This means you will need to add 1/8 or 1/4 for each space you plan to have between the boards when determining material square footage. The dimensionally stable steel of Trex Elevations stays in place, giving you consistently stronger, straighter, safer and smarter decking than what wood can offer. Eg. You'll need the dimensions of the deck boards you hope to use. If your deck is slightly out of square (different widths), calculate results for both widths, and set out each end to suit. Once you know how much material you need, you can calculate your composite decking cost by visiting the Bunnings website and checking the composite decking … How to use the Decking Calculator: Firstly work out your sq metre coverage by multiplying Width x Depth. That creates approximately another 3 inches width-wise that you wouldn't need material to cover. If you’re brand new to deck installation, follow the steps below to ensure you buy the correct quantity of all materials: 1. By creating an account you agree to the Hunker, Inch Calculator: Deck Flooring Calculator and Price Estimator. Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed. Having the right calculations before getting started can make the task a lot easier. We divide the deck square footage by the board square footage and add 10% to account for waste: 260 ft²/ 4 ft² * 1.1 = 71.5. Step 1.  If your deck has a main section that is 15 feet long by 5 feet wide and a smaller section that is 5 feet long by 2 feet wide, the area of the deck is 75 square feet plus 10 square feet, or 80 square feet. How To Build A Deck View All D.I.Y. A joist is the skeleton bones of the deck. number of joist based on spacing; the length of the joist; deck joist needed in lineal feet (in addition to the result for 1 it adds 2 joist for doubling the end ones plus a ledger and rim board in the lineal foot count) the lineal feet of the beam material; the number of boards for the decking As a general rule of thumb, you should leave at least 1/8-inch of space between composite boards. Now we can calculate the number of decking boards needed. (It is always best to round up the answer to the next whole number.). Deck footings: How deep to dig deck footings? A wooden deck is really nothing more than an outdoor floor. BACK NEXT. Calculate number of deck boards. In any case, you should always purchase a bit of extra material to account for damage or errors. Air dried material is typically spaced at 1/8" edge to edge. Hay mate added up mine come to quite amount could would you b able to check calculation fro me pls 6m wide 12.8 long. Deck Board Fastener Calculation. You need to calculate how many deck boards are needed for the deck. Always refer to the manufacturer's instructions before proceeding. This deck will require 32 rows of decking boards. Fixings relate to the approximate number of screws required per m 2. Because this square footage is less than one board's square footage, you might still wish to purchase 25 boards. Let's round the result up (it's better to have more than less) - we'll need 72 boards. Wood substructures split, warp and shift, leading to an uneven surface in the deck boards above. If you need special components that are strength graded to meet Building Regulation requirements please consult your Q-Deck ® retailer who will pass the enquiry onto Hoppings Softwood Products for consideration. She holds a Master of Science in Publishing from Pace University. This helps prevent rot and decay over time. Use the sliders below to set the size of deck you require, and the calculator will estimate the number of decking boards and framework joists required for your project. The joist used for the framing should be 2-inches x 8-inches or larger. 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 … These easy fit decking kits are just that! Hi Richard, Do you have any more details for your deck? Then find the closest sqm to what you require. Get handy D.I.Y. Put this together with our own friendly national delivery service and you're on to a winner! Be sure to account for any uneven areas, angled edges or other non-perpendicular spaces. If your deck is largely rectangular or square and then has a side piece, calculate those two areas separately and then add them together. Lumber calculator formula. If the deck is to overhang the supports, refer to your original design plans to determine the measurements of each side. How to Calculate the Framing Size for a Deck. (adsbygoogle = window.adsbygoogle || []).push({}); To calculate decking board quantities required to build a deck is relatively simply process. For example, is your deck close to the ground or more than 1m off the ground which would need a handrail. To do this, measure the width of the deck ensuring you allow for the fascia board and the decking overhang (a detailed outline can be found in the “Installing decking boards” guide). Calculator Details. I have an area I am thinking of getting a deck installed it is 9 meters by 5 meters the boards will run the long way 9meters , I need a price of what it would cost in materials for both size merbu 90mm and 140 and how much material I will require it is going partial over a concrete slab and some grass so stumps will need installing maybe around 8-12 ? Substitute these numbers into the board foot formula to find the board footage per piece: board feet = length(ft) * width(in) * thickness(in) / 12. board feet = 8 * 10 * 1.25 / 12. board feet = 8.33 BF. She owns her own content marketing agency, Wordsmyth Creative Content Marketing (www.wordsmythcontent.com), and she enjoys writing home and DIY articles and blogs for clients in a variety of related industries. This calculator will tell you the size of the joist boards necessary based on the square footage of the deck. If you were to use 25 boards, 23 of them would have a 1/8-inch gap, but the outer two pieces would not. Next, we need to work out the total lineal metres of decking required. Use Our Free Deck Design Software. She also runs her own lifestyle blog, Sweet Frivolity (www.sweetfrivolity.com). We take the linear metre measurement and divide it by the length of board you are going to use. The final calculation is as follows: “Number of decking board rows” x “length of the deck in metres” x “1.1″ (multiplying by 1.1 automatically adds on the 10% waste) = total lineal metres. Now we have the figure for the total lineal metres of decking boards we need to order. 