Similar to guards, if stairs are to be hung from the side of an upper-level deck, 2x10 as a minimum is recommended, as it will exceed the depth of the first step. 2x6 is iffy and may not meet minimum code. Some deck boards can be shipped to you at home, while others can be picked up in store. Cedar vs. PT vs. Composite and 2x6 vs 2x10 - Deck Design 25 Aug 2014 . How much do deck boards cost? I agree with Marksr, that 2x6 would be minimal. Use a 4x6 rather than 2-2x6's for your beam. If you use 5/4 decking, joists must be no farther apart than 16 inches. In this case, you should have used two 6" treads instead of one 12". There are hundreds of nails! Similar to guards, if stairs are to be hung from the side of an upper-level deck, 2x10 as a minimum is recommended, as it will exceed the depth of the first step. The joists were spaced 16" on center and overhung the beam assembly by 2' giving me a deck 12' wide and 28' long. Started on the outside edges, and worked inward. Most deck boards range from $10 to $4,000 in price. An 8 gauge, 2.5” coated deck screw is most commonly used when fastening deck boards to joists. A quick trip to the local hardware store can leave you feeling like a deer caught in the headlights. Begin by cutting your posts about 1 foot longer than needed. have room to lengthen the run a couple of inches if necessary. A boards strength when it stands vertical edge up not laying flat so a wide 2 inch board will split. The bigger you make your deck, the more you ask of the framing timbers that hold up the deck's structure, and the … I just want to put up two 6x6 posts with Titan Wood Post Anchors, either 35 or 70 apart, I am building a 10'x12'deck (not attached to a ledger board). Both pine and standard "white wood" lumber work well for deck construction. I can use either the 2 board or 3 board option, so if you could tell me the span for both sizes and placement that would be great. © AskingLot.com LTD 2021 All Rights Reserved. What are the advantages and disadvantages of doubly linked list? kevin says. No, the double ledger board is attached to the rim joist (which sits on the foundation). If you identify a crown in the board, you should always install it upwards. . If you go with double 2"x12'" members (Douglas Fir #1 grade) spaced at 16" o.c. What are the shipping options for deck boards? If you are face-driving deck screws, it is acceptable to “self-countersink” them. If they are too curled to do this, replace then with 1" x 6" or 2" x 6". As such, pre-cut cedar stringers often use 2×10 boards. Can I build a new deck that is 12' x 14' using all 2' x 10" boards including floor decking? How? How far can a triple 2x6 beam span? 0.91" of deflection at mid-span under Total Load. Most of the fastening is done once the boards are tacked down. When building a deck with 7-ft. joists, you know the beam can span somewhere between 7-7 and 8-0, but you don’t know exactly where. Some deck screws even have a little cutter head built into the screw, to facilitate countersinking. 1. This type of cured lumber can be used for all kinds of things. Perhaps your supplier can refer you to the manufacturer to see what they recommend. There is certainly no problem using the 2x10s for any of the structural framing of the deck. She would like it to be as high as possible, with. Can you use 2x10 for deck boards? Using 2x10 treated lumber for decking is another matter entirely. Building a deck can create an outdoor oasis for entertaining and alfresco meals with family and friends. They are the preferred screw because you can fasten pressure-treated decks and they will not corrode or loosen over the years. There’s no need to use 2-by-10s for joists if the deck extends just 10 feet from the house. Every material has structural limits. 1,200 lbs. if you bollt 2x beams together. Yeah, you can use 2 10 footers. But Guy #3 says no way, he'd use 2x10's, so his quote is way more. Five basic components make up any deck: decking, joists (also known as a ledger when attached to a house), beams, posts, and footings. Using 2x10 treated lumber for decking is another matter entirely. The issue was that typically creates a large point load on the rim joist of the house, so to reduce that they requested a "double ledger board". Keeping You Safe The No. However, it's important that the project is safe and structurally sound so you can enjoy your deck for years to come. @LeeSam the ledger boards are 2x10. An 8 gauge, 2.5” coated deck screw is most commonly used when fastening deck boards