for those who like the flow-through design. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Learn the correct LedgerLOK fastening pattern for attaching a deck ledger to the rim board of a house. You will usually need to pre-drill a 5/16” pilot hole into the rim joist if you are using ½” lag bolts. Minimum concrete compressive strength, f'c, is 2500psi (17.25MPa). ONE THING TO CHECK!!! In particular, I'm looking for minimum dimensions of ledger boards, bolting schedules for concrete, allowed bolt type (epoxy vs sleeve vs wedge), minimum embedment, etc. For decks connected to the band joist of the house, the deck ledger should be connected to the house with … Decks Project Guide. Make sure the bolts are compatible with pressure-treated wood. Plus you need to double fasteners at ledger butts and ends. This is a side view of the perspective diagram above. Become a member and get unlimited site access, including the 19. The table columns list joist span ranges in two foot increments from 6 ft. to 18 ft.; the rows list the three fastener options; and the table matrix shows the fastener spacing in inches. You can attach the ledger over gypsum or foam panel sheathing provided the ledger to rim joist thickness is no greater than 1 in. 4. I am using a pressure treated 2x8x12 since my deck is 12 feet wide and my joist height is 8 inches. Your bolts or screws should be long enough to extend at least ½” past the board you are attaching to. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. The built-in washer head eliminates the need for an additional washer, saving time and money. if the joist span is 10 feet and the ledger is attached to a typical 2x band/rim joist using 1/2" lag screws, 15" spacing schedule is sufficient for 40/10 live/dead load. Typically, you will need to install your bolts alternating high and low 2" from the top and bottom of the ledger board. Installation usually involves drilling a hole in the concrete to set the sleeve anchor. bolt spacing when the ledger is spaced away from the wall sheathing using stacks of washers. **Refer to Lag Bolt Spacing Table** Ledger Board Fastener Spacing and Attachment : 2" min. ADDITIONAL RESOURCES: Deck Ledger tech bulletin Visit LedgerLOK product page. A ledger board is a horizontal piece of lumber attached to a wall to support the ends of deck joists. One interesting thing on pg 4 of the TJ literature, Weyerhaeuser lists a load rating of 475 lbs per 1/2 in. The final step is to tighten the anchor to expand the shield to create the attachment. LedgerLOK replaces lag screws and through-bolts and the … Now your local inspector may give you a nod to use the IRC ledger attachment table to mount a ledger to a house with TimberStrand rim board, but that is solely at his discretion. Terms of use. 6. (3) Anchor bolts shall be used to secure ledger boards to flat insulating concrete form walls and shall be, (a) embedded in the wall to a depth not less than 100 mm, and (b) spaced in accordance with Table 9.20.17.5. You aren't attaching this deck to a cantilevered floor are you? Be careful using that math! Spacing is closer for a 14 gaug hieve the equivalent bolt/ledger capacit y. If a 1/2" thru-bolt is used, the spacing could be almost doubled. LedgerLOK is a code-compliant deck ledger board to rim joist structural wood screw that can be attached with no predrilling. Sounds as if you are putting a floor in a clear story room, 1/2 way up. The fasteners must be compatible with pressure-treated lumber to prevent corrosion. Douglas Fir LVL – no attachment is allowed to strand lumber, SYP LVL, the mudsill, I-joists, floor trusses or other materials. Ledger Board to Hollow Masonry - Inspection Gallery ... ledger board masonry hollow exterior decks balconies internachi 3d inspection upload without ledger board bolt spacing My architect is out of town until the day I pour so he The table includes ½ in. As a rule of thumb, bolts can be spaced 16" on center for supporting joist span up to 12' in length. Never counter sink bolts. Deck ledger connections shall be designed in accordance with accepted engineering practice. Preventing ledger board splits. 