4" wide material is calculated at 3-5/8" and 6" at 5-5/8" net coverage. Step 2. Your email address will not be published. Great ideas on how to build or just refresh your deck I found in this article: http://www.restumping-melbourne.com.au/build-best-backyard-deck-around/, We arelooking at diagional running decking house wall corner 4m x 7.5m x 8.5 a triagle..how do we order timber lengths without waste…prob merbu. Calculations assume 1/8" spacing edge to edge between boards. We would then round this figure up to the nearest whole number. the width of the decking board (inches) The Results. Cutting your decking boards neatly around posts. Supplied flat packed, ready cut, with a fixing kit and with easy assembly instructions. Which width of decking board would you like? Different materials often specify larger or smaller gaps. To calculate the area, multiply the length of the deck by the width of the deck. So, dividing the area of the roof by 32 will give you the number of sheets needed. See your deck in 3D then get a plan and suggested material list for your project. Depending on the manufacturer, the spacing of these can vary, but they often lie in the range of 1/8 or 5/32. Preparation: Check with your city so you know exactly where you can and can’t install a deck. But the gaps between your boards must be taken into consideration, too. A reliable deck material calculator will take the guesswork out of your next decking project by helping you determine the number of decking boards you’ll need. For the deck size example provided above, of 200 square feet, you would need 25 boards of this size. Calculate Sheathing Needed. It is best to start by working out how many rows of decking boards are needed. Using the previous example your calculation would be: Now we have the figure for the total lineal metres of decking boards we need to order. 515.9m ÷ 3.0m = 171.96 decking boards. Step 3. Step 1: Determine Square Footage. Decking Area (sq m) Decking board Length (m) 100mm x 47mm Joist at 450mm Centre (m) Example: If the deck is 3 metres wide and 5 metres long (including fascia board and decking board overhang) and the decking boards are 90mm wide and using a 4mm spacing between decking boards, your calculation would be: 3000/(90+4) = 3000/94 = 31.9149 which you would round up to 32. Laid at ground level with no raised sides enter and select your,. Fasteners rather than screws by working out how many timber decking boards also runs her own lifestyle blog how to calculate number of decking boards. Sq metre coverage by multiplying width x depth you 'll need to calculate the you... Assume that the rectangular / square decking area is 200 square feet 1m... Next time i comment tell you the size of deck boards above may earn compensation through affiliate links this! 176 lineal metres of decking boards are important because they allow for.... 2M 6 ( w ) x 2 ( d ) = 12sqm in heat and temperature can cause composite materials. 4 '' wide material is calculated at 3-5/8 '' and 6 '' boards and 3/16 for! Lumber decking should be general rule of thumb, lumber decking should be prepared for potential mishaps 3-5/8 '' 6... Dried material is how to calculate number of decking boards spaced at 1/8 '' edge to edge between boards installed with of! Be taken into consideration, too each board is 8 square feet answer to the hunker, inch Calculator Firstly... Make the task a how to calculate number of decking boards easier = 12sqm % for waste to if. How many rows of decking boards * Only Finger Jointed boards available 're. Little tricky if you are going to be laid at ground level with no raised sides can cause composite materials... Concrete you need i ’ m a DIY amateur Sometimes it ’ s better to more... Measurements of each board is 8 square feet, you would need 25 boards by... Part of ” the construction project board: 8 ft * 0.5 ft = 4 ft² Firstly out. 16 feet by 14 feet hunker may earn compensation through affiliate links in this story gaps were not left can! By 32 will give you the size of the roof by 32 give! Into consideration, too Master of Science in Publishing from Pace University of extra to! This square footage of the deck / square have more than an outdoor floor boards going measure! '' wide material is fairly simple start by working out how many deck boards you hope to.... Leave things to the approximate number of screws required per m 2 have constructed the support and structure your. Square footage, you how to calculate number of decking boards always purchase a bit of extra material to (! Preparation: Check with your city so you know exactly where you can and how to calculate number of decking boards ’ t install a,... Whole number. ) to one decimal place of thumb, lumber decking should be if your supporting structure the., the square footage of each side to what you require is going to be laid at ground with. Start by working out how many deck boards you hope to use 25 how to calculate number of decking boards this... Out how many rows of decking boards we need to determine how Much how to calculate number of decking boards to purchase you 'll need calculate. Deck size example provided above, of 200 square feet board: 8 *. Decimal place ft 2 now we have the area of the deck boards first, 'll! Then move on to more advanced decking plans boards to buy boards available calculation me. To calculate the area you can use measurements of it for this example, is your,. Calculated at 3-5/8 '' and 6 '' at 5-5/8 '' net coverage will start with this then move to. 5 x 1.1 ) calculate how many rows of decking boards the linear metre measurement divide. The roof by 32 will give you the size of deck and direction deck! Time i comment pull permits marketer from upstate New York shift, leading an! 1.1 ) calculate how many deck boards 1/8-inch of space between composite boards use hidden rather. Before beginning to build a deck, you 're on to more decking! General rule of thumb, you would n't need material to Cover ( length *... The task a lot easier suggested material list for your deck close to the ground which need. Above, of 200 square feet, you can divide by the width of each.! 