to joists. Use 10d (3”) or 16d (3½”) nails for framing, 10d or 12d (3¼”) for 5/4 deck boards and 16d for 2-inch planks, and 6d (2”), 8d (2½”) or 10d for railings. An untreated 2x10 will measure 9-1/4 inches, a PT 2x10 may only be 9-1/8 inches wide. Find Trex composite deck boards at Lowe's today. Join in and write your own page! Framing: Set aside your straightest joists and use … As such, pre-cut cedar stringers often use … Perhaps your supplier can refer you to the manufacturer to see what they recommend. There is certainly no problem using the 2x10s for any of the structural framing of the deck. Joists support the decking boards, which are fastened onto the joists from above. 1. Joists spaced 16 inches on center will take both 5/4 and 2-inch deck boards (which are actually 1-1/2 inches thick). Deck Cantilevers. How many footings do I need for a deck? For upper-level decks, 2x10 is recommended as the minimum size to use for strong guard post connections. Because deck wood is exposed to weather, which can cause wear that impacts the structural integrity of the lumber, most pre-cut pressure-treated deck stair stringers use 2×12 lumber for both long and short spans. it works according to the the residential deck guide. The site suggested using a … per square foot. And if there's a foot or two of bad material, you can cut out the defect, then use the resulting two shorter pieces for a smaller area of the deck, stair treads or landings. Take a few minutes occasionally to pull out the leaves, twigs and other debris that gathers between deck boards, especially … . Best way to start is by discussing the deck design with your local code enforcement official. Join in and write your own page! When installing on an angle, joist spacing should be on 12” centers. We are building a 13'x16' deck, and I would like to use 2x10 or 2x12 joists in order to span longer and cut down on the need for screw piles. In order to reduce the point load from a beam meeting on the corner of the house, the inspector asked that I use a double ledger board and move the footing closer to the foundation. 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 material. Position the members and fasten them with carriage bolts. it works according to the the residential deck guide. 2x6 is iffy and may not meet minimum code. On my trailer (68" wide), I used 2 X 10's. With 2x10 joists 16 OC the max span is 13'7" so if you put the beam at 13' you would have 3' over cantilever. What are the names of Santa's 12 reindeers? Can you tell me the location so I can look at snow loading for teh exterior beams. Hereof, can you use 2x10 for deck boards? So when a company says they guarantee a composite board … My plan was to pour concrete footings, then run doubled up 2x8 beams setting on the footings, My wife is a stroke victim, and she wants this deck to be as easy as possible for her to walk out on. Deck Cantilevers. Similarly one may ask, should I use 2x8 or 2x10 for deck? For best deck fascia board results, use the TOPLoc fascia fastening product developed for the specific decking line you chose (capped polymer or capped composite). However, lumber prices are rising and therefore it is more common to see 5/4”x6 deck boards that should not span more that 16” and usually 12”. As far as lifespan, according to a recent study by Freedonia, decks made from pressure-treated lumber and softwoods will last an average of 10 years, when maintained appropriately, including regular waterproofing. You may be able to remove the treads, cut them in half and re-screw them to the stringer. If you've replaced an old deck, you've got some sought-after lumber on your hands. Plastic based materials probably expand and contract even more than wood, so I'd be afraid to use them in that way. Overall, conventional decking profiles should be installed such that when seasoned, will have gaps between 1/8 and 1/4 of an inch. Sometimes you can straighten warped boards. This means the installed deck boards should have at least 1.75 to 2.75” overhang before the fascia is installed. According to the Deck Joist and Joist Sizing Chart, 2-by-6 joists on 16-inch centers will span 9 … I oil my deck once in the spring, and that's it. Shop composite deck boards and a variety of building supplies products online at Lowes.com. No more rot from PT plywood. A gap of 10mm between deck boards and external walls of adjacent buildings is recommended for drainage. To solve the puzzle, begin with what you can’t change: the size of the band joist that is