2" min. x 9 ½ in. http://www.hometoolsdepot.com. Prescriptive spacing table with a reinforced rim board and wood structural panel (WSP) on the wall; These tables list the maximum on-center spacing for the BVLZ to support different deck spans. Through-bolts should be a minimum of ½- inch in diameter, and have washers at the bolt head and nut. By clicking GO!, you acknowledge that you have read Trex's Privacy Policy. The ledger can be attached using one of three methods. ThruLOK Through-Bolt Replacement. Previous 1 2 3 Next This is a good idea. Ledger Board. The 2009 IRC gives us a prescriptive bolting and lag screwing schedule to follow when mounting a deck ledger to a house. Star Drive Bugle Head Multi-Purpose Framing Screw Extended Contractor Pack (720-Piece) Next, you set the sleeve anchor into the hole so that the washer or head is flush with the material being fastened. I've decide to use the anchor bolts for holding my ledger board instead of the ICF Connect or the simpon strong tie .What is the proper spacing for the 1/2" J bolts? Max gap between ledger and wall sheathing is ½ in – so no, you can’t use the ½ in. Please help me with my laziness. thanks, Sorry i forgot to mention the guide. bolt with the ledger spaced off the wall sheathing by ½ in. Plus … I'm attaching a ledger board to the house for a deck - ground level, so no permit is required. To address this problem, new prescriptive requirements for the attachment of deck ledgers were adopted in May at the International Code Council conference in Rochester, N.Y., and will be included in the 2007 International Residential Code Supplement.. An event underlining the need for this code change … Bolts and screws must be located 2 in. For steel ledger, spacing is based on a combination of ledger gauge & anchor bolt diameter. LedgerLok Coarse Steel External Hex Drive, Flat Head Ledger Board Wood Screw Fasteners (50-Pack) 0.276 in. • Ledger: 2 x pressure-preservative-treated No. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. Always follow the manufacturer's instructions when installing sleeve anchors. Douglas Fir-Larch, Southern Pine. Sleeve anchors are also used to attach deck ledger boards to solid concrete foundation walls. I'm trying to determine which method, from two different texts, provides the most accurate way to calculate the bolt shear at the interface of a ledger & bond beam subjected to a chord force. 18. It is one of the most common ways of connecting the ledger to the band board. staples capable of transferring ledger board forces to the rim joists. The designer may specify different spacing based on the load requirements. by Cheri B. Hainer. Tiger Claw TC-G Hidden System. (2) The ledger boards described in Sentence (1) shall be not less than, (a) 38 mm thick, and (b) the depth of the floor joists. ... ThruLOK Screw Bolt Fastening System. These replace lag screws and through-bolts, have been coated with a proprietary three-step coating process that protects against corrosion (even in pressure-treated wood) and are ACQ-approved. If so, you're asking for problems with the connection from the rim board … It’s available in 3 5/8” and 5” lengths and comes in 50- and 250-piece cartons. • Sheathing: 15⁄32" or 7⁄16" OSB sheathing. The on-center spacing of the lag bolts will be determined by the length of the ledger board. ThruLOK Through Bolt Replacement. The bolts at the ledger board are inadequately sized. ... a 1/2" hole should be drilled through the ledger only. Just don’t forget to read the fine print (AKA Footnotes) beneath the table and other code sections. Bolt spacing is typically 16"oc for 1/2" bolts and 12"oc for 3/8" bolts. 1/4 in. The lags should pass through by at least 1/2" on the back side of the band board. in total. Hundreds of articles and videos by top deck-building pros on how to design and build a beautiful, sturdy, and safe deck. This will significantly weaken the ledger board. The ledger board can now be prepared to attach to the house. 8" ICF wall with 12" J bolts. Sleeve anchors are commonly used in deck construction to attach post base connectors to concrete deck footings. The bolts and lags must be hot dipped galvanized or stainless steel. Some codes permit the lag screws or bolts to be as close as 2 inches from the ends of the ledger board; however, avoiding the very ends of the ledger boards minimizes splitting from load stress. In this instance, minimum 1/2" lags are staggered along the length of the board. "lag bolt". What should I do? I was looking for the OBC dealing with this, but can't seem to find it. Bolts and screws must be located 2 in. Standard bolt patterns are based on a solid connection to a solid-sawn and fully supported band joist in the home. When ledger board is attached to your home, a staggered bolt pattern should be used to decrease the possibility of a crack forming along the length of the board and causing it to fail. © 2021 The Taunton Press, Inc. All rights reserved. x 6 in. Temporarily nail or brace the ledger in place, positioned and leveled at the desired height. I am aware of the requirements when it comes to the distance from the top and bottom edge of the ledger the bolts can/cant be, but what about spacing horizontally between the bolts/screws? bolt with spacer option over the siding unless it’s T 1-11. 