Pin. Falling Through the Cracks – Walking across a deck can prove hazardous if board spacing is too wide. Proper spacing allows moisture to drain off the deck between the boards. Why is Joist Spacing So Important? The deck boards were too tight from day 1 and have been sliced with a circular once. If necessary, adjust number of deck boards to match in both calculations, and see if different board gaps at each end of deck are acceptable, compared to equal gaps and cutting the last board … This circular saw attachment will make it easy to widen the gap. Continue reading at DECK FLOOR LAYOUT or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. Dry vs. for water to drain. Cumaru Deck Board Gapping – Allow a minimum of 1/8" gap between board widths on 4" wide decking, and 3/16" gap between board widths on 6" wide decking for drainage, airflow and expansion. This precision also creates perfectly consistent spacing between the boards for a flawless look across the entire deck. The exact measurement doesn't matter as much as uniformity of spacing for appearance's sake. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. decking is installed wet, as is often the case for pressure treated Many sellers of hardwoods instruct to space at 3/16 – 1/4”. Annotated decking diagram. In the case of a deck board, this determines whether you have a "cup" warp (concave surface) or a "crown" warp (convex surface). How can I widen the spaces between my deck boards on my 3 year old cottage deck? I have read hardwoods do not take in enough moisture that make them swell but will rather shrink. The goal is to have about an 1/8-inch gap (the diameter of an 8d nail) between boards after the decking has dried to its equilibrium moisture content. I'm sure the deck joists and structure have suffered from this installation. The primary function is to drain water from the deck. Still standing this outdoor state is still in use (Summerblue 2020). wood that has partially air-dried, it is a judgment call. Being Inattentive to Local Deck Building Code . Share. To prevent this, it is recommended that decking boards be placed with a space between the rows ranging from 1/8 to 1/4 inch. TimberTown is more than a specialty lumberyard. Another proprietary product for this application, Vycor Deck When joining two cut deck boards together in a run, fix with screws 15mm from the end of each board, at an angle to ensure secure fixing into the joists below. But what you may need to focus on first is the spacing between the deck boards. over the tops of each joist prior to laying the decking boards. Answer + 1. If we install a typical 1×6 Ipe decking board today using our weather conditions of 90% humidity and 96° while assuming the wood is 5.5″ wide, it will maintain that width through the heat and humidity; however, as we draw into the fall season, both the heat and humidity begin to drop. I have a flat roof and my contractor built a cedar board floating deck. Wide Deck Board Planks by: Editor - Rich Bergman I tend to think that 12 inch wide deck board planks would look a bit odd - more like old pine flooring rather than an outdoor builing material. Women’s heels, people’s toes, small paws and more can slip through and cause an injury. As discussed in Best Practices Guide to Residential Construction: 'When securing the decking, it is If the board are too tight, water will sit on the deck and try to find it’s way into your deck or home. Avoid many of the pitfalls that plague homeowners building decks. Spacing on a deck refers to the small edge-to-edge gap between decking boards, not the ends of the boards. ... Pine needles and other debris are building up between the deck boards and I’m concerned about moisture build-up and rot. Model #FW010616E2G01. Here’s why these small gaps have a big affect on your deck and tips for getting them just right. x 12 ft. Pressure-Treated Hem-Fir Lumber is ideal for a variety of applications, including decks, landscaping, stair support, walkways and other outdoor projects where lumber is exposed to the elements. If I'm right, in my OPINION 1/16" gaps between such deckboards is unsafe, risking swelling sufficient to close the gaps, stop deck drainage and thus increase the risk of deck damage. They are rugged and they proved to be invaluable in lining up deck boards, particularly on long 16 ft boards which had a curve to them. Deck & Porch construction details & procedures. AdvantageLumber, decking & flooring supplier, 601 Ohio St., Before nailing or screwing boards down, lay out a section putting spacers between each board. The maximum joist spacing you can use will depend on the size and allowable span of your joists. They have risers (also called toe kicks), treads and railings. the boards are tight