how to calculate number of decking boards

Be sure to account for any uneven areas, angled edges or other non-perpendicular spaces. If your width is 6m and your depth is 2m 6(w) x 2(d) = 12sqm. Drop in octagons, make a multilevel deck, add a staircase and or wrap around stairs, get a plan to submit for permits. The joist used for the framing should be 2-inches x 8-inches or larger. With an extra 15 percent, you should be prepared for potential mishaps. For instance, if your deck is 20 feet long by 10 feet wide, its area is 200 square feet. In any case, you should always purchase a bit of extra material to account for damage or errors. I know I’m a DIY amateur Sometimes it’s better to leave things to the experts. We will assume that the rectangular / square decking area is going to be laid at ground level with no raised sides. Lumber calculator formula. You need to calculate how many deck boards are needed for the deck. BACK NEXT. Total Number of Boards = DSA / (SBC X 1.1) Calculate How Much Deck Material You Need For Your New Deck. If you intend to cover the deck with 2 inch by 6 inch boards, you will add the width of the board plus the width of any opening you plan to leave between the boards. A wooden deck is really nothing more than an outdoor floor. Area To Cover (Length) * input to one decimal place. Thank you for using our decking calculator. Depending on the manufacturer, the spacing of these can vary, but they often lie in the range of 1/8 or 5/32. 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 … 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. Also, see if you have to pull permits. 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 ? Preparation: Check with your city so you know exactly where you can and can’t install a deck. Design the deck of your dreams with our new deck design software. Area To Cover (Width) * input to one decimal place. This helps prevent rot and decay over time. Footers should be set 6 inches deeper than the frost line for your area. Your calculation should look like this: “Overall width of the deck in millimetres” / “decking board width in millimetres + spacing between decking boards in millimetres” = the number of rows of decking boards required. As a general rule of thumb, lumber decking should be installed with gaps of between 1/8 and 1/4 of an inch. If you are using 2-foot by 4-foot boards, for instance, the square footage of each board is 8 square feet. Calculate Sheathing Needed. She also runs her own lifestyle blog, Sweet Frivolity (www.sweetfrivolity.com). Typical spacing for KD / Kiln Dried Decking is 1/4" for 6" boards and 3/16" for 4" boards. Calculate the decking required based on the actual width of the boards you will use, and determine how many boards you’ll need according to square footage. we will start with this then move on to more advanced decking plans. Fixings relate to the approximate number of screws required per m 2. Boards (includes 10% coverage) Email this estimate Veranda composite decking with SE, square edge designation must be installed with approved composite decking screws. If you were to use 25 boards, 23 of them would have a 1/8-inch gap, but the outer two pieces would not. Use Our Free Deck Design Software. Calculator Details. To calculate the area, multiply the length of the deck by the width of the deck. If you're not opting for timber decking, or are looking to use timber boards in a different size than that referenced in the table, have a go with our decking equation. It is best to start by working out how many rows of decking boards are needed. Step 2. Calculating Material Requirements. 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. Wood substructures split, warp and shift, leading to an uneven surface in the deck boards above. 515.9m ÷ 3.0m = 171.96 decking boards. 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. These easy fit decking kits are just that! Some composite boards use hidden fasteners rather than screws. Required fields are marked *. Our calculator works out the board feet of standard three dimensional wood material based on the measurements you provide. Now we have the figure for the total lineal metres of decking boards we need to order. Using the previous example your calculation would be: 32 x 5 x 1.1 = 176 lineal metres. This calculator works out the joists at 500mm centres and nails are added pick 47 x 100 or 47 x 150 both will do the job but 47 x 150 is recommended if you are raising the deck from ground level . As a general rule of thumb, you should leave at least 1/8-inch of space between composite boards. Then find the closest sqm to what you require. To simplify the process, we’ve created this deck stair calculator to help you determine the correct measurements needed to carry out your project. 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 …  We would then round this figure up to the nearest whole number. Width in inches divided by 5.65 = Number of deck boards. Then divide the width of the deck by the width of your decking boards plus the gap between the decking boards, which is recommended to be 3-4mm. 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. (It is always best to round up the answer to the next whole number.). Step 2: Determine Plank Length. If you want the decking raised pick the height from the drop down box, this height is from ground to top of the deck. Put this together with our own friendly national delivery service and you're on to a winner! Next, we need to work out the total lineal metres of decking required. She holds a Master of Science in Publishing from Pace University. Over time, this can lead to buckling if proper gaps were not left. How To Build A Deck View All D.I.Y. If your deck is largely rectangular or square and then has a side piece, calculate those two areas separately and then add them together. Step 4. This deck will require 32 rows of decking boards. A joist is the skeleton bones of the deck. Step 3. The simplest & easiest to calculate of decking plans is the single rectangle / square. It can be a little tricky if you want to do everything yourself. Cutting your decking boards neatly around posts. Calculate number of deck boards. 4" wide material is calculated at 3-5/8" and 6" at 5-5/8" net coverage. Please enter and select your measurments, then click calculate to view a product list needed for your deck. 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. An email has been sent to your selected email address. Since the deck is 20 feet long, the square footage of the gaps is 3 inches by 20 feet – or 5 square feet. 