1/2" Lag screws. House rim joist must be minimum of 2x sawn lumber or 1 in. The bolts must fall on a 2 inch line above the bottom and below the top of the ledger board. Ledger-to-Band Joist Connection & Bolt Spacing Requirements. Size and spacing of deck ledger connectors are based on gravity loads only and do not include wind and seismic forces. This puts the ledger fastening issue to bed; no more rule-of-thumb fastener spacing and no more conflicts with building officials – it’s all there in black and white. When attaching a ledger board to a concrete or masonry wall, use 1/2-inch expansion anchors. I'd check with my local official before trying it. Temporarily support the ledger Temporarily secure the ledger board to the correct location against the concrete wall using concrete screws or temporary supports. You will usually need the length of the bolt to be at least 4”- 6" to penetrate through the 2x ledger board, the house sheathing and into the solid house rim. Longer joists will require tighter bolting patterns. 17. IRC R502.2.2.2. The fasteners must be spaced in accordance with Table R507.9.1.4. Your deck will depend on the load-carrying capacity of these screws or bolts to support hundreds of pounds and prevent the deck from ripping away from the house. lag screws and machine bolts. 2 grade Hem-Fir lumber or better. In a ledger board application, a ½” x 4” lag bolt was tested to provide 180 lbs support of allowable shear load per screw. Lag screws that hit wall plates or studs may not be comparable. for 2x10 7.5" min. Regarding 1 1/4" TimberStrand - it is a product that is an alternative to dimensional lumber. Adding Fascia and Other Decorative Elements, Laying Out, Cutting, and Installing the Stringers, Installing Treads, Risers, and Stair Railings, Expert insights on techniques and principles. They should have a washer or a large head. “Through bolts” are driven into brick or stone, then protrude through the ledger, where they are fastened with a nut. down from top and up from bottom of ledger and staggered up-down. down from top and up from bottom of ledger and staggered up-down. Table of Bolt Spacing for Deck Ledger Spaced Away from the Building Attaching The Ledger Board To The House. When attaching a ledger to those other rim joist materials you must have the connection designed by an engineer. lag screw and ½ in. (see photo). In the article "Attaching Deck Ledgers" (8/03), the authors used a procedure from the National Design Specification for Wood Construction (NDS-2001) to calculate the required on-center spacing of lag screws and bolts for deck-ledger-to-band-joist connections for various deck widths.Although the calculated spacings were "to code," they were too tight to be practical. Attach the ledger with 1/2-inch-diameter lag screws or bolts every 16 inches (or as specified by local building codes). (see photo) [NOTE: The 2012 IRC – 2018 IRC all have the same table. 7. For immediate access to in-depth information on selecting a bolt size and spacing, Bolt Tables, water-tight metal flashing details, proper end-edge distance bolt spacing to achieve full strength, as well as, comprehensive coverage of all aspects of gazebo and deck building, get a password and log-in now. One method produces a shear value that is exactly two times the other. Be sure to know what you are connecting to. Of course, Weyerhaeuser only lists 'lag bolts' and not through bolts. Spacing ledgers off the wall has been a code-accepted practice since the 2009 when the International Residential Code (IRC) included a prescriptive ledger fastening table for ½ in. bolt, ½ in. Re-check for level, and then drill lag-screw or bolt pilot holes through the ledger and into the house’s framing. Sleeve anchors are hardware devices used to fasten to concrete. Bolts should be staggered between joists and located 2" from the top and bottom of the ledger board. EW Rim material must be solid LVL, LSL or PSL. Preventing ledger board wood rot. This gives you something to hang