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Planning a composite fence can be confusing, especially if you're unsure about post spacing, set combinations or how many panels you need. This calculator removes the guesswork by easily showing you exactly what components are required for your total fence length, height and design, ideal for your next DIY home project.
To help you work out exactly what you will need, we have created a custom Composite Fencing Calculator, designed for fast and accurate project planning.
Our Composite Fencing Calculator makes it easy to calculate the right materials for your fencing run. Simply enter your fence height and total length, choose your preferred style and colour, and the calculator will instantly display the ideal fencing set, including panels, posts, caps, and fixings, all ready to be added straight to your basket.
Whether you’re building a garden boundary, adding a modern privacy screen, or replacing an old timber fence, this tool ensures you order the correct components for a strong, long-lasting and professional-looking composite fence.
Our Composite Fencing calculator and builder will provide a customised quote based on your measurements in just a few seconds.
From there, you can add everything directly to your cart without the guesswork or manual calculations.
If you need extra help choosing the right fencing style, height or post type, please call us on 0203 011 1661 or email info@alphadecking.co.uk. Our team will always be happy to assist you.
Once you’ve used the calculator, you can also order a sample pack to see our composite fencing colours and finishes in person.
Choose your posts, range, colour, trellis and height, enter your fence sides and get an instant price with everything you need.
A quick guide explaining how our Composite Fencing Calculator works.
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Composite fencing, also known as WPC fencing (Wood Plastic Composite), is a modern creative alternative to traditional timber fencing. It’s made from a blend of recycled wood fibres sourced from post industrial pulp and high quality PE (polyethylene) plastics. This combination creates a strong, durable material that replicates the natural beauty of wood while offering superior weather resistance and minimal maintenance. Unlike timber, composite fence boards will not rot, warp, splinter, or require yearly painting or staining, making them a long term, eco friendly choice for modern gardens.
Concrete posts sets - yes, all our sets designed for concrete posts include everything you need to build and complete one full fence panel/bay. This includes all the slats you'll need for your chosen height, any trellis, a top and bottom rail, u-channel inserts for the concrete posts and insert caps for those inserts.
Yes, they sure can! Our composite fence panel slats have a honeycomb structure throughout which allows you to cut them down to any required width without compramising their structural integrity. They can be easily cut to the required size using your usual woodworking tools but we generally recommend using a mitre (chop) saw for ease and precision.
While the initial cost can be higher, homeowners save money long-term thanks to low maintenance – no staining, painting, or panel repairs required. In addition to this, our composite fencing carries a 15 year warranty protection.
Alpha Decking's 15 year warranty protects against warping, cracking, splitting, rotting and fungal decay caused by manufacturing defects, when subject to normal use and proper installation.
You can find more information and the terms of our full warranty here.
You have 3 options. Installation using our composite fence posts or aluminium fence posts installation using our u channel inserts for concrete post. These inserts which easily slot into your new or existing concrete posts allowing you to install our aspen composite fence panel slats or our willow composite fence panel slats. You can choose which option suits your fence installation best when purchasing your composite fence panel sets.
All of our composite fencing seamlessly and easily fits together using a tongue and groove system allowing you to make your fence up to your desire height.
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