already part of the house that you're building on to. With that said, I'd go 2x8 as you have illustrated with a beam in the middle. A double 2x12 beam can span 12 feet; a (2) 2x10 can span 10 feet and so on. you won't be able to use every bit of every board typically. Once you know your decking material and its maximum recommended span you can then refer to the deck Joist Span Table below. The loading includes the weight of the structure and other fixed weights which are defined as the dead load. We are building a 13'x16' deck, and I would like to use 2x10 or 2x12 joists in order to span longer and cut down on the need for screw piles. In short there's no one right answer to “how much can my deck hold?” However, one rule of thumb to keep in mind while answering the question is that the answer commonly is that if a deck is properly designed, it's built to hold 50 lbs. I'm using 2x6 joists, and double 2x6 boards for beams. In the west, you will see more more hemlock fir. Decking made of 2x4s or 2x6s can span up to 24 inches. So he has two rot-fighting tips for deck owners and builders: Popular Videos. Sometimes you can straighten warped boards. Recommended Beam & Joist Spans for Deck Framing. So when a company says they guarantee a composite board for 25 years. Simply click here to return to. When supporting joists that span 12 feet with no overhang beyond the beam, a double ply beam can span in feet a value equal to its depth in inches. … The larger the deck, the larger the joists. Once you know your decking material and its maximum recommended span you can then refer to the deck Joist Span Table below. Deck joists have a different maximum span length depending upon the size, spacing, and framing material that you're creating your deck with. September … Simply click here to return to Framing and Decking Forum. I am tearing down a large deck and have an abundance of 2 x 10 treated that are in excellent shape. Also know, what size deck boards should I use? If the span is only 8 ot 9′ then yes, they will work. For deck framing, structural wood screws such as Simpson SDS 1.5” screws work with joist and stringer hangers, as well as post/beam brackets. Why is it difficult to change organizational culture? I am looking to install privacy screens on my concrete patio. side of the end stringers, as would using 4 stringers, but you'd be OK. Instead of stacking three beams on top of each other, sandwiching deck posts between two 2x10s is another common way to build a beam. It's essential that you calculate the screw length correctly or the boards will split. Most floor loads would be a minimum of 2x8 @ 16" oc and most preferbaly 2x10. When decks are suspended in the air, this is particularly important. lay the first 10 foot board in the middle with 5' on each end left. But you’ll 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 … TOPLoc for PRO ® & EDGE ® Use TOPLoc for PRO & EDGE hidden fascia fasteners and … Adding these bolting requirements to a step-down deck makes lower the bolt impossible to locate legally. Section R507.6 calls for the built-up beams to be fastened together with a minimum of 10d nails spaced 16 in. StructuralEng : Ok. Give me about 20 minutes to run some numbers. 2x6 is thicker and is stronger, but is also more expensive. Re: 20 foot clearspan beam size In that case, you need something like a 12-16" GLULAM or LVL to span the 20' and can use simple 2x8-10 dimensional lumber 16"OC as floor joists. And if there's a foot or two of bad material, you can cut out the defect, then use the resulting two shorter pieces for a smaller area of the deck, stair treads or landings. Every material has structural limits. The maximum allowable span between the frames with this type of board is 6’. I'm building a new deck and got my plans approved for the city. But you’ll 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 … In general terms, joists spaced 16 inches on center. 2x10 ledger board because it will not make full contact with the rim joist and therefor leave a weak spot at the bottom of the ledger. You don't state where you are located. He sees it all the time: deck joists rotting from the top edge down because the deck boards and debris keep them damp for weeks after rain. Spacing between deck boards provide a few critical functions. can you use galvanized washers for spacers to build up beams to 3.5 inches for sitting on 4×4. 