fit(no space) and also tight fit to the edge wood board( the wood board sit on top is metal capping). When installing kiln-dried stock, use a 16d nail as a Addressing deck board spacing and the problems that arise. Didn't realize they came 2 to a pack so thought I bought too many, but was glad I did. Plan accordingly based on how dry your decking is. These deck boards are Trex™ or another synthetic decking material. Then lay out 5 - 6 rows of decking boards, cut to length. Maintains consistent spacing between boards (12” to 16” on center, depending on the board type, desired foot feel, and deck design). Edeck.com, 141-I Route 130 South Tweet. When Lon Church constructed this outdoor stage for the Summerblue Arts Camp (Two Harbors MN) in 2001, we knew that the structure would have to endure severe winters and strong summer sun without the protection of a roof. Enjoy building your deck! 433. Account for this in the spacing by giving it a little more room between boards. These materials require different considerations for end-to-end deck board spacing. Adjust spacing between deck boards Measure to the house at both ends and in the center when you get within about 5 ft. of the wall. gaps form as the wood dries. Original Source: http://timbertownaustin.com/wood-projects-and-profile/proper-deck-board-spacing, Posted on March 24, 2015 by Ben Roberts, This Is What Ipe Looks Like After 12 Years. Deck joists support deck boards and everyone who walks or relaxes on a deck, and whatever is placed on it too. How to Stagger Deck Boards. In this video I offer up two deck repair options to assist Lydia, from Toronto, on creating wider gaps between the boards of her three year old cottage deck. If we install a typical 1×6 Ipe decking board today using our weather conditions of 90% humidity and 96° while assuming the wood is 5.5″ wide, it will maintain that width through the heat and humidity; however, as we draw into the fall season, both the heat and humidity begin to drop. This is not advised for P T wood. Wooden decks are a common exterior addition to homes, allowing families extra space to use when enjoying the outdoors. It is important not to have too much overhang for the nose of the tread or tripping can be the result. Joist and Deck Board Spacing Guidance. Thanks for an interesting and important question.Â. Trex Enhance Naturals 16-ft Foggy Wharf Grooved Composite Deck Board. The 1-1/2 in. if you use cedar, it can’t be smaller than a 2x6, Hemlock, can’t be smaller than 5/4x6. For TimberTech AZEK® Decking it’s recommended to have a minimum 1/8” to 1/4” side-to-side gap between deck boards. Is it ok to space hardwoods that are kiln dried at 1/16”? Apologies for the delay. x 5.5 in. The plan is to change out misc..boards and open then remaining gaps enough to breath, drain and seal. or self-adhesive membrane (one approved for UV exposure) The wider your joist spacing, the stronger decking board you need. When deck boards are too tight, water will not be able to drain, causing the wood to rot over time. Filling the space between the floorboards on a deck. doubt, it is best to err on the side of leaving a little extra This can be achieved by laying strips of felt paper A 1/4" gap between 6-inch wide boards can give as much as 1/2" total gap if the boards are installed damp or wet and then dry  out - a bit more than desired - as your question suggests. STEP 7. Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. This guide outlines the method for installing a single level deck with a timber frame and horizontal deck board positioning. Watch out: there is also a potential trip hazard if the boards are installed so far apart (and so wet) that as the boards dry in dry climates and weather that their shrinkage opens the gaps to 1/2" or more. Using Cumaro (kiln dried to 12%) deck boards that will be left to acclimate several weeks prior to installation. -- Adapted with permission from Best Practices Guide to Residential Construction. This can be clearly seen in the side view image of the steps. Mr. Grudzinski adds: Not to mention when it snows and the snow melts, the added weight on the deck by a non draining deck will be immense [... if trapped water results in a build-up or accumulation beyond the anticipated design of the deck. Cumaru Deck Board Expansion – Hardwood decking may expand by as much as 1/8" on 6" wide boards and 1/16" on 4" wide boards during times of high moisture, thus proper gapping is recommended. This circular saw attachment will make it easy to widen the gap. The stairs should be at least 36 inches wide. Where board ends meet a wall, leave a healthy 1/2-inch gap to ensure the material can expand and contract without coming into contact with the wall. Treated Lumber – Usually treated lumber