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  • Go Beyond the Lab with ASTM G50

    Go Beyond the Lab with ASTM G50

    Why ASTM G50 Should Be the Gold Standard for Atmospheric Corrosion Testing

    When evaluating how metals and alloys will perform in real-world conditions, choosing the right test method is crucial. While accelerated laboratory tests have their place, the superior method for determining true, long-term atmospheric corrosion resistance is ASTM G50: Standard Practice for Conducting Atmospheric Corrosion Tests on Metals.

    This testing helps product manufacturers, metallurgical companies, and end users understand the wear and corrosion behavior of specified materials.

    What is ASTM G50?

    ASTM G50 is a comprehensive standard that outlines the general procedures and conditions for exposing metal panels and alloys to real-world weather and atmospheric conditions.

    • Objective: To evaluate the corrosion resistance of metals when exposed to the weather and to assess the relative corrosivity of the atmosphere at specific testing locations.
    • Methodology: It involves placing test panels in defined outdoor exposure sites to accumulate data for comparison purposes.
    • Key Consideration: Recognizing the highly variable and complex nature of the atmosphere (weather effects, industrial factors, natural elements), the standard recommends a multi-year exposure period to minimize the influence of short-term variations and provide a reliable assessment.
    • Quality Control: It mandates the use of control specimens—materials with established weathering characteristics—to ensure the test results are meaningful and comparable.

    The Real-World Relevance of ASTM G50

    The most significant advantage of ASTM G50 is its direct correlation to how a material will actually perform in service.

    • True Corrosivity Data: By exposing materials to actual rain, humidity, temperature cycles, UV light, pollution, and natural salt deposits, the test captures the synergistic effect of these variables. This provides data that is inherently more relevant than data from conditions simulated in a controlled environment.
    • Long-Term Performance: The test accounts for seasonal variability and requires multi-year exposure. The results are highly reliable for predicting a material’s long-term durability and lifespan in a specific atmospheric environment.
    • Material Selection and Site Evaluation:
      • It helps determine the most suitable metal or protective coating for products used outdoors (e.g., in construction, automotive, or infrastructure).
      • It can also be used to evaluate and compare the inherent corrosivity of different geographical locations before large-scale projects are built.

    Why ASTM G50 is Superior to ASTM B117 (Salt Spray)

    When the goal is to predict real-world atmospheric performance, ASTM G50 offers a level of fidelity that the commonly used ASTM B117, Standard Practice for Operating Salt Spray (Fog) Apparatus, cannot match.

    While ASTM B117 (often called the salt fog or salt spray test) is a valuable tool for quality control and detecting gross material defects, it is fundamentally an accelerated laboratory test with severe limitations for performance prediction.

    FeatureASTM G50 (Atmospheric Corrosion)ASTM B117 (Salt Spray/Fog)
    Test EnvironmentReal-world weather (rain, sun, temperature cycles, natural contaminants).Controlled, high-humidity fog of 5% neutral salt solution at constant temperature.
    RelevanceHighly correlated with real-world, long-term outdoor performance.Seldom correlated with performance in natural environments when used as stand-alone data.
    Test DurationTypically multi-year (e