How to calculate composite fencing

3rd Mar 2024

How to calculate composite decking

Hey! Are you excited to explore the realm of composite decking? This blog will guide you through the process of calculating composite decking so you can tackle your project with ease. Whether you're an experienced DIYer or a beginner, we've got you covered. From measuring your deck's dimensions to determining the correct amount of deck boards needed, we'll take you through each stage. So grab a drink and get prepared to master the art of calculating composite decking like a pro! Let's get started!

MARCH, 2024

Step 1- Measure the dimensions 

Start by measuring the length and width of the area where you plan to install the composite decking.

Step 2- Determine the Decking board widths

The composite prime decking boards we stock are XS and Dual you plan to use. The XS are 146mm wide and the Dual are 143mm wide

Step 3- Calculate the number of boards 

Divide the total square metre of your deck by the widyth of the compoite decking boards. This will give you the apporximate number of boards needed for your project. Remember to account for any extra boards needed for cuts and waste.

Step 4- Accounts for joists and spacing 

Please take into consideration the quantity of joists required to uphold your composite prime decking boards. The gap between joists usually varies from 16 inches to 24 inches, depending on the manufacturers' recommendations. To determine the number of joists needed, divide the length of your deck by the chosen spacing.

Step 5- Include Fascia Boards

To determine the required number of fascia boards for your deck, it is essential to measure the length of each side and calculate the total linear meters. This will assist in accurately estimating the quantity of fascia boards needed for installation around the perimeter of your deck.

Step 6- Add fasteners and accessories

Please ensure that you consider any supplementary materials, such as screws, clips, and other fasteners, that are necessary for the installation. Refer to the diagram provided below to get a general idea of the quantity required.

Step 7- Consider with professionals

For precise calculations and to guarantee you have all the essential materials, it is advisable to seek advice from experts. You can visit our recommended contractors page or refer to the specific guidelines offered by Composite Prime.

Example- Coverage calculation for HD deck 10 Sqm

filter_1   4mm clip + 146mm board width = 150mm total width coverage
filter_2   1000mm(1m) / 150mm = 6.66 boards
filter_3   10 sqm x 6.66 boards = 66.6 linear metres
filter_4   66.6 linear metres x 3.6m board length= 18.5 boards(round up to 19 boards)
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