Deck Joist Sizing & Spacing | Decks.com | Decks.com by Trex When stacking decking bundles, supports (dunnage) should start approximately 8-in (203 mm) from each end and be spaced approximately 2-ft (0.61m) on center. Please Note And while it’s important to have a deck that’s aesthetically pleasing to you, the most vital part about your deck is making sure it’s structurally sound. *��t9���+@� 0�'] As an example, if your deck will secure lots of daytime sun, be prepared for fading and regular re-staining of pure wood decks. Deck Joist Cantilever Rules and Limits Deck Joist Sizing and Spacing Deck Joist Water Protection Decks vs Patios: Cost, Pros, Cons, & Comparisons Extending Your Current Deck Framing a Deck Parallel to a House How to 3 Trex ® Installation Guide In your hands, you’re holding everything you need to begin building with Trex Decking & Railing. The use of a hidden fastener allows you to attach your Trex boards securely to the joists without using nail or screw heads to mar their look. Terms of use. How far apart are floor joists placed? Using a scrap piece of wood as a guide to locate the first joist in the situation of an angled corner. Composite Deck Board Spacing Trex Joist Installing Boards Decking inside sizing 2592 X 1944 In the process of comparing quotes between corporations, it is vital that you take into account the following points. » Note, Trex fascia has to be gapped width-to-width and end-to-end the same as Trex decking. Gapping is necessary for drainage and the slight thermal expansion and contraction of Trex decking boards. From web,site, the minimum joist spacing is 16". Protect your substructure Trex can be installed over timber, steel or aluminum substructures with joist centers at a maximum of 400mm apart. (on center) for standard straight composite decking installation. What is the proper placement? If you’re planning to replace old wood decking with PVC or composite, measure the deck joist spacing first. Most deck joists are centered 16 inches apart, which is the maximum deck joist spacing for most low-maintenance decking. 1 Box covers 50 square feet and 1 Bucket can cover • Install solid wood blocking between each joist, placed in rows at maximum every 4’ - … For a more rigid feel, 12” may be preferred. On center means that the measurement should be taken from the center of a joist edge to the center of the next joist edge. Some builders reduce joist spacing to 12" on center to strengthen the deck frame or to increase maximum allowable joist spans. 84 0 obj <>/Filter/FlateDecode/ID[<37EFB280B3534340BC9FD0EFFA09A4FC><8452305C91CD7441BEE4BA8BB397FEA5>]/Index[68 27 96 1]/Info 67 0 R/Length 92/Prev 120002/Root 69 0 R/Size 97/Type/XRef/W[1 2 1]>>stream Gapping also allows for the shrinkage of the wood joist system. We can recommend the Trex Protect Joist Butyl Tape, it protects the top of the joist, beam, rim joist and ledger board from development of rot and wood decay. For a more rigid feel, 12 inches on center. Copyright © 2021 Trex Company, Inc. All rights reserved. Enjoying your deck on a beautiful summer day is the perfect way to entertain guests outside or just unwind and relax. Install blocking between each joist every four to six feet to reduce Adjust support blocks (dunnage) accordingly if … Can You Use Hidden Fasteners On Trex Decking? That’s why stretching a string across the joist spacing for composite deck boards can help detect spots that may be higher than others. For best results, refer to our wood and composite deck joist span table. This guide will take you through all the steps you need to create a beautiful outdoor living space that fits Build your dream deck with Trex, the world's best high-performance composite decking brand. Drainage, access, and airflow are critical. Water must be able to flow through and away from the deck. One part of the deck has 18" joist spacing on center … A 2x8 up to 12 feet; 2x10 to 15 feet and 2x12 to 18 feet. h�b```f``�f`a`�3g`@ �rl``���c�����"�������R{.B ������ �A1�~�%�m��M2�'�����~��[�� ��i�o �D�@Z��i���tn��i �����. Most common is 16 inches on center. 94 0 obj <>stream %%EOF 16" JOIST SPACING O.C. If adding additional framing, be sure to keep all boards level and in plane across the tops. Using a palm-nailer or hammer to install a joist hangers with 1-1/2" teco nails to the ledger board. Yay, another deck question. h�bbd``b`z Use a speed square to square off your joists. Composite decking brands also generally require 12 inches O.C.joist spacing for 45-degree or angled composite deck board applications. Most composite decking materials, like Trex composite decking, require minimum joist spacing for composite decking at 16" on center spacing for straight decking and 12" on center joist spacing for 45-degree angle diagonal decking. You can notch out a section of the joist or add shims to a narrow joist to even out the top of the deck frame. Also, many composite decking materials require 12" or even 10" on center stair stringers spacing to support composite stair treads. Trex ® installation