Spray insulation can help to solve the problem of keeping insects out of produce that is stored for lengthy periods of time after harvest. This has been a concern to producers and grain handlers since the very beginning of agriculture.
With the development of insecticides and other fumigation methods, pest control has been considerably simplified, however, in the highly competitive arena of world markets, every additional cost is an impediment to competitive trade and the residual effects of insecticide treatment have come under close environmental scrutiny.
One way of minimizing the amount of insecticide required for adequate protection is to provide a gas tight sealed storage with spray insulation foam. This permits minimal treatment during in-loading, sufficient to eradicate any existing pests and prevents re-infestation before the storage is out-loaded.
In the early 1980's trials where undertaken for sealing horizontal grain storages with excellent results, the storages were sealed and also it was cost effective as it led to a reduction in handling costs and a market advantage.
The best and most efficient way to ensure that no gas escapes from the silos is to foam all gaps and penetrations and then over coat with a membrane. This system has proven to be very effective helping to ensure Australia has one of the best quality grains in the world. The spray insulation foam is applied to cavities, ridge capping, wall to roof joints and gable ends ensuring that all gaps and voids are sealed.
This sealing process is a highly specialized function that requires well-trained and experienced applicators and tradesmen to ensure all work is completed in accordance with the client's specifications and at the same time, in the most economical manner possible.
To remain in the forefront of the world markets with grain Co-operative Bulk Handlings (CBH) in Western Australia, Graincorp in New South Wales and Ausbulk in South Australia continue to use the process of sealing silos effectively and economically.