Developed to improve storage conditions, the building process of Dome technology is based on integrating waterproofing and insulation, guaranteed by a PVC membrane combined with the application of a polyurethane foam. The waterproofing of the dome is guaranteed by a PVC membrane that will create the initial forming and the exterior coating. Thermic insulation is guaranteed by the application of a layer of polyurethane foam on the entire inner surface of the dome.
Storage should not affect the original quality of the product being stored. Storage cannot improve the qualities of agricultural products, it can only maintain or deteriorate product quality. When the initial quality is good, it should also be good after a period of storage. Moisture is the worst enemy of many stored products.
The technology used for building storage is very important, as vapor drive exists. Concrete is not a vapor barrier and damaged seals in steel silo let the moisture or vapor pass. In such cases one can observe corn caking inside along the overlap of metal sheets, with colored kernels showing the penetration of moisture.
When product is stored in one of Commonwealth’s domes humidity is kept at the original level as there is no water or moisture penetration.
Two waterproofing barriers are installed:
Domes are the ideal solution for the storage of bulk materials that are sensitive to temperature and humidity. The application of 5 cm +/- 0,5 cm of Vethane foam on the inner surface of the airform gives the dome the quality of being equivalent to a controlled atmosphere chamber. Our Vethane foam which is specially formulated to increase adhesiveness on the PVC membrane has a density of 55 kg/m3 and a lambda specification of 0,030 Watt after aging.