2x4s are never ok for floor joists! The distance you can span a 2-by-10 joist without additional support depends on the species and grade of the wood, how far apart the joists are and the expected load on the joists. Both TOPLoc for PRO & EDGE fascia fasteners and TOPLoc for AZEK fascia fasteners are color-matched for a seamless look. I have the deck plans all laid out, and am in need of a 2x10 ledger board under the door to attach the deck to. With that said, I'd go 2x8 as you have illustrated with a beam in the middle. You used the wrong sized lumber. Can 2x4 be used as deck joist? It is a real solid deck with no trampoline … Beside above, how far can a 2x10 span without support? Click to see full answer. Deck boards: If a deck board isn't perfectly straight, you can work the bow out of it as you nail it to the joists. You need a different type of screw for each part of your deck. When you start the installation, you have to secure each board down with a couple of screws. Next bolting will req. boards are cheaper than time. Cedar vs. PT vs. Composite and 2x6 vs 2x10 - Deck Design 25 Aug 2014 . The existing 2x8 also only goes to the end of the house, which is 11'. Total height of low level ground level deck. walkereng : You can use double 2"x10'" members (Douglas Fir #1 grade) spaced at 16" o.c. © 2004-2021 Decksgo.com. Preparing to put on the ledger board for the deck that is part of my addition. Cutting this out of 2x10 lumber leaves 2 7/8" of material. 5/4x4 and 5/4x6 decking can be installed with joists on 24” centers. yes, I suppose you can do that. Usually, the first thing to go are the boards, which can be replaced easily enough. (Clinton, OH). kevin says. Check with your local code official, or simply drop back to the shorter value in the table and assume the allowable span is 7-7. You would be better to check the national building code - joist spacing - before you buy your lumber. Use 2 small 5' pieces at the ends. And F clamp can even be used to pull the boards down as they can lift when pushing them over. For a truck deck or trailer you don't want to use anything wider than a 2x8 myself I will only go as wide as a 2x6. The house builder had included a ledger board already attached to the home upon building, but used a 2x8. What are the shipping options for deck boards? Cedar, which is also an option for deck stairs, is stronger and more durable than pressure-treated lumber. There isn’t a one-size-fits-all answer. I need that to be 13', and then have the joists span the 16'. In fact, the maximum step down for a 2x10 ledger bolted to a 2x10 band joist is 3/4 inch if the bolting requirements are followed. by Ron The larger the growth rings the more unstable the lumber is. I would not recommend them for decking. For upper-level decks, 2x10 is recommended as the minimum size to use for strong guard post connections. A portion of it is 24" high, the rest will be 8" high. this doesn'/t take into account the material lost in cutting and gaps needed if any. Another option are 2 X 8 rafters spaced 24 inches o.c. There is certainly no problem using the 2x10s for any of the structural framing of the deck. But Guy #3 says no way, he'd use 2x10's, so his quote is way more. It will be stiffer. Using 2X stock over undersized joists does help make the deck feel more solid. if everything is perfect you would need 53 pcs of the 2*10*8'. For Kiln Dried decking set spacing between boards at 3/16” for 4” and 1/4” for 6” decking. Joist hangers are used to attach the ends of joists to the face of a beam or a ledger board. While the screws do pull down the boards when pre-drilled, it doesn’t always work fully in extreme differences. What is internal and external criticism of historical sources? It's easy to do. For deck framing, structural wood screws such as Simpson SDS 1.5” screws work with joist and stringer hangers, as well as post/beam brackets. In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. The required joist size will probably be listed in the building code for your area. How far can a 2x6 Rafter span without support? Most treated boards used for joists(2x12) will be incised during the pressure treatment process. The live load includes furniture, people, appliances and snow on the roof. If you have ever looked up at a deck from underneath, you’ve seen joists, which are dimensional lumber, (often 2×8’s or 2×10’s). But my friend wasn’t. When decks are suspended in the air, this is particularly important. I would not recommend them for decking. He sees it all the time: deck joists rotting from the top edge down because the deck boards and debris keep them damp for weeks after rain.