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Biosecurity is the act of preventing microorganisms from reaching animals and humans through surfaces, food, water, air, and soil. Zirconia has revolutionized structural biosecurity with ceramic surface technologies that make infrastructure Biologically Impervious to all microorganisms.
Structural biosecurity refers to the building, engineering, and design controls that prevent the spread of microorganisms through the built environment. It covers viruses, bacteria, fungi, and more, all of which can be transmitted through surfaces before ever reaching food, water, animals, or humans.
Every building material used today, whether concrete, steel, stainless steel, wood, or PVC, provides microbes with the three things they need to survive: habitat, moisture, and nutrients. These materials are either grossly porous, like wood and concrete, or microporous, like stainless steel and PVC. In every case, the surface traps food and moisture in ready-made microbial habitat.
Zirconia's ceramic surface treatment removes all three of those survival conditions by eliminating the habitat itself.
The science of microbe survival
Like humans and animals, microorganisms need habitat, moisture, and food to survive and grow. They also require specific ranges of pH, temperature, and oxygen. Eliminate any one of the three main conditions, and microbial survival and growth stop.
In infrastructure building materials, the supply of food and moisture to microbes is inextricably linked through the habitat in the building material itself. Gross porosity in concrete and wood, or micro-porosity in stainless steel and PVC, each provide all three conditions simultaneously. Treating the surface to permanently eliminate porosity removes habitat, moisture retention, and the nutrient supply in a single step.
Until now, the best available materials for microbe-sensitive environments have been stainless steel and PVC. Both were chosen because they are harder to clean than concrete or wood, and both meet governmental standards for non-porosity in food manufacturing. The problem is that "non-porous" by government definition is not the same as truly non-porous at the microbial scale. Both stainless steel and PVC contain micro-pores large enough for bacteria and fungi to colonize.
For concrete specifically, epoxy and urethane coatings exist to reduce degradation. But they can only form a physical bond with the textured concrete surface. They fail by peeling, cracking, and allowing moisture to seep in from beneath. Once that happens, the space between the coating and the concrete becomes a protected microbial habitat that cleaning protocols cannot reach.
The inevitable result of all these design limitations is a reliance on harsh chemical disinfectants and expensive, time-intensive cleaning regimens to keep microbial contamination under control. Zirconia eliminates the need at the source.
The Zirconia standard
Biologically Impervious™ describes surface systems engineered with very specific characteristics that perpetually prevent microbial survival within and on infrastructure surfaces. Contamination on these surfaces cannot destroy building materials or cross-contaminate food, water, animals, or humans.
All Zirconia systems achieve this standard through three combined properties. No single property alone is sufficient. Together they create a surface that provides no habitat, no moisture, and no nutrients, removing every condition microbes need to survive.
Three defining properties
Zirconia's ceramic surface technologies chemically bond with the substrate and fill every gross and microscopic pore down to a single nanometer. The smallest microbe cannot penetrate, and moisture and nutrients needed for microbial survival are blocked at the surface.
With virtually no pores remaining, cross-contamination is limited to the surface only. Contaminants cannot work their way into cracks, fissures, or the pore network, so cleaning is less time-intensive, requires less material, and can eliminate harsh chemical protocols in most industrial settings.
Every Zirconia coating system employs one or more antimicrobial mechanisms that continuously inhibit microbial growth. The action is passive and ongoing, not dependent on repeated chemical application.
Active antimicrobial protection
Every Zirconia coating system employs at least one, often multiple, antimicrobial mechanisms. These act continuously, not as a one-time treatment.
Safe alumina-zirconia-silicate polymers naturally oxidize and destabilize microbial cell membranes, similar to the action of copper, silver, and platinum. This layer also prevents biofilm from forming on the surface.
The photocatalytic surface increases oxidation under UV light but will not break down with prolonged UV exposure, keeping the antimicrobial action stable over the long term.
Antimicrobial additives mixed into the coatings in liquid form survive the curing process, providing continuous disinfectant action throughout the life of the coating.
Biologically Impervious™ means the surface has been engineered so that microbes cannot survive on or within it. It is not a claim about killing microbes after contact. It is about removing the three conditions, habitat, moisture, and nutrients, that allow any microbe to establish itself in the first place. Combined with the active antimicrobial layer, the surface becomes perpetually hostile to microbial growth without continuous chemical intervention.
Both materials meet governmental standards for non-porosity, but those standards were set before the scale of microbial contamination was fully understood. Both stainless steel and PVC have micro-pores that are large enough for bacteria and fungi to colonize and shelter in. Zirconia's ceramic bond fills pores down to the single nanometer, which is smaller than any known microorganism. That is the meaningful threshold.
CeramycGuard™ is the foundation ceramic surface treatment for concrete, forming a chemically bonded geopolymer composite that eliminates surface porosity. For floor finishes in food processing and commercial kitchen environments, Fortress XD™ combines ceramic surface technology with urethane sealants to create an ultra-smooth, cleanable surface. Other Zirconia systems can be specified for particular biosecurity requirements. Contact our technical team for a project-specific recommendation.
Talk to Zirconia's technical team about specifying a Biologically Impervious surface system for your food processing facility, commercial kitchen, healthcare space, or any other biosecurity-sensitive environment.