Silage Net & Wrap Calculator
Calculate how many metres and rolls of netwrap and silage stretch film you need — with wastage buffer and cost estimate
Bale Size
Standard UK sizes — tap to select:
4ft = 1.22 m · 5ft = 1.52 m
4ft = 1.22 m · 5ft = 1.52 m
Number of Bales
Enter your estimated total bale count for the season
Netwrap Settings
Most balers default to 2.5. Check your baler manual.
Silage Wrap Settings
50% is standard
Net vs Wrap — What's the Difference?
Netwrap is applied inside the baler as the bale forms. It holds the bale in its round shape and allows it to be ejected and handled safely. Without netwrap, the bale would fall apart as soon as it left the baler.
Silage stretch wrap (bale wrap) is a separate stretch film applied after baling by an inline or trailed wrapper machine. It creates the airtight anaerobic seal required for fermentation — without it, air penetrates the bale and the silage will heat, mould and lose dry matter rapidly.
Most silage bales need both — netwrap to hold shape, stretch wrap to preserve. Some crops such as dry haylage may only need netwrap if they are to be fed promptly or stored dry. The number of wrap layers directly affects fermentation quality — 6 layers is the industry standard recommendation for most UK conditions.
How Many Layers of Silage Wrap Do I Need?
4
4 Layers
Acceptable for dry, short-term storage in good conditions. Not recommended for high-moisture grass. Carries a higher risk of fermentation failure if any part of the seal is damaged.
6
6 Layers — Recommended
Industry standard recommendation (AHDB, RABDF). Good balance of cost and preservation for most UK silage-making conditions. Suitable for typical grass silage, haylage and wholecrop.
8
8 Layers
High-moisture crops, clover-heavy swards, long storage periods, or any crop where fermentation risk is high. Halving from 6 to 3 layers saves only ~15% on wrap cost but significantly increases DM losses.
Quick Tips for Reducing Wrap and Net Waste
- 1Maintain consistent bale density — loose bales use more net and are harder to wrap effectively.
- 2Check wrapper overlap settings — incorrect overlap wastes film without improving fermentation protection.
- 3Inspect and replace worn baler knife and net feeding system regularly — damage causes wasted film and poor net application.
- 4Store unused rolls in a cool, dark place — UV degradation reduces stretch film elasticity and can lead to seal failures.
- 5Use repair tape immediately on any puncture — small holes become large tears during storage and handling.