will have some shrinkage so you can butt the boards almost right against each other during installation. In decking applications subject Manual for the Inspection of Residential Wood Decks and Balconies, by Cheryl Anderson, Frank Woeste (Forest Products Society), & Joseph Loferski, October 2003, ISBN-13: 978-1892529343. Using shorter length boards (8-14 foot) can save you up to $2.35 per square foot, sometimes more if you’re using a hardwood like ipe. If the gap in between the deck boards is too narrow use the Saw Guide by Lounsbury Products. If your deck is slightly out of square (different widths), calculate results for both widths, and set out each end to suit. Fix your first row of boards across your deck, parallel to your house. There is no change in the total mass when snow (or ice) melts to liquid water form. tree debris, it is best to protect the tops of the joists from Best Construction Practices for decks or porches. A house is only as strong as its foundation, and a deck is only as strong as its frame. When I built my decking (using 140mm wide merbau) I went with about 4mm spacing. There are other factors affecting the amount of future expansion and shrinkage of any wood flooring (indoors) or decking (outdoors) such as. Your measurements and layout need to be accurate, not only for the primary deck surface but for the smaller parts, like your deck stairs. Getting the board spacing right the first time can save you the hassle of having to pull the boards up later, or live with gaps that are too narrow or large in the long run. Rip cutting lets you customize the width of your deck board. Membranes such as Vycor Deck Protector can also be used DECK BOARD GAPS & SPACING at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. When securing the decking, it is important to leave adequate spacing between the boards for water to drain. Editor's note: the weights of a given volume of snow and of the water produced when the snow melts will be identical. Fire Control – Deck boards that are widely spaced will spread fire more quickly. You can build your own custom stringers or buy pre-cut stringers at Lowe's. Fits any 5-1/4 in. If you have 24 OC joists, I'd definitely stay with the 2X decking. The author of the article recommending the wider gap says that water and debris will fall through more easily and air will flow easier through the wider gap. For a more rigid feel, 12” or less may be preferred. I used tiling spacers to get it consistent. Joists spaced 16 inches on center will take both 5/4 and 2-inch deck boards (which are actually 1-1/2 inches thick). If the decking is installed wet, as is often the case for pressure treated material, it is best to install the boards tight, letting gaps form as the wood dries.When installing kiln-dried stock, use a 16d nail as a spacer to leave enough space for the boards to swell slightly and still leave an adequate drainage space. the area is 16'x20' range and he made into 4 section, 16'x5' each. Deck stairs are typically made from 2 x 12 stringers spaced about 12 to 16 inches apart. A convenient way to get consistent spacing is by using a 6-penny or 8-penny nail between each course of decking; the width of the nail is 1/8 inch. Don’t use a board any smaller than what is recommended for that spacing for that species. Both sizes have their pros and cons. With heart cut and edge grain boards, the issue of warping is very … Spacing between deck boards provide a few critical functions. The deck board spacing gauge worked great on spacing my deck boards. If in doubt, it is best to err on the side of leaving a little extra space for the wood to swell when wet. If the gap in between the deck boards is too narrow use the Saw Guide by Lounsbury Products. I live upstairs an the deck has nails sticking out an gaps size of pinky u can't sweep cause everything falls down under can't even relax on the deck. This article explains proper gap size to leave between deck boards for drainage and drying, and extra steps to take to protect deck joists from rot. Wider gaps permit more airflow, which feeds fire, and it also more likely to catch embers. The most common spacing measurement between deck boards is 1/8 inch. That may explain part of the too-tight boards and no drainage - someone didn't realize that synthetic deck boards, unlike (usually wet) treated lumber decking, will not not shrink and open up later. I have all the tools, all the timber, sa blooming great box of great think shank "green" 8x2.5" decking screws, a cordless drill and two spare batteries. STEP 8. for pricing and availability. (146mm) deck board and creates automatic 1/16 in. Click to Show or Hide Citations & References, - 2019/10/16 original source edeck at 1-866-381-4072  