Decking Waste Factor Calculator
Decking with waste allowance.
Work It Out And Get Clear Answers
Decking with waste allowance.
Decking Waste Factor Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Press Calculate to see the result.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Decking Waste Factor Quick Guide
Typical values for reference.
| Deck area (sq ft) | Waste (%) | Decking to order |
|---|---|---|
| 300 | 10 | 330 sq ft |
| 150 | 10 | 165 sq ft |
| 600 | 10 | 660 sq ft |
| 300 | 5 | 315 sq ft |
| 300 | 20 | 360 sq ft |
| Rule of thumb: check your inputs, use the result as a guide and round sensibly. | ||
Decking Waste Factor FAQ
Answers to common questions about this calculator.
Use 5% for straight lays and 15% for diagonal layouts.
It uses the default inputs shown and the formula described above. Change any value and press Calculate to see how the result moves.
It is an estimate based on the inputs you enter. Check real quotes, labels, product data or official guidance for important decisions.
Yes. Replace each input with your own figures and press Calculate to update the result.