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 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. Which width of decking board would you like? 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. advice . Determine size of deck and direction of deck boards. 70mm* 90mm. So, dividing the area of the roof by 32 will give you the number of sheets needed. In order to use our coverage calculator, all you need to know is the Square Footage of your deck, Board Width, and floor Joist Spacing that you are using for your deck. the width of the decking board (inches) The Results. Always refer to the manufacturer's instructions before proceeding. Working out how many timber decking boards to buy. Make sure to account for the gap between boards. Air dried material is typically spaced at 1/8" edge to edge. Deck Board Fastener Calculation. Because this square footage is less than one board's square footage, you might still wish to purchase 25 boards. http://www.restumping-melbourne.com.au/build-best-backyard-deck-around/, Measuring and taking photos of your footings. For the deck size example provided above, of 200 square feet, you would need 25 boards of this size. Deck footings: How deep to dig deck footings? How to use the Decking Calculator: Firstly work out your sq metre coverage by multiplying Width x Depth. You will be designing in no time. Save my name, email, and website in this browser for the next time I comment. Rely on manufacturer recommendations for spacing whenever possible. You'll need the dimensions of the deck boards you hope to use. Now, multiply this result by the number of pieces to obtain the total board … Step 3: Divide by Plank Length. First, you will need to determine the area of your deck. Now we can calculate the number of decking boards needed. Calculating How Much Material to Purchase You'll need the dimensions of the deck boards you hope to use. By creating an account you agree to the Hunker, Inch Calculator: Deck Flooring Calculator and Price Estimator. Changes in heat and temperature can cause composite deck materials, especially those that are hollow, to shrink or expand. For more detailed information on how to calculate decking board quantities and how to install your decking boards correctly; you can purchase your own copy of our “Installing decking boards” guide or you may like to visit the “Resource Shop”, Hi need to work out a price on 10m x 10m decking. Once you have constructed the support and structure of your deck, calculating the necessary surface material is fairly simple. 20 ft. If the deck is to overhang the supports, refer to your original design plans to determine the measurements of each side. 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. This calculator will tell you the size of the joist boards necessary based on the square footage of the deck. Calculations assume 1/8" spacing edge to edge between boards. We take the linear metre measurement and divide it by the length of board you are going to use. For this example, we will say the planned deck will be 16 feet by 14 feet. Your email address will not be published. But the gaps between your boards must be taken into consideration, too. Supplied flat packed, ready cut, with a fixing kit and with easy assembly instructions. Hunker may earn compensation through affiliate links in this story. Decking Length (meters) * Decking Width (meters) * Calculated Results. Multiply the “number of rows” by the length of the deck – again ensuring to allow for the fascia and the overhangs on both sides of the deck. Enjoy building your deck! The joist is what holds the planks on your deck in place. Having the right calculations before getting started can make the task a lot easier. If you are using 2-foot by 4-foot boards, for instance, the square footage of each board is 8 square feet. See your deck in 3D then get a plan and suggested material list for your project. (adsbygoogle = window.adsbygoogle || []).push({}); To calculate decking board quantities required to build a deck is relatively simply process. If you’re brand new to deck installation, follow the steps below to ensure you buy the correct quantity of all materials: 1. Building stairs for your deck is often considered “the most difficult part of” the construction project. Step 1. Hi Mario, how wide are your decking boards going to be? Afterward, you're going to measure the length and width of each of the deck boards. 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. A 4×8 sheet of plywood is 32 ft 2. If your supporting structure is the same size as your deck, you can use measurements of it for this step. Please choose an option * Only Finger Jointed boards available. Eg. Simply enter your measurements into the timber decking calculator / timber flooring calculator below for a great estimate of the timber boards you’ll need, fully costed. Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed. However, you will need to consider not only the size of the boards used but also the spacing between them as this will also take up space. Your email address will not be published. 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). Material quantity calculations are approximate and based on using full lengths of decking boards, measuring 4200x125mm (LxW), with a 5mm gap between each board when installed. That creates approximately another 3 inches width-wise that you wouldn't need material to cover. I suggest and recommend allowing 10% for waste. Let's calculate the square footage of one decking board: 8 ft * 0.5 ft = 4 ft². The dimensionally stable steel of Trex Elevations stays in place, giving you consistently stronger, straighter, safer and smarter decking than what wood can offer. The dimensionally stable steel of Trex Elevations stays in place, giving you consistently stronger, straighter, safer and smarter decking than what wood can offer. For the deck size example provided above, of 200 square feet, you would need 25 boards of this size. Decking Area (sq m) Decking board Length (m) 100mm x 47mm Joist at 450mm Centre (m) This depth will determine how much concrete you need and how long your footers should be. How to Calculate the Framing Size for a Deck. Wood substructures split, warp and shift, leading to an uneven surface in the deck boards above. 140mm. Step 1: Determine Square Footage. For example, is your deck close to the ground or more than 1m off the ground which would need a handrail. 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