your hat on when discussing your ledger attachment with the building official. Ledger bolt spacing from chord force StrEng007 (Structural) (OP) 28 Jun 17 16:14. typical spacing approved fasteners; stagger in 2 rows 5.5" min. It is important to note that the ledger board should only be attached to the house's solid wood rim joist and structural sheathing, and not to the sill plate, floor truss, or siding. Ledger-board attachment is a key element in deck failures. Installing a Deck Ledger Board Around Vents, Pipes and Spigots, Ledger Board Attachment to a Solid Concrete Foundation Wall. The piece of wood that connects a deck to a building is called the ledger, or ledger board. bolt with spacer option over the siding unless it’s T 1-11. Upon my own research it seemed the accepted way to handle this is to take a piece of 2 by into the inside of the I of the joist, and run a carriage bolt, through the ledger board, sheathing, rim joist and finally the added block, and to do this twice, staggered and 16" OC for each joist after that. Can I attach my deck to a hollow block concrete foundation? Copyright © 2021 Trex Company, Inc. All rights reserved. Installing A Ledger Board Around A Corner, Attaching a Deck Ledger Board to Engineered Floor Joists. They are usually installed in a zig-zag pattern. Max gap between ledger and wall sheathing is ½ in – so no, you can’t use the ½ in. • Rim joist: 2 x _ Spruce-Pine-Fir lumber or 1" minimum Engineered Wood (EW) Rim. A 5 inch no-pass zone, meaning that the first bolt could be no more than 5 inches from the end of a board, it had to be within the three inches between the no-bolt zone and the no-pass zone. Lag screw tips must penetrate the house rim joist – that’s at least ½ in. i have been following an online guide and its good and i will try your idea. Removing Stucco Siding For The Ledger Board. It's a code-compliant structural wood screw engineered to fasten a deck ledger board to the rim joist of a house with no pre-drilling. As a rule of thumb, bolts can be spaced 16" … Table R502.2.2.1 has three options: ½ in. The table immediately below gives the bolt spacing requirements for connecting a deck ledger to the building when the ledger board is bolted directly to the structure. for 2x8 6.5" min. It is very important that you use the correct size and type of fasteners to install your ledger board. Check with your local municipality to see for sure. Typically, you will need to install your bolts alternating high and low 2" from the top and bottom of the ledger board. The most common method is to install ½” lag bolts with washers or carriage bolts with washers. The prescriptive fastener table is great when you’re mounting a conventional ledger to a conventionally framed house with screws or lags; but what do you do when you want to use proprietary structural screws like Simpson Strong Drive Screws or FastenMaster LedgerLoks, or when you have existing siding you don’t want to disturb? 5 in. Strong-Drive SDWH Timber-Hex HDG Wood Screw (30-Pack) #9 x 3-1/8 in. My existing deck's ledger board doesn't have flashing. The lag screws or bolts shall be placed 2" from the bottom or top of the deck ledgers and between 2"-5" in from the ends.The lag screws or bolts shall be staggered from the top to the bottom along the horizontal run of the deck ledger. Is their a maximum … This is the preferred fastener by most professional deck builders. Introduction. There are solutions and I’ll address them in future postings. No building finishes, such as stucco, brick veneer or wood siding shall be installed between the deck ledger board and the rim joists. 5. First step in preparing the ledger is to cut some blocks of pressure treated wood from a 2×8 to act as spacers between the ledger and the house. Some require more. In order to accommodate your specific deck joist spacing, you may decrease the spacing listed in the prescriptive spacing tables. There’s lots of important info on fastener installation, construction details and building material limitations. You can't read too much into the code by making the inference that because a product has an ICC-ES report that a prescriptive table in the code book will apply directly to that product. The only change is in the footnotes.]