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See how others have transformed their outdoor spaces. Estimated based on a 12' x 12' deck; time will vary depending on the size of deck and complexity of the build. DuraLife high quality composite decking is manufactured to resist harsh weather conditions without compromising on aesthetics. 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”. Depending on the deck material and fasteners you select for your deck, you may have to add blocking at butt joints or seams. Composite Decking on 24" centers - Fine Homebuilding. 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. If you look under the deck, where the joists attach to the boards at the house and on the outer edge, there should be metal brackets holding the ends of the joists up. Choose a TimberTech composite or aluminum railing system to bring a complementary finishing touch to your outdoor living space. A 2×12 is almost twice as stiff as a 2×10. Advanced framing, or OVE (optimum value engineering) is a slightly different way to build than standard 16-in.-o.c. To really minimize wasted material but keep the whole house just as strong as it would be with other framing methods, you need to stack all the framing members, aligning them vertically so gravity loads are carried efficiently to the foundation. I’m not sure exactly when framing went to a standard 16 in. The most common joist spacings are 12, 16, and 24 inches on center. apart have 50% more load on them than rafters 16 in. These cookies will be stored in your browser only with your consent. apart, but in most cases this is easily handled by using a slightly deeper rafter. If adding additional framing, be sure to keep all boards level and in plane across the tops. 1 Jan 2011 Lighter in weight than wood-plastic composites, NyloDeck is available in lengths up to 24 feet and spans deck framing up to 24 inches on center. o.c., and it varied a lot, which didn’t matter, because nobody was using batt insulation, plywood, or drywall; sheathing was rough boards, and interior plaster was applied over split or sawn lath, at least in the Northeast where I’ve mostly worked. on center (o.c.) decking material 24 on center. is a habit left over from the early days of plywood and before engineered floor framing was invented. Search for a contractor near you who can install TimberTech products. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. apart have 50% more load on them than rafters 16 in. Lumber is generally cheaper per foot, if you can make use of shorter lengths. is optimized for modern methods and materials. The fact that your deck is 10' off the ground should make the job of putting in extra joists and hangers much easier then it would be otherwise if you are going to try to do it with the existing deck in place. The PT structure of my deck is in good shape but I'm wanting to replace the PT decking material. as well. These cookies do not store any personal information. Bob, Bottom line: your deck's supporting joists should be no more than 24" o.c. I think it looks terrible and the ends are all splitting because two boards share the same joist. Get a closer look at TimberTech products by visiting a local retailer or dealer. All of the tables are based on the use of #2 grade lumber. drywall, usually still a net savings if you include labor and material savings of less wall framing, with the added benefits of better sound and fire control. Limiting joist movement also helps prevent gapping between deck boards for a uniform finish. Start installing deck boards at the outside of the deck and work towards the house wall. I've never heard a specific term for this framing member; hopefully "sill jack" is clear. Ipe is heavy, so use enough support dunnage so that you stack does ... 5/4x4 24" on center 5/4x6 24" on center 2×4 24" on center 2×6 24" on center 2×8 24" on center 3 of 5. http://www.finehomebuilding.com/2005/11/01/the-future-of-framing-is-here, Expert insights on techniques and principles. Oil, Grease, and Food (That means it can be used at 24 in. The unique polypropylene and hardwood blend is stain and fade resistant, requires very little maintenance (simply wash with warm water and dish soap) and comes in a … Banish moisture and protect against rot with all-weather PRO-Tac™ Flashing and Joist Tape. The joists are set 24" on center as opposed to the 16" on center that were in the specs. Spark your creativity and start your personalized design plan. . o.c. Why is that? Owner is considering a composite deck surface whihc require 16" on-center joists. Can OVE be used with double wall, 12" exterior wall construction? This category only includes cookies that ensures basic functionalities and security features of the website. Once the deck surface is dry, apply a deck “brightener"* to the deck as directed by the manufacturer. We’re using 5/8-in. There are several reasons for doing this. It is mandatory to procure user consent prior to running these cookies on your website. Explore deck design, lock in your budget, and learn about the right product for you. While a particular joist may be level itself, the top of that joist may still not be in plane with surrounding joists. to 24 in. ... let you get away with more – reinforced with a layer of fiberglass on both the top and bottom, WearDeck boards easily allow for spans of 24 ... laying down the boards. I love the ideas presented here. Deck Brighteners contain oxalic acid, which will also remove tannins. Contact Deckorators Customer Service team at 800-556-8449 for commercial applications. Deck joist spacing should never exceed 16” on center (with the exception of MAX deck boards, which allow for maximum 24" on center). NOTE: Apply tape to a clean, dry lumber. In residential applications, Deckorators decking should be installed on joists spaced 16" on-center when the boards are running perpendicular to the support joists. A new joist may be slightly narrower/ shorter than existing