Decking Calculator UK: Plan Your Luxury Decking Step-by-Step

Are you looking to transform your garden with a high-end hardwood deck but want to avoid the headache of complex measurements? We’ve got you covered. With the Hardwood Discount Decking Calculator, you can plan your entire project in less than 2 minutes. From the exact number of joists to the precise amount of premium Ipé hardwood: we handle the maths so you can focus on the build.

Does your garden have an irregular shape or tricky levels? No problem at all. Sketch your project on paper, take a photo, and message us on WhatsApp. Our expert team will provide a bespoke calculation for you!

Calculate your decking here

6 Simple Steps to a Flawless Material List

Our professional calculation tool is designed by timber experts. Follow these steps to ensure you have exactly what you need—no more mid-project trips to the timber yard or wasted budget on excess screws.

Step 1: Define Your Decking Dimensions

Enter the length and width of your desired area in metres. Whether it’s a compact balcony or a sprawling garden terrace, our tool instantly calculates the total surface area (m²) required.

Step 2: Choose Your Laying Direction

Decide if you want to lay the boards lengthwise or widthwise.

Pro-Tip: The direction you choose dictates the number of sub-beams (joists) needed. A smart choice here can significantly reduce your foundation costs and minimise timber waste!

Step 3: Select Your Premium Hardwood

Will you choose the "King of Hardwoods", Ipé 21 x 145mm, or another high-durability timber from our range? The calculator automatically factors in the board width and the essential expansion gaps for vital ventilation.

Step 4: The Sub-Structure (Joists & Posts)

A deck is only as good as its foundation. With one click, add the correct amount of hardwood joists, foundation posts, and weed membrane. We calculate the ideal span (max. 40-45cm) for a rock-solid, "bounce-free" result.

Step 5: Fastenings & Finishing Edges

Forget counting individual boxes of screws. Our tool knows exactly how many free hidden fastening clips or stainless steel screws are required for your specific area. You can also add sleek edge trims to lock your timber firmly and neatly in place.

Step 6: Protection & Warranty (The Finishing Touch)

Don't forget your hardwood oil! Our calculator specifies exactly how many litres of premium oil you need to protect your Ipé and validate your product warranty.

Why British Homeowners Choose Our Calculator

Automatic 10% Waste Margin: We automatically include a 10% margin for cutting waste. This ensures you have enough timber for 'self-selection' (choosing the best grain) and covers any minor sawing mistakes.
Instant Price Quotes: See the total cost of your project immediately in GBP. No hidden fees or surprises at checkout.
Precision Engineering: Every accessory, from clips to oil, is perfectly matched to your chosen timber species.

Flexible Collection & Fast Delivery.
Whether you prefer to pick up your goods directly from our UK Hartlepool warehouse or opt for direct home delivery, we ensure a seamless process from order to installation.

Visit us today and start your dream project!
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