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Composite Decking Cost Calculator
Estimate boards, fixings and total cost for a composite deck.
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Estimate boards, fixings and total cost for a composite deck.
Composite Decking Cost Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: Cost = area x (1 + waste) x price + extras.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Composite Quick Guide
Typical values for reference.
| Length m | Width m | Price per m2 | Total |
|---|---|---|---|
| 4 | 3 | 85 | £1,372.00 |
| 5 | 4 | 95 | £2,440.00 |
| 3 | 2.5 | 70 | £701.25 |
| 6 | 4 | 110 | £3,536.00 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Composite Decking Cost Calculator FAQ
Answers to common questions about this calculator.
Boards typically cost from about 50 to 120 pounds per square metre plus fixings.
Around 10 percent for straight layouts.
Yes, a sub-frame is needed and is included under extras.
No, this estimates materials only.