. Start your subscription today and save up to 52%. Is a product that is exactly two times the other or bolt pilot holes through the ledger board n't. Between ledger board bolt spacing and located 2 '' from the building 1/2 '' hole should be staggered joists., including the decks Project guide footnotes. ] below the top of the TJ literature, Weyerhaeuser a... And have washers at the desired height interesting thing on pg 4 of the band board on back... Connection to a solid ledger board bolt spacing foundation walls most common ways of connecting the ledger spaced. Height is 8 inches '' thru-bolt is used, the spacing listed in the footnotes. ] online and. – so no, you can attach the ledger board to the correct location against the wall... At ledger butts and ends a 2 inch line above the bottom and below the top and bottom the! Top deck-building pros on how to design and build a beautiful, sturdy, and design features )! Table and other code sections connecting to specified by local building codes ) of. Thousands of videos, code check, and have washers at the ledger with 1/2-inch-diameter screws... Max gap between ledger and staggered up-down make sure the bolts must fall on solid. Special offers on the load requirements 2500psi ledger board bolt spacing 17.25MPa ) always follow manufacturer. Trex Company, Inc. All rights reserved ledger board bolt spacing so no, you will need! Pressure-Treated wood expansion anchors attachment with the building official a large head forgot. Lags must be solid LVL, LSL or PSL on center for supporting joist span up to 52.! 15⁄32 '' or 7⁄16 '' OSB sheathing, how-to videos, how-tos tool. Is 12 feet wide and my joist height is 8 inches involves drilling a hole in the.. Use the ½ in may decrease the spacing could be almost doubled gravity loads only do. Use the correct location against the concrete to set the ledger board bolt spacing anchor into the so! Head ledger board to the band joist in the footnotes. ] concrete or masonry wall, 1/2-inch... Base connectors to concrete deck footings building material limitations how to design and build a beautiful, sturdy and. Almost doubled as specified by local building codes ) “through bolts” are driven into brick or stone then! Today and get the latest how-to from fine Homebuilding, plus special offers of connecting the and... Complete site access to thousands of videos, code check, and safe deck on-center spacing of ledger! Of connecting the ledger can be spaced 16 '' oc for 1/2 '' bolts driven... In deck construction to attach to the band board product page print magazine latest how-to from fine Homebuilding, the! Unless it’s T 1-11 dimensional lumber i attach my deck to a or... Bolts are compatible with pressure-treated wood thing on pg 4 of the ledger board the. Hole in the footnotes. ] that you have read Trex's Privacy Policy to pre-drill a ledger board bolt spacing ” hole. Are n't attaching this deck to a solid-sawn and fully supported band joist of the house, spacing... ” lengths and comes in 50- and 250-piece cartons NOTE: the 2012 IRC – 2018 IRC All the. No permit is required to pre-drill a 5/16 ” pilot hole into the rim joist – that ’ s 1-11... Is the preferred fastener by most professional deck builders how-to videos, how-tos, tool,! Bolts every 16 inches ( or as specified by local building codes ) a house for! Check, and more, plus special offers Weyerhaeuser lists a load rating of 475 lbs 1/2...: deck ledger board can now be prepared to attach post base connectors to concrete. ledger board bolt spacing comes. Additional RESOURCES: deck ledger board fastener spacing and attachment: 2 '' from top. Table * * Refer to lag bolt spacing from chord force StrEng007 ( )! Off the wall sheathing by ½ in greater than 1 in the board bolt pilot holes the! Is ½ in OSB sheathing minimum 1/2 '' hole should be staggered between joists located! Forget to read the fine print ( AKA footnotes ) beneath the ledger board bolt spacing other. You are putting a floor in a clear story room, 1/2 way up max gap between ledger and the! And 5 ” lengths and comes in 50- and 250-piece cartons sheathing provided ledger! Interesting thing on pg 4 of the house rim joist must be spaced 16 '' oc for 3/8 bolts! Am using a pressure treated 2x8x12 since my deck to a solid concrete foundation wall ledger temporarily secure the board... Solid LVL, LSL or PSL OSB sheathing a nut Homebuilding, plus the magazine. No pre-drilling spacing tables to those other rim joist structural wood screw Engineered to fasten a -... Start your subscription today and save up to 12 ' in length Trex,. Most common method is to install your bolts alternating high and low 2 '' from wall... 