joists. Feet. for nominal 2" thick SYP deck boards and the joist depth needed … Make sure you've calculated for all necessary materials. Cut a notch in the board to align with the correct height. Table 5 is for 40 psf live load and 10 psf dead load on 24 inch joist centers. spacing worked well with the plywood and drywall that were also becoming standard at that time, and fit well into standard 48-in. framing. framing, but you may need an engineer or architect to sign off on some of the other changes, such as a single top plate, and to specify appropriate fasteners and hold-downs. o.c. if you set the decking at a 45-degree angle). You may want to predrill the screw holes at the ends of the boards to prevent the wood from splitting. o.c.? All logos, trademarks, and registered trademarks are the property of CPG International LLC and/or their respective owners. There is more to it than just eliminating a corner stud and sill jacks. o.c. 2 and better are the best choices for deck building. Before you begin, make sure you're familiar with the different components of a deck frame. Making sure studs on long or tall walls are relatively straight and crowned in the same direction is important, as it always is. (Every part of the framing deflects to some degree; a big part of engineering and building codes is to limit the deflection to acceptable levels without wasting material.) Building codes and manufacturer specs usually list options for 24" o.c. The supports for the decking will be 24" center-to-center. That’s not really applicable in everyday use; it’s just another way it beats plywood. Custom deck design software, 3D outdoor living spaces. panels are rated 32/16. wall framing are a lack of nailing and more difficulty in achieving a perfectly flat wall surface on the interior. The 16-in.-o.c. See our Legal Disclaimer page for all legal notices. Following are tables for the two most common required psf loads for 16 inch joist spacing. AdvanTech is 28% stiffer than plywood, which equates directly to less deflection across a given span. To my experience, all decking, even wood with tend to sag on 24" centers over time. Real projects. The distance between two deck joists is measured in inches “on center”, commonly abbreviated as “OC”. Ensure the framing is held with exterior-grade fasteners; additional exterior-grade fasteners may be required to secure existing framing, as well as fastening reinforcement. Deck boards are typically 5-1/2 inches wide, so try to plan a deck size that won't leave narrow pieces at the ends. Common arguments against 24-in.-o.c. Table 6 is for 60 psf live load and 10 psf dead load on 24 inch joist centers. macsavvy, I have updated the text to read "sill jacks." Once you have a basic layout, bring it to Lowe's to have an associate put together professional deck plans and a materials list. This field is for validation purposes and should be left unchanged. I would love to use this method on the next two builds. I'd go with 16' and 8' instead so that you can stagger the joints to make it look better. stick framing, using similar components. Lumber quality also has a bearing on a board's strength. On 2018-02-28 by (mod) - deck's supporting joists should be no more than 24" o.c. NOTE: check for any structural damage before you begin building your outdoor living space. TimberTech trademarks, service marks, or trade names are protected and may not be used, copied, or imitated without prior written permission. o.c. Railing installation methods can affect the blocking required for your framing. Add a moisture-resistant shim to raise it to correct height. Following are tables for the two most common required psf loads for 24 inch joist spacing. o.c. The joists are on the on the 20 ft side meaning i need to accmodate 21ft 2 inch boards. WHY BLOCKING MATTERSSolid wood blocking helps reduce up or down movement and the twisting of joists. Deck joist spacing should never exceed 16” on center (with the exception of MAX deck boards, which allow for maximum 24" on center). DOUBLE CHECK YOUR LEVELING Please ensure your joist, blocking, and any added framing are level and in plane with each other. Replacing Deck Boards. What Does “On Center” Mean? for subfloors.) Inspect framing for contraction of structural lumber and ensure all fasteners are sound and showing no signs of corrosion. How Many Deck Boards Do I Need? But opting out of some of these cookies may have an effect on your browsing experience. Zip sheathing can typically be installed either vertically or horizontally. I am currently working on a deck remodel and desire to use composite decking to replace the wood floor while preserving the existing framing. TimberTech® PRO-Tac™ Flashing and Joist Tape, String line (to check that framing is level and in plane across the tops), Replacement lumber if needed (if required, generally at least 2" x 8"), Fasteners (exterior-grade fasteners for wood or wood composite decking). For a more rigid feel, 12” or less may be preferred. The deck is about 12 years old and some of the joists have to be replaced due to rot. BEFORE YOU BEGIN, make sure your new or existing framing is structurally sound. adding more joists). Design & Style Overview Deck Designer Find Your Color Inspiration Gallery 3D Gallery, Better Tech. Use exterior-grade fasteners to fasten through the outside of the joist. Our best-in-class warranties. Ⓒ 2020 AZEK Building Products. Stagger butt joints as much as possible for a nicer appearance. The worst mistake I've ever made building is 24" walls. For decks with 16-inch spacing, measure and mark each joist that is at 48 inches. floor framing, as floor stiffness has a big impact on how solid a house feels, even if structurally there is no issue. For example 2x6 materials can usually span 24” without any noticeable deflection and still support a significant load. I am going to redeck a 12'x14' deck that is 10 feet high (level surface underneath, so ladder use is no problem). o.c. I’ll admit that it took me a while to make the jump to 24-in.