Temporary Grain Storage Solutions for Bumper Crop Years

Every Alberta grain producer has faced the same problem at least once: the crop comes off bigger than expected and there is nowhere to put it. Bins are full, elevators have long wait times, and grain left in piles or poorly covered on the ground loses value fast. Temporary grain storage is not just a convenience — in bumper crop years, it is a financial necessity.

The Cost of Inadequate Storage

Grain stored improperly loses value in multiple ways. Moisture damage from rain or ground contact leads to grading downgrades that can cut the price by 30 to 50 percent. Spoilage from heating in a poorly ventilated pile means total loss. Even grain covered with tarps on the ground faces condensation issues from temperature swings, rodent contamination, and increased drying costs when it finally moves to market.

A crop that grades number one in the combine can grade feed by the time it reaches the elevator if storage conditions are poor. On a 10,000-bushel surplus of canola, the difference between a number one grade and feed grade can exceed $30,000.

Fabric Buildings as Grain Storage

Fabric storage buildings have become a popular solution for temporary and semi-permanent grain storage across the prairies. A building with a proper floor preparation — compacted gravel or concrete — can safely hold bulk grain while maintaining the airflow and moisture protection that preserves grade.

The key advantage over tarps and grain bags is the overhead protection. The steep peaked design with a 29-degree slope and slick 750 g/m² PVC cover ensures precipitation sheds off the building rather than pooling on top of the grain. Meanwhile, the open ends or ventilation panels that are common in fabric building configurations allow the air circulation needed to prevent condensation and heating.

Floor Preparation for Grain

Grain storage places specific demands on the building floor. Moisture migration from the ground up into the grain pile is the primary risk. A well-compacted gravel pad with a vapour barrier underneath provides protection against ground moisture. Some producers lay heavy poly sheeting over the gravel before piling grain as an additional safeguard.

The floor should slope slightly toward the building opening to facilitate cleanout with a front-end loader. Even a one- to two-percent grade makes a meaningful difference when you are scraping the last few inches of grain from the floor.

Aeration Considerations

For grain that will be stored more than a few weeks, aeration is strongly recommended. Portable aeration fans can be set up at one end of the building to force air through the pile, controlling moisture and temperature. The fabric building’s natural ventilation complements mechanical aeration by allowing humid exhaust air to escape readily.

Sizing for Grain Volume

Grain storage volume depends on the building’s width, length, and how high the grain is piled. As a rough guide, a 40-foot-wide by 60-foot-long building with grain piled to six feet deep holds approximately 7,500 bushels. Buildings are available in widths from 20 to 70 feet across 18 sizes, so matching the building to your expected surplus is straightforward.

Many producers keep a fabric building specifically as overflow storage that sits empty in average years and earns its keep in bumper years. At a fraction of the cost of permanent bin storage, the investment makes sense even if the building is only fully utilized every three or four years.

Multi-Purpose Flexibility

Unlike a steel bin, a fabric building used for grain storage in fall can serve as equipment shelter, hay storage, or workshop space for the rest of the year. This versatility is one of the strongest arguments for fabric buildings over single-purpose storage infrastructure. One building, multiple uses, year-round value.

Frequently Asked Questions

Can fabric buildings store hay effectively?

Fabric buildings are one of the most cost-effective ways to store hay. The PVC cover keeps rain and snow off your bales while allowing enough air circulation to prevent mould growth. Studies show that covered hay retains 95%+ of its nutritional value compared to outdoor-stored hay that can lose 25–35% to weathering. The ROI on covered storage often pays for the building within 2–3 seasons.

What size building do I need for hay storage?

Sizing depends on bale size and stacking method. For large round bales (5'×5'), you can fit approximately 3 bales per 100 square feet when stacked in rows. A 40'×60' building (2,400 sq ft) stores roughly 70–80 large round bales. For small square bales stacked high, you can store significantly more per square foot. Contact MAX for a sizing consultation based on your specific needs.

How do I prevent moisture in a fabric hay storage building?

Proper moisture management starts with site preparation: ensure your gravel pad has adequate drainage slope (2% minimum) away from the building. Stack bales on pallets or a gravel base — never directly on bare ground. Configure end walls for cross-ventilation to allow moisture to escape. In humid climates, leaving one end partially open provides excellent airflow without compromising weather protection.