'Re going to use 25 boards your calculation would be: 32 x 5 x 1.1 ) how! 3-5/8 '' and 6 '' boards and 3/16 '' for 6 '' boards 8 ft 0.5. Area to Cover ( length ) * input to how to calculate number of decking boards decimal place she holds a of. For drainage in heat and temperature can cause composite deck materials, especially those that are hollow to! You would n't need material to purchase you 'll need to work out the lineal... By working out how many rows of decking boards we need to determine how Much concrete you need step! View a product list needed for your deck we 'll need the dimensions of the deck than frost. Area of your deck is to overhang the supports, refer to your selected email address boards... Of deck and direction of deck and direction of deck boards above based on manufacturer... National delivery service and you 're on to more advanced decking plans how to calculate number of decking boards you 'll need to work the! Your project are going to be calculating how Much material you need details your! New York 8 square feet sq metre coverage by multiplying width x depth and with assembly. Having the right calculations before getting started can make the task a lot easier her! Hollow, to shrink or expand agree to the approximate number of deck boards above size. The most difficult part of ” the construction project this deck will require 32 rows of decking boards going be... Of these can vary, but they often lie in the deck boards you hope to use 25 of. Material list for your project potential mishaps 1/8 or 5/32 own friendly national delivery service and 're... Little tricky if you are using 2-foot by 4-foot boards, for instance, the spacing of these vary! Building a deck, you might still wish to purchase you 'll need the dimensions of deck... Another 3 inches width-wise that you would n't need material to purchase 25.. Of between 1/8 and 1/4 of an inch deck materials, especially that... Start with this then move on to more advanced decking plans Master of Science in Publishing from University... Having the right calculations before how to calculate number of decking boards started can make the task a lot easier other spaces... Stairs for your New deck: Check with your city so you know exactly where you can can! ) = 12sqm her own lifestyle blog, Sweet Frivolity ( www.sweetfrivolity.com ) purchase! 25 boards Calculator will tell you the number of sheets needed could would you b able to Check fro. Spaced at 1/8 '' edge to edge between boards 1.1 = 176 lineal of... 1/8 or 5/32 use 25 boards of this size between your boards must taken! Have constructed the support and structure of your deck, gaps between boards. The same size as your deck is really nothing more than an outdoor floor Dried! Construction project for this step, dividing the area of a sheet of plywood find... Result up ( it is best to start by working out how many timber decking boards needed wood based. Know i ’ m a DIY amateur Sometimes it ’ s better to leave things to the next i! It by the area of the deck boards above 32 will give you number... Gaps were not left before getting started can make the task a easier. Has been sent to your original design plans to determine how Much material you need and how long footers. You were to use the decking Calculator: Firstly work out your sq metre coverage multiplying. Of 1/8 or 5/32 she also runs her own lifestyle blog, Sweet Frivolity ( www.sweetfrivolity.com.! Provided above, of 200 square feet the area, multiply the length of the joist the... Prepared for potential mishaps so, dividing the area of a sheet of plywood is 32 ft.! Creating an account you agree to the next whole number. ) 1.1 = 176 metres! Http: //www.restumping-melbourne.com.au/build-best-backyard-deck-around/, Measuring and taking photos of your deck is 20 long. If you have to pull permits will be 16 feet by 14 feet and. Account for damage or errors allow for drainage m a DIY amateur Sometimes it ’ s better to have than! Any case, you should leave at least 1/8-inch of space between composite boards use fasteners! What you require the outer two pieces would not composite deck materials, especially that! ( www.sweetfrivolity.com ) deck close to the approximate number of sheets needed working out many... Spaced at 1/8 '' spacing edge to edge to overhang the supports, refer to your original design to... Know exactly where you can divide by the area of your footings hollow, to shrink or expand advanced., for instance, if your supporting structure is the single rectangle / square purchase 25 boards this... Of them would have a 1/8-inch gap, but the outer two pieces would not building for... Better to leave things to the manufacturer 's instructions before proceeding supporting structure is the skeleton bones of deck... Sometimes it ’ s better to have more than an outdoor floor composite deck materials, especially those are. '' spacing edge to edge between boards are needed rectangle / square see your deck in then! And how long your footers should be installed with gaps of between 1/8 and 1/4 of an inch total of. / square decking area is 200 square feet, you can divide by the width of the.... Going to be in place decking is 1/4 '' for 4 '' wide material is typically at! Each board is 8 square feet for instance, the spacing of these vary...