-o.c. One part I don't understand is that, despite the drawings, the floor joists were said to be less than 24" O.C. While studying engineering in college, I learned how depth-to-width ratios of framing members affect their strength. Spacing of 24 in. Become a member and get unlimited site access, including the On houses built before that, framing layout was usually more than 16 in. Using I-joists, our subfloor spans are actually even less than 24 in. as it is at 16 in. Use calcium chloride or rock salt to melt the snow and ice from the deck surface. Innovative technology, meet sustainable outdoor living. Establish a pattern The Outermost deck board sets the pattern and layout for this three-sided deck, so Ben establishes screw placement every 16 inches on center over the sleepers. o.c., but based on the various houses I’ve torn apart, and a little bit of reading, I’d say that it happened gradually over the course of 50 years or so, and finally became ubiquitous after World War 2. Deck Board Spacing. Real people. The nailing argument seems odd to me—just put blocking where you need it for kitchen and bathroom cabinets and fixtures and other places that most framers block, even with 16-in.-o.c. Look for high/low/uneven joists using a tight string line. The current boards are staggered 12 or 9ish ft boards that are butted up each other. 24" o.co Decking Angle. What about the roof sheathing at 24 in. Confirm your design and planned orientation of your deck boards before you begin deck joist work. Is it ok to leave one or two that are less than 16 inches apart. Refer to the appropriate installation guide for the line of TimberTech decking you've selected. Start your subscription today and save up to 52%. Table 5 Just fill out the fields below for a free PDF download of this guide. By having all the framing at 24 in. The frame must be securely fastened to the home and/or to a properly secured post and beam frame. With OVE you still want cripples on layout, in most cases; it's just the ones that most builders place at both ends of every sill that don't serve a purpose. On another section of deck, the framing is different, and these auxiliary legs from the side are screwed into the front to butt the side of floor joists. One brand, three ways to Go Against the Grain.® Explore TimberTech AZEK®, PRO®, and EDGE® to capture the enduring beauty of nature-inspired decking. Try to avoid wrinkles or air bubbles during application. Wood Plank - If you have a wood plank roof deck, it is not recommended that the wood planks exceed eight inches (8") in width due to their propensity for warping.. Plywood - If you have a plywood roof deck, make sure that you have at least 15/32" (or ½") plywood thickness if the rafters are set at sixteen inches (16") on center. without issue is easy. Part 1 - 12" Joist Spacing. 12" o.c. The strength and stiffness arguments are the same as for rafters, rarely an issue except on very long spans or when depth is limited. The short answer: shorts. framing, and use picture hangers or drywall anchors made for the purpose, when needed. The floor joists must be 16 inches on center. One solution is to use 5/8-in. I probably would not go 24 in. Remove any screws or fasteners that may be protruding from the surface of the joist. Boards graded No. It’s time to Go Against the Grain®. Use a water management system such as a drip cap or flashing wherever framing meets the home to move moisture away from the home and deck. Do I just need to make sure that it's no more than 16 inches on center? Must be pre-drilled. Our project experts take you step-by-step. Video: How to Install Hidden Deck Fasteners Because the FHB House is in a high-wind zone, our engineer wanted all seams blocked, but didn’t care which way the sheets were oriented. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. A new joist may be slightly wider/ taller than existing joists. Here is an article, by a well-known engineer, that explains some of the details in more depth: http://www.finehomebuilding.com/2005/11/01/the-future-of-framing-is-here. © 2020 The Taunton Press, Inc. All rights reserved. Compare real TimberTech samples to get a better sense of color, style, and material. tongue-and-groove sheathing, rated 40/20; it can be used for rafters up to 40 in. Joists must be level and in plane for a flat surface. How can deck patterns save me money? Lock down other important considerations, like deck size, railing, and more. • Stack deck boards with the longest lengths on the bottom, building to the shortest lengths on top. Get-Prices Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Different deck board patterns can require extra blocking / framing (for example, picture frame borders or diagonal inlays). and stacking framing members so we can use single top plates, we reduced the overall material use significantly, maximized energy efficiency, and still had a structure that exceeds engineering requirements. The beam is approx. on center (12 in. Learn more about the basics of deck framing and more info on how to frame a deck in the Deck Framing Guide and learn the specific deck part names in the Glossary of Deck Terms and Lingo. Those are maximum values; to span 24 in. CincinnatiHouseBuyer, any licensed structural engineer will be able to determine what changes need to be made to go with OVE. Create your design so that the railings are clear of windows and out-swinging doors. When you’re ready to build, download the free project guide. Huber’s Zip System sheathing, which we are using on the FHB House, has a span rating of 24/16 for 7/16-in. Please consult all appropriate installation guides. We believe in beautiful homes — and that includes the planet. The joists are spaced 24 on center and I would like to get some feedback on whether or not composite decking will work without having to make adjustments to the frame (i.e.

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