A silo is a structure that stores bulk materials such as grains or green fodder called silage. In farming communities, grain and silage silos dot landscapes. Silos are also used to hold other kinds of bulk materials and can be found in various settings. Several styles are available including the traditional tower made from wood, metal, brick, or concrete. Property owners want to better protect their silos from weather elements should consider applying a roof coating to their silo structures.
The Coating Process Defined
Items are typically stored in a silo to protect them from snow, wind, rain, and other weather conditions. In the case of crops, silos keep the contents fresh. A roof coating protects the inside of a silo from moisture and other substances that could ruin the contents. If the coating is worn, crops or other items stored in the silo could be ruined, creating a huge financial loss for the farmer or property owner. The investment in the coating process itself is recovered due to the lack of damage done to the crops under the protection of the silo.
Application process varies by the type of coating selected. Some coatings are applied at a factory under environmentally-controlled conditions and thermally cured or air-dried. Others are applied on-site after purchase. Though this may make the coating process more difficult, an experienced professional will apply the coating in an even layer and cover all exposed areas.
Why Coat the Interior of a Silo?
Silo lifetime is determined by resistance to chemicals, abrasion, and corrosion, the worst of the three issues. Corrosion not only threatens the integrity of the silo, it also increases potential contamination of stored dry bulk products. It can be created by chemicals, abrasion, and other factors. Different types of coating materials are available to resist corrosion and chemicals while protecting against abrasion.
Epoxy, high-heat, cold weather, high-acidity, and glass-fused-to-steel are some of the coatings available. These are slick, promoting the flow elements out of the silo, resulting in minimal residue. Epoxy is the most technologically advanced material used to coat a silo. It is typically applied electrostatically or as a liquid or powder.
Once an epoxy silo roof coating is applied, it will bend without breaking or tearing. For bulk storage of dry items, a new thermosetting-modified epoxy powder is available. This meets FDA food contact requirements and is both an exterior primer and interior liner. When considering this and other coatings for the interior of silos, consumers should seek advice from a professional roofer if they have little or no experience in this type of home improvements project.