center, or if you plan to lay the deck boards on a diagonal, building codes typically require 2-inch
if he were a professional deck contractor he wouldn't be confused about 5/4 decking which is probably used on 98% of wood decks. if he were talking about true 5/4 he would likely specify true 5/4. same as if you were looking for a 2x4. if you wanted true 2x4 you would specifically say that.
deck joist sizing and spacing. in general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. a 2x8 up to 12 feet; 2x10 to 15 feet and 2x12 to 18 feet. the larger the deck, the larger the joists. in typical deck construction, with a ledger on one side of the joist and beam on the other,
up vote 17 down vote accepted. 1x stock is fine if you have 16 inch on center joists, and the joists are themselves sized properly. using 2x stock over undersized joists does help make the deck feel more solid. if you have 24 oc joists, i'd definitely stay with the 2x decking.
2 thoughts on recommended decking board size mark morris may 5, 2014 at 10:27 pm please can to give me a price on,ipe decking 5.7m x 5.7m = 32.49m2 21 x 145mm smooth both sides with groove in edges for secret fixing, with fixings and oil and delivered to gl50 postcode
all lumberyards and home centers carry 16-ft. deck boards, but many also stock or can order 20- and 24-ft. boards, though they may cost more. full-length material allows you to avoid butting boards end to end, which can invite trouble; the ends of boards are more absorbent, slower to dry out and more susceptible to rotting, swelling and splintering.
so, for an 8 foot long 2.44 m deck, a redwood joist of grade 2 lumber would need to be 2 x 6 50.8 x 152.4 mm . a larger joist size would be perfectly acceptable, whereas a smaller size would not. the 2 x 6 joist size is suitable for most types of grade 2 lumber at 8 feet 2.44 m in length.