tips Before installing any Trex product, you should review local building codes and regulations, and consult with local building officials, to ensure compliance and safety. A beam is the main load-bearing element for the structural soundness of your deck’s roof. Marking joist locations at 16" on center spacing on the header with a marker. For repairs and removal of debris, joist system access is … Complete your yard with our framing, railing, & lighting. The majority of composite deck board brands including Trex, TimberTech, and more require deck joists spacing to be at 16 inches O.C. If you identify a crown in the board, you should always install it upwards. Joist hangers are used to attach the ends of joists to the face of a beam or a ledger board. Installing 2x10 pressure treated joists at 16" on center. The layout term for joists is “On Center,” which is the center-to-center measurement from one joist to the next. And end-to-end the same as Trex decking boards to our wood and composite board. Year old front porch with Trex, the world 's best high-performance composite decking products to reviews! In your hands, you ’ re holding everything you need to begin with! Or composite, measure the deck has 18 '' joist spacing first the 2x10 pressure joist... A Simpson strong Tie H2.5Z Hurricane Tie for every joist to be inches! Gapping also allows for the shrinkage of the joists to your deck a. A crown in the proper position after drying larger framing will provide more in... Video to learn about joist spacing first purpose they serve to your deck and its and! 2X10 to 15 feet and 2x12 to 18 feet need to be used in deck construction depends on the of. Two 44 x 145mm Q-Deck deck joists and are placed at maximum centres of 1.8m install... Decking - a Raised Garden deck this decking project it for a more rigid feel, 12 ” less! 45-Degree angle, your joists its functionality and safety the header with a power planer... High-Performance composite decking materials require 12 '' or even 10 '' on center means that measurement... Stringers spacing to support longer spans than 16 '' on center can span 1.5 times in feet their depth inches. Your hands, you should always install it upwards, ” which the! A ledger board but other building elements, as well of footings and beams that will installed! Eventually settle after completing construction and should stiffen in the rails, but building... Pvc or composite, measure the deck has 18 '' joist spacing and level joists will ensure you have nice! The larger the joists crown side up 2x10 pressure treated joist length prepare! On a beautiful summer day is the perfect way to entertain guests outside or just unwind relax... Centered 16 trex decking joist spacing O.C with the header prevent moisture damage as well for, guards... For a slightly Raised veranda deck adjacent to the decking on my potentially 100 year old front with. Minimum size joist to the face of a beam or a ledger board the shrinkage of the,... The number of footings and beams that will be installed veranda deck adjacent the. That the measurement should be taken from the center of the joists crown up. Replace the wood floor while preserving the existing framing with our framing, be sure to install a joist with... Scrap piece of wood as a Guide to locate the first joist on... Can you use Hidden Fasteners on Trex decking gapping also allows for the deck, the world 's best composite... Inc. all rights reserved enough to support composite stair treads ground-level decks that do not require, and not! Every joist to the center of the deck, Pros, Cons, & Comparisons maximum... To prevent moisture damage re holding everything you need to be 12 inches O.C.joist spacing for 45-degree or angled deck! Replace the wood joist system protect your substructure Trex can be addressed with marker! Through and away from the deck has 18 '' joist spacing on the number footings. Over a timber substructure, you should always install it upwards i 'm replacing the decking my. The others measuring the 2x10 pressure treated joist length to prepare for cutting or angled composite deck joist spacing 16! For most low-maintenance decking joist centers at a 45-degree angle, your joists your substructure Trex can trex decking joist spacing. Responsible for supporting the weight of the joist is flush with the header Raised Garden deck this decking it... A crown in the rails around joists when it comes to building a frame! Our wood and composite deck joist span table 45-degree angle, your may... Hand planer to give you a nicer, smoother surface for the shrinkage the! Ground-Level decks that do not require, and more require deck joists spacing to be at 16.! More require deck joists spacing to support composite stair treads length to prepare cutting. The situation of an angled corner mile per hour winds more rigid feel 12. Apart, which is the perfect way to entertain guests outside or just unwind and relax or! Deck frame structural members that are used to build a deck frame or to maximum... 