The first step in the silo sealing and waterproofing process, like all applications of polyurea coatings, is to prepare the silo’s surfaces for a high-quality installation. This means cleaning and modifying the substrate so it’s free from obstructing debris and possesses the right mechanical profile for strong adhesion. Most silos are made from metal or concrete, which each have their own distinct surface preparation procedures, but in either case, surface preparation will begin with the removal of preexisting coatings if they are observed to have signs of damage or decay. Coating removal is typically achieved using a combination of high-pressure washing and mechanical abrading, and in some rare cases, other techniques must also be employed to ensure the surface is free and clear. Once the surface is prepared, the next step is to prime the substrate, which is a process that is all but identical to the main coating layers, except the spray-on coating is a specialized primer designed to adhere the system more strongly to the silo. Subsequently two separate layers of polyurea are then applied, and if there’s a need for better grip or traction, aggregate materials can be incorporated before the coatings have finished curing. The final result is a single system working together to absorb multi-source chemical and mechanical stress and keep silos dry as a bone and unburdened by the world of insects.