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Decking Calculators

Work out how many decking boards you need using our fantastic range of decking calculators. We’ve created calculators for a number of high-quality decking brands, to offer our customers the perfect combination of choice and convenience. All you’ll need to enter is the dimensions of the area you’d like to deck, and our calculators will do the rest. There’s no easier way to get your project underway ASAP

Composite Prime XS Composite Prime XS
Guarantee 10 Years
Delivery Time 3 - 5 Days
Board Length 3600mm
Reversible No
Price Per Board £34.28 Calculate
Composite Prime Composite Prime Dual
Guarantee 25 Years
Delivery Time 3 - 5 Days
Board Length 3600mm
Reversible Yes
Price Per Board £48.47 Calculate
Frequently Asked Questions

How Do I Use These Calculators?

To use one of our decking calculators, you just need to know the size and shape of your future decking area. As long as it’s a simple square or rectangle, you just need to enter its length and width. Then, our calculator will tell you how many decking boards, fixings, and accessories you’ll need to cover your decking area. If your deck design is more complex, we’d recommend breaking it into different square/rectangular areas and calculating separately. Once you’re happy with the result, you can then add the materials to your basket ready to check out

NB: Our decking calculators cannot determine how many optional extras such as step boards and angle trims you will need. Therefore, you’ll need to add these to your kit yourself after calculating.

Can I Choose What Colour I Want?

Yes, on the final calculator screen (“Results”), you’ll be able to choose between a selection of colours and finishes for your decking boards.

Can Someone Else Use the Calculator for Me?

If you don’t feel comfortable using our calculators, get in touch with our award- winning customer service team. As long as you know the size of your future deck, they’ll be able to do the calculations for you. Simply call them on 01295 565 565, email sales@roofingmegastore.co.uk, or use our handy live chat to get in touch.