http://edeck.com/cumaru-decking/cumaru-decking-installation/, - https://www.wood-database.com/cumaru/ 2019/10/16, Best Practices Guide to Residential Construction, ARTICLE INDEX to BUILDING DECKS & PORCHES, Prescriptive Residential Wood Deck Construction Guide, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES. Please submit a easy, tried and proven solution. The 5-inch wide Cumaru pre-finished wood flooring - an interior floor shown here and sold by AdvantageLumber.com is cited & discussed here. Give it Dry Time – If you have the time and a place to keep the wood out of the elements, give it two or three weeks to dry out before installing. Wet Wood – If your wood is damp during installation place the boards closer together since they’ll shrink once they dry. Heart Cut and Edge Grain Boards. 16"o.c. ft.) you could save $1,011 by using shorts! Making strong, durable steps up to your deck requires careful measurement of the rise of each step, plotted together as one slope. Shrinkage will be less on kiln-dried (KD) boards. By no means do I install flashing atop all of my deck joists; I rely on good drainage from adequate deck board spacing and on air movement thanks to elevation above ground to avoid or at least reduce rot risks on the deck joist tops (of course benefiting too from having used treated wood in the deck construction). - Ed.]. Cumaru, purchased kiln dried to a low moisture level can nevertheless both shrink and expand after installation; generally the potential for expansion of any dried lumber is greater than the potential for future shrinkage, but both occur.  I agree with you that in citing the expected amount of moisture uptake of wood the species (and hard vs softwood) is a factor but there is no question that hardwood can absorb enough moisture to swell enough to cause flooring damage. This stage, built with 5/4 tongue and groove flooring, has no between-board drainage, but the deck is pitched slightly forward, towards the audience for performance reasons. To learn more from Steve, visit https://baileylineroad.com/. It sounds like the deck nails need to be hammered down and set or perhaps pulled and replaced with deck screws. Share. Deck joists are typically spaced either every 12 inches or 16 inches on center. For other readers: Cumaru is a Brazilian teak wood flooring sold both as an interior floor and as decking or deck tiles - such as from online vendor Advantage Lumber https://buyhardwood.advantagelumber.com/ and others listed below. Construct a simple jig with a 5 x 12-in. If there is a post near the house, you may need to remove the next-to-last board, then install the two last boards at the same time. In this case, some space between the boards is a good idea because the wood can actually expand slightly over time. Joists that are at least 45 mm wide (seasoned hardwood and treated soft wood) or 50 mm wide (unseasoned hardwood) are recommended in order to avoid splitti ng when receiving nails or screws from placement of decking boards. On 2017-01-22 by (mod) - Back deck floor 12 by 16 what gap size. Additional metal flashing is in use to protect the deck joist top from rot. Falling Through the Cracks – Walking across a deck can prove hazardous if board spacing is too wide. She noticed a wide variety of pieces, with the inclusion of what it is like to have an awesome helping style to have the rest without hassle grasp some grueling matters. They offer 1/8 th inch or 3/16 th inch spacing, which is in line with what is recommended for laying deck boards. That means on an average sized deck (430 sq. None of the installation instructions I've seen for Cumaru suggest a 1/16" gap for board installation.  Instructions for installing Cumaru flooring are offered by quite a few wood flooring and decking vendors. the nails are all sunken under the wood surface. Questions & answers or comments about deck & porch construction, framing sizing, board spacing, structural connections. Protector™, is available from Grace Construction Products. Below is a photo of the stage in use [image file], courtesy Lon Church, Summerblue Arts Program. Additional details about deck flashing and more deck flashing images are. for pricing and availability. Board: Show in Diagram : Running Board Measurements. An email has been sent to your selected email address. The 20x20" Cumaru deck "tile" shown here and sold by AdvantageLumber.com is a variation on use of Cumaru teak decking; deck tiles, placed over a proper support system, can provide a suitable walking surface on flat roofs; these tiles ought not suffer the same moisture-related expansion or contraction concerns as those faced by Cumaru outdoor decking or indoor finished hardwood flooring that we discuss here. Space between decking planks. Screw spacing in deck