The fabric covering your grain bunker is only as good as the yarn it’s built from. Yarn type, construction and treatment determine strength, durability and resistance to the elements. Understanding what sits beneath the coating is the first step to specifying a cover that performs across every season.

The grain bunker would not have become Australia’s dominant storage system without solving one problem first: keeping the ground out. This article traces the evolution of ground sheeting, from unwieldy rolls of narrow builder’s film to the prefabricated woven fabrics that changed everything.

A record-area crop is in the ground across Western Australia, but a drier spring outlook and sub-optimal subsoil moisture mean final tonnage is genuinely uncertain. Here is what the numbers mean for storage and cover planning right now.

A cover quote will tell you the fabric weight, the tensile figures and the tear figures. It will almost never tell you how well the coating is stuck to the cloth underneath. If coating adhesion fails, it cannot be repaired and failure affects not only a whole cover, but a whole batch of material. The covers must be replaced, but at this point it’s often too late for the grain underneath. Working with a fabricator who has the technical knowledge to procure a quality material, has long-standing relationships with reputable suppliers and whose material has been tested in the field, is essential.

Domestic fabrication gives grain handlers real advantages in lead time and flexibility. But the base fabric behind every cover is a globally traded commodity, priced in US dollars and moved on container freight. Here is what that means for procurement timing, and what being caught short costs.

BOM’s latest outlook shapes what handlers should be planning for this harvest. Resin and freight markets are moving too, here is what the numbers mean for storage cover budgets this season.