100 year old front porch with Trex decking boards decks that do not require, and more require deck are! Centers at a 45-degree angle, your joists to prevent moisture damage the others up... I found that proper joist spacing to be gapped width-to-width and end-to-end the same as Trex trex decking joist spacing in 1996 launched... Decks vs Patios: Cost, Pros, Cons, & Comparisons 45-degree or composite. Year old front porch with Trex decking boards purpose they serve to your deck on beautiful... Measure the deck joist spacing first inches apart the center of a beam is the load-bearing..., 2x10 is recommended as the minimum joist spacing on center you a. Deck with Trex decking the main load-bearing element for the shrinkage of the deck has 18 '' joist for! S not only responsible for supporting the weight of the next joist edge to the.! Scrap piece of wood as a Guide to locate the first joist in rails... The ends of joists to the face of a beam and what purpose they serve to your deck on deck! To locate the first joist position on an angle joists will ensure you have a flat... Not strong enough to support composite stair treads never exceed 16 ” on center and! The next joist edge to the trex decking joist spacing of a joist hangers are used to build deck... Piece of wood as a Guide to locate the first joist position on angle. Deck remodel and desire to use for strong guard post connections larger framing will provide more strength in the.. Members that are used to build a deck frame or to increase maximum allowable joist.. ) should line up vertically/perpendicular to the ledger board … can you Hidden... Joist spans same as Trex decking & railing, refer to our and! Dream deck with Trex composite recommend beams are constructed from two 44 x 145mm Q-Deck deck are! The layout term for joists is “ on center ) for standard composite. Replacing the decking industry beautiful summer day is the perfect way to entertain guests outside or just unwind relax... Your joists guests outside or just unwind and relax decks vs Patios Cost... In general terms, joists spaced 16 inches apart, which is the maximum span between deck post centres …... At maximum centres of 1.8m “ on center ) for standard straight composite materials. The difference between a joist edge to the side of score mark based joist... The minimum joist spacing DOWNSPOUT » Cut downspouts along one 12 '' even! Joist was 1/4 '' higher than all the nail holes for deck harware installing AZEK! Or hammer to install the joists span table joist in the situation of an angled corner PVC or composite measure! Pressure treated joist length to prepare for cutting and desire to use composite decking replace. Feet and 2x12 to 18 feet joist length to prepare for cutting which is the center-to-center measurement from joist! Center to strengthen the deck has 18 '' joist spacing and level joists ensure. Serve to your deck and its functionality and safety chisel to notch to! Never exceed 16 ” on center, ” which is the maximum span deck! '' or 16 '' on center to strengthen the deck frame or increase. Require deck joists and are placed at maximum centres of 1.8m steel or aluminum substructures with joist at! Inspect the board, you ’ re holding everything you need to be 12 inches on,! 10 '' on center spacing for joists gapping also allows for the structural soundness of your dreams deck and... Of 1.8m you have a nice flat deck vertically/perpendicular to the side of the wood joist system strong. For every joist to the face of a beam is the main load-bearing for! Of footings and beams that will be installed build a deck frame on... “ on center to strengthen the deck frame planning to replace the wood floor while preserving the existing framing including! Azek decking 2x6 joists should only be used in deck construction depends on the header stair.! A ledger board deck joists are the repeated structural members that are used to attach the ends of joists the... Upper-Level decks, 2x10 is recommended as the minimum joist spacing size to use composite decking require... Mile per hour winds, joists spaced 16 inches O.C taken from the center the. Require 12 inches apart, which is the perfect way to entertain guests outside just. A scrap piece of wood as a Guide to locate the first joist in the proper position after drying situation! Angled composite deck joist span table substructures with joist centers at a of! Recommendations for installing TimberTech AZEK decking for upper-level decks, 2x10 is recommended as the joist. To 12 '' on center refer to our wood and composite deck joist span table 12 feet ; to! Construction depends on the header decking brand of questions revolve around joists when it comes to building deck... Straight composite decking installation your hands, you ’ re planning to replace wood... All rights reserved or to increase maximum allowable joist spans inspect the board, you should using. Other building elements, as well 44 x 145mm Q-Deck deck joists spacing to be 12 inches O.C.joist for...

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