boards is important for structural and aesthetic reasons. Compare; Find My Store. And because the surface is used as a performing stage, we used 5/4 tongue and groove treated wood for the surface - no gaps for drainage. Composites – Composite deck boards will have basically no shrinkage so they need to be spaced with gaps from the get go. If the Just use a circular saw and rip the board to the width you want. Too little room in-between deck board spacing and your deck boards could buckle when they expand. If adding additional framing, be sure to keep all boards level and in plane across the tops. Buffalo, NY 14203 USA, Tel: (562) 205-1872 (California), Website: https://www.advantagelumber.com Email: JLevakoff@AdvantageLumber.com supplies hardwood decking & inteior hardwood flooring including IPE decking, Cumaru decking,Tigerwood decking, Massaranuba decking, Garapa decking, deck railings, trim, moldings. If necessary, adjust number of deck boards to match in both calculations, and see if different board gaps at each end of deck are acceptable, compared to equal gaps and cutting the last board … When you build a deck, spacing and sizing are both critical. x 5-1/2 in. I think Thompson's water seal is a nice product and one I've used from time to time. The bright yellow color was easy to spot and was an added plus. Unfortunately, the only better solution that's in the same price range (Jig-a-Deck) is only available with a 1/4" spacer, which is too wide for the green (wet, swollen) lumber sold at most lumber stores, which will shrink after installation to the point that your 1/4" spacing grows to 1/2". We curate our decking, Brazilian hardwoods, specialty siding & soffits, and other outdoor living products to be the best option for discerning craftsman. Home Inspector David Grudzinski provided the too-tight deck board photographs just below, and comments: Here is a deck poorly installed with no deck spacing, and no ventilation. space for the wood to swell when wet. So, for 24 o.c. Fasteners provide 6 mm gap when installed correctly. Pre-drill all boards, whether using screws or nails. To avoid deck joist top rot Morshing applies peel-and-stick flashing membrane material to joists and ledgers during deck construction. Cumaru is about twice as hard as oak, average in dimensional stability. Install the first course of decking material. For wood that has partially air-dried, it is a judgment call. If in They rest on a solid foundation and are attached to the deck with hangers. The distance a deck board traverses between the joists is unsupported, so boards of different thicknesses are required for varying spans. You can calculate the spacing so that you don't have to slice the final board lengthways. Some things I’ve read say to space the boards with a 16d nail, another article recommends a three-eighths inch gap. Conversely, the stronger your decking board, (based on MOR and thickness), the wider the joist spacing you can afford. Larger gaps, such as 1/4”, allow more of this material to fall through the deck. Rot – Deck boards that are spaced too tightly together are more likely to trap dirt, debris and moisture, which is the perfect mixture for making rot. Wood expands when it's wet. But you also don’t want to leave too much space between the decking boards. When you’re figuring out decking the number one concern for most people is what kind of wood to use. x 12 ft. Pressure-Treated The 1-1/2 in. Dimensions stated represent the maximum length of unsupported joists (ie. This is parti cularly relevant where decking boards abut over the joist as the fi xings can be placed further from the board’s end. How far apart should deck joists be spaced? Attach decking boards. Decks always must be built to be structurally sound and built to code; that part is never debatable. Steps to protect deck joists from rot. 433. Yet water can seep into that joint. If you have poor ventilation, wider is always better. If you’re using nails pre-drill on a slight angle, as this will ensure the nail holds the board on tighter. slightly and still leave an adequate drainage space. However, that doesn't always work for wide timbers like your 135mm ones. However in my experience no paint-on water sealant on the top of deck joists will last as long as the life of the deck, and it's also my view that once the deck has been built it is virtually impossible to re-apply any water-resistant treatment to the tops of the deck joists as they're now covered by deck boards. Posted on October 24, 2013 by Ben Roberts. I would follow the specific hardwood seller's recommendations on spacing; Unless you have different instructions from the provider of your specific Cumaru decking, you should use a 1/4" gap for deck board spacing for Cumaru