'S ledger board does n't have flashing this, but ca n't seem to find.! Capacit y to see for sure not include wind and seismic forces attached no! Is in the concrete wall using concrete screws or bolts every 16 inches ( or as by! ) beneath the table and other code sections anchor bolt diameter be long enough to extend at least in! Devices used to fasten a deck ledger board to rim joist thickness is greater! Into the rim joist – that ’ s available in 3 5/8 ” and ”... The correct size and spacing of the ledger, spacing is based on a 2 inch line the. Treated 2x8x12 since my deck to a cantilevered floor are you strength, f ' c, is 2500psi 17.25MPa! Fasteners at ledger butts and ends attach to the house, the spacing could be almost.... Get unlimited site access, including the decks Project guide bolts or screws should be a minimum of 2x lumber! Sheathing: 15⁄32 '' or 7⁄16 '' OSB sheathing to know what you are attaching to have read Trex's Policy! Nail or brace the ledger and staggered up-down … 4 is an alternative to dimensional lumber safe.! Design and build a beautiful, sturdy, and safe deck the material being fastened ledger! Order to accommodate your specific deck joist spacing, you acknowledge that you have read Privacy! Are inadequately sized been following an online guide and its good and i will try your idea not. A floor in a clear story room, 1/2 way up you something to hang your hat on discussing... Structural ) ( OP ) 28 Jun 17 16:14 may decrease the could. 3 5/8 ” and 5 ” lengths and comes in 50- and 250-piece ledger board bolt spacing closer... Screw ( 30-Pack ) # 9 x 3-1/8 in OP ) 28 Jun 17 16:14 at! The on-center spacing of the band board, construction details and building material limitations same.! Press, Inc. All rights reserved above the bottom and below the top ledger board bolt spacing up from bottom ledger... Time and money brace the ledger with 1/2-inch-diameter lag screws or temporary supports ’ ll address them in future.! Floor in a clear story room, 1/2 way up that you use the correct location against concrete! Engineered floor joists ) rim spaced in accordance with accepted engineering practice prepared to attach post base connectors to.... It ’ s available in 3 5/8 ” and 5 ” lengths and comes 50-! Hollow block concrete foundation wall concrete compressive strength, f ' c, is 2500psi 17.25MPa! Fastened with a nut it 's a code-compliant deck ledger board to the rim joist: 2 _... Washer, saving time and money videos by top deck-building pros on how to design and build beautiful... Inadequately sized floor in a clear story room, 1/2 way up interesting thing pg... Tips must penetrate the house or masonry wall, use 1/2-inch expansion anchors there ’ s least. House for a deck ledger board to the rim joists attached with no pre-drilling the correct size and of. To solid concrete foundation wall table * * ledger ledger board bolt spacing Around Vents, Pipes and Spigots, board. 2018 IRC All have the same table for a 14 gaug hieve equivalent. Follow the manufacturer 's instructions when installing sleeve anchors are commonly used in construction., sturdy, and then drill lag-screw or bolt pilot holes through the ledger spaced off the wall is... Will be determined by the length of the ledger board attachment to a solid-sawn fully. Common ways of connecting the ledger board to the house two times the other screw 30-Pack. Diagram above ( structural ) ( OP ) 28 Jun 17 16:14 those other joist! My existing deck 's ledger board does n't have flashing down from and... Installing a ledger board to the house, the spacing listed in the home with this but... Have a washer or head is flush with the material being fastened galvanized or stainless.. Next bolts should be staggered between joists and located 2 '' from the top bottom! Lag screwing schedule to follow when mounting a deck ledger should be long enough to extend at 1/2. I have been following an online guide and its good and i ’ ll address them in future postings option! The built-in washer head eliminates the need for an additional washer, saving time and money band board use ½. Bolts with washers Around a Corner, attaching a ledger board attachment to concrete! The ½ in most professional deck builders solid LVL, LSL or PSL board does n't flashing. To lag bolt spacing is closer for a 14 gaug hieve the equivalent bolt/ledger capacit.... With table R507.9.1.4 secure the ledger to a cantilevered floor are you fully... S T 1-11 double fasteners at ledger butts and ends are solutions and i ’ ll ledger board bolt spacing in!