
For example, if your project calls for 80 boards for 800 square feet, add another 40 square feet for waste, or four extra boards. The general rule of thumb is that you need 5% extra decking material to account for waste and mistakes. Step 5: Calculate the Number of Deck BoardsĪnticipate having waste on your decking project. Always leave room for extra boards, too, for the waste on the project after cutting them to the right angles and lengths. Some boards will need to be cut at an angle to make them fit together correctly. You'll need a saw to cut composite deck boards as you assemble your deck properly.

You’ll also need to know the length of each board to calculate the overall size of your deck. Trex boards come in 12’, 16’ and 20’ lengths. The lengths of the decking boards usually range from 8’ to 20’. Step 4: Understand the Length of Each Board Grooved-edge boards allow you to use the Trex Hidden Fastener for a cleaner surface appearance. All three decking collections come in square-edge and grooved-edge. Transcend and Select boards also are available in a 2圆 dimension, or 1.3” x 5.5”. 94” x 5.5” and the 1” Select® boards are. The 1” Transcend® and Enhance® boards are. Trex composite deck boards are manufactured in three widths. Step 3: Figure Out the Square Footage of Each Board Can’t find one that you are in love with? You can customize each of our deck plans or start from scratch with our Deck Designer tool.
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Take a look at our free deck plans to see some of our most popular deck shapes. You can choose a hexagon, pentagon, octagon, or whatever shape you like within the space you have. Take great notes, and even make a design sketch, if you haven’t already, to see how your measurements will pan out. Grab a buddy and use a 25-foot tape measure to give substance to your vision. Take into account any extra angles, nooks, crannies and staircases in your calculations.

Step 1: Determine the Square Footage of the DeckĬalculate the overall length and width of your deck design. Let's get started with these eight easy steps.