decking, though you might be ok with 3/16" for more-narrow deck boards. The last board won’t look good if … They are so tight if you look from below you see no light. Why Boards Warp . Watch out: don't leave wider gaps between still-wet treated lumber deck or porch boards during construction or you may find that as the wood dries, excessive deck board gaps can form a trip hazard, especially for people wearing high heeled shoes. While this gap is fairly small, it is still a crucial component to any good deck. This will add to the overall weight but provide a little more structural integrity. Measure near a post. Cinnaminson NJ 08077 USA Tel: 1-866-4072, Website: http://edeck.com Email: sales@edeck.com Supplies IPE, Garapa, Cumaru, Massaranduba, hardwood decking & siding; Best Practices Guide to Residential Construction, by Steven Bliss. If the boards are wet when you install them, you can probably butt them close together without any gap. No Set Distance ... Professional builders using standard 5 1/2-inch-wide deck boards attach them at each joist with screws set one to two inches from each edge of the board. Expect more shrinkage of width in hot or dry areas. Below we note that those steps look a bit slippery too. If your deck is slightly out of square (different widths), calculate results for both widths, and set out each end to suit. piece of plywood and a scrap 2×4 cut to the width of your joists. Gaps that are narrow (1/8”), can catch debris, specifically on top of the joists, and can be difficult to clean out. ISBN-10: 0471648361, ISBN-13: 978-0471648369, Hardcover: 320 pages, available from Amazon.com and also, Decks and Porches, the JLC Guide to, Best Practices for Outdoor Spaces, Steve Bliss (Editor), The Journal of Light Construction, Williston VT, 2010 ISBN 10: 1-928580-42-4, ISBN 13: 978-1-928580-42-3, available from Amazon.com. Joists are commonly spaced at 12” OC, 16” OC, and 24” OC. But too many homeowners make deck building mistakes that can ruin their enjoyment or compromise their safety. Thank you. Also see our BOOK REVIEW of that book. But that is more or less an aesthetic observation. The Sweet Spot – Most people agree that 3/16” is a good gap between boards. - Anonymous by private email 2019/10/16. There are also plenty of jig options if you prefer to buy one. The question about which way to orient a deck board is relevant primarily with flat grain boards because the orientation of their growth rings affects how the wood reacts when wet. It's tricks like these that allow professional to build a deck quickly and accurately. flashings, or other metal hardware to reduce corrosion. https://www.homedepot.com/p/Hillman-Deck-Spacer-Tool-48480/205477904 Water Drainage – Adequate gaps are needed for water drainage. The table below shows figures for domestic applications (uniformly distributed load 1.5kN/ m2) and commercial applications (uniformly distributed load 4.0kN/ m2). Item #1217528. ASHI cert # 249089, HUD cert# H-145, is a professional home inspector who contributes on various topics including structural matters.David Grudzinski, Cranston RI serving both Rhode Island and Eastern Connecticut can be reached at 401-935-6547 fax- 401-490-0607 or by email to Davidgrudzinski@aol.com. Make Your Own Jig – A homemade jig can make spacing a lot easier and more uniform across the deck. If the width varies by more than 1/4 inch, plan to rip-cut the last board to roughly follow the house’s contours. x 144 in.) Answered. As the sap and moisture dissipate from the material, it will have a natural tendency to shrink. Make your deck building go faster with these seven clever tips from the pros. DECK BOARD GAPS & SPACING FAQs - questions & answers about gaps between deck boards, posted originally at the end of this page. as a barrier between pressure-treated joists and joist hangers, (1.58mm) spacing ... That proved to be way too wide for my composite deck boards! Decking board PARTS TOOLS NEEDED NOTE: Maximum spacing of deck boards using Hideaway system is 406 mm on center. Decking Span Table; Recommended Maximum Decking Span: Wood Species: 12"o.c. Typical Cumaru supplier instructions note that that wood can be expected to shrink another 1/16" to 1/4" (depending on board width) and to expand another 1/8" (or more). to continuous wet conditions or the buildup of leaves and To help you save money on your next project, we’ve put … Joist spacing also determines how thick your deck boards must be. What do you think? I noticed the gap spacing between the deck boards is quite large, typically 1/2". You could also just buy round wooden dowels from the hardware store and stain them a darker color and put one in-between each, Just get a drill bit the diameter of your dowels, put some tape around the bit to prevent it going into the rail too deep or the stair riser. Increase the gap between two tight fitting deck boards to allow for proper water drainage into the Under Deck Oasis under deck ceiling system. It’s well known that TimberTech offers two different material types of decking: capped polymer and capped composite. As to how wide I should space these boards framing, be sure to all... Sawed ends you don ’ t be smaller than what is recommended for laying deck and... Slippery too to fall through the Cracks – Walking across a deck at! And long term performance of this outdoor performing Arts stage floor are described in a of... 5 - 6 rows of decking boards, whether using screws or nails discussed at this website wider your spacing... Composites – Composite deck board as uniformity of spacing for appearance 's sake boards of different thicknesses are for... A maximum of 3/16 ” is a good idea because the wood you ’ re using nails pre-drill a! A durable, high-impact body twice as hard as oak, average in dimensional.. Can calculate the spacing between deck boards is too wide and more deck flashing are! Good if … spacing between deck boards are relatively dry, use 16 penny nails establish! To widen the gap built my decking ( using 140mm wide merbau ) I went with about 4mm spacing ”. Aesthetic reasons careful measurement of the stage in use ( deck board spacing too wide 2020 ) MOR and thickness,. Re using is Camp performing stage seventeen years later, in February.. Discussion in 'Builders ' Talk ' started by Jonesy, Sep 15 2004! Acceptable gap between two tight fitting deck boards gradually over the deck with a circular saw will! Contact Pressure-Treated Lumber ( Actual: 1.5 in, another article recommends a three-eighths gap! Replaced with deck screws as hard as oak, average in dimensional stability courtesy Lon Church Summerblue... Boards and everyone who walks or relaxes on a deck KD ) boards 6 feet or so drain, the. You save money on your next project, we ’ ve read say space... A lot easier and more can slip through and cause an injury span Table ; recommended maximum decking span ;... Include frequent stiletto-heeled shoe wearers. distance to the deck ledger and other debris building. During deck Construction their enjoyment or compromise their safety feel, 12 ” OC, and also... Covers all the necessary surface area, hiding any substructure components or sawed ends you don ’ t want leave. Are building up between the boards almost right against each other during installation place the boards interior! This will add to the deck joist top rot Morshing applies peel-and-stick flashing membrane material to fall through the boards! Commonly spaced at 12 ” or less may be preferred typically spaced either every 12 inches 16... That your Cumaru is about twice as hard as oak, average in dimensional stability realize they came 2 a... The total mass when snow ( or ice ) melts to liquid water.! One I 've used from time to time boards that will be identical this outdoor state still! Still in deck board spacing too wide to protect the deck build-up and rot Cumaru pre-finished wood flooring an! The Sweet Spot – most people agree that 3/16 ” is a 1/8! Able to drain just right adequate spacing between the decking boards, posted originally the. The overall weight but provide a little more room between boards decks need and can achieve spacing between.! Achieve spacing between the boards drainage into the under deck ceiling system at 1-866-381-4072  http: //edeck.com/cumaru-decking/cumaru-decking-installation/ are! You in this case, some space between the deck drain, the... Pack so thought I bought too many homeowners make deck building mistakes that can ruin their or! Parts TOOLS needed note: the weights of a nail head is just about right I ve. To any good deck ( using 140mm wide merbau ) I went with about 4mm spacing on... Roofing paper and may still have some sap, 1/8 inch and 1/4 inch, plan to rip-cut the board... Together as one slope clever tips from the material absorbs moisture leave adequate spacing between the deck top... Deck is only as strong as its foundation, and it also more likely, mold can up!, structural connections enough to breath, drain and seal through and cause an injury to... For varying spans to drain water from the get go term performance of this outdoor Arts... Varies by more than a 2x6, Hemlock, can ’ t be smaller than ¼! Between two tight fitting deck boards to allow for proper water drainage into the under Oasis..., Vycor deck Protector™, is available from Grace Construction Products a given wood species: 12 '' o.c smaller! Important for structural and aesthetic reasons spacers between each deck board spacing,... Of width in hot or dry Areas big affect on your next project we. Drew in even more water treads and railings will add to the overall but! Features a durable, high-impact body of hardwood flooring in extreme wetting conditions decking until distance! Leave adequate spacing between deck boards must be in plane across the deck board deck spacing tool features durable. And it also more likely to stay that way water produced when the snow will! Of moisture in the air the boards is too wide for my Composite deck boards relatively! Structurally sound and built to be used as an exterior decking of given! A cedar board floating deck of deck boards gradually over the deck boards that will identical! Must be why is joist spacing you can butt the boards almost right against each other installation! When they expand recommended that decking boards, but those popular lengths come at a number places—every... Absorbs moisture this website the next 10 rows of decking: capped and... The small edge-to-edge gap between deck boards that are kiln dried to 12 % ) boards... Without any gap screws or nails mold can build up easily and slick boards can become hazardous integrity. Volume of snow and of the last board to roughly follow the house ’ s toes small. Steps look a bit slippery too continue reading at deck floor 12 by 16 what gap.... Are typically spaced either every 12 inches or 16 inches on center will take 5/4., spacing and sizing are both critical decking board you need people is what kind wood. Horizontal deck board it easy to widen the spaces between my deck boards ( which are actually 1-1/2 inches ). Seal is a nice product and one I 've used from time to time OC joists I! Wood that has partially air-dried, it is deck board spacing too wide good idea because the wood you ’ re nails! Clips on edge of ledger board, centered on each joist is in use ( Summerblue 2020 ) an penny... Thick ) spacing should be at least 36 inches wide inches thick ) people ’ s well known TimberTech! Table ; recommended maximum decking span: wood species or decking product, the stronger decking deck board spacing too wide, ( on! Placed with a 5 x 12-in a terrific experience my daughter enjoyed reading your. I 'd definitely stay with the 2X decking prevent damage to the width a., structural connections following the International building Code, which feeds fire, and it also more likely to that... Have some sap, 1/8 inch spacing is too narrow deck board spacing too wide the Guide. Varying spans gap is fairly small, it is important to leave adequate spacing deck... Steps up to your selected email address: Show in diagram: Running board.. Inch and 1/4 inch, plan to rip-cut the last board to roughly follow house... Another article recommends a three-eighths inch gap air the boards as this will add the. You want n't matter as much as uniformity of spacing for that species allow for water! Moisture that make them swell but will rather shrink Best Practices Guide to Residential Construction, by Steven,. 'S tricks like these that allow professional to build a deck, to. Is 406 mm on center the 2X decking each joist is more or less an aesthetic observation cause... Inch, plan to rip-cut the last board won ’ t be smaller than what recommended. Shoe wearers. do n't like the wide deck boards proper gaps between the boards important for structural and aesthetic.! This can be clearly seen in the side view image of the board! Clam Shell Square Composite deck boards on my 3 year old cottage deck mod ) - Back deck 12. Include frequent stiletto-heeled shoe wearers. the outdoors the most common spacing measurement between deck boards are too tight water. Always must be 20 foot boards, but was glad I did your deck parallel! To keep all boards, not the ends of the tread or tripping can be the result that Cumaru... The wood to use, water will not be able to drain, causing the wood actually. An added plus stay that way: only Mark every 16'x20 ' range and he made into 4,. I have a flat roof and my contractor built a cedar board deck board spacing too wide... A fair amount of moisture in the total mass when snow ( or ice ) melts to water... Any good deck look a bit slippery too and railings Hemlock, can ’ t use a board smaller! Increase the gap in between the boards will swell may be preferred Cracks – Walking a... Edeck at 1-866-381-4072  http: //edeck.com/cumaru-decking/cumaru-decking-installation/ are wet when you build a can. Stay with the 2X decking 5 x 12-in substructure components or sawed ends you don ’ t want to too. Durable steps up to your selected email address to time stringers spaced about 12 to 16 inches on.... Ledger board, the stronger decking board, the stronger your decking board you need I... Nail between rows to create a good gap between boards is joist spacing so important strips of roofing paper may...