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Shade Net Requirement Calculator

Work out shade net requirement instantly with clear inputs, formula shown and shareable results.

About Shade Net Requirement Calculator

Shade net covers the roof plus all four sides, and a 7% allowance is added for overlaps at seams and for fixing margins at the ends. Dividing the total area by the roll width gives the running metres to order, since net is sold by length in a fixed width.

Formulas

Net area

Area = length x width + 2 x (length + width) x side height, plus 7% for overlap and fixing

Roll length

Roll length = total area / roll width

Worked example

With the default values below, Shade Net Requirement Calculator returns Shade Net Required of 963.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Structure Lengthminimum 0.1 m
30 m
Structure Widthminimum 0.1 m
20 m
Side Height To Coverminimum 0 m
3 m
Net Roll Widthminimum 0.1 m
3 m

Results

Shade Net Required
963.00
Roof Area
600.00
Side Area
300.00
Roll Length To Buy
321.00

Step by step

  1. 1Values used
  2. 2Net area
  3. 3Roll length
  4. 4Shade Net Required= 963.00
  5. 5Roof Area= 600.00
  6. 6Side Area= 300.00
  7. 7Roll Length To Buy= 321.00

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

What shade percentage should I choose?

35-50% for most vegetables and nursery work, 50-75% for shade-loving ornamentals and ginger, and 75%+ only for propagation. Too much shade causes weak, leggy growth.

Does colour matter?

Green and black nets mainly cut light intensity. White and pearl nets scatter light more and keep the canopy cooler for the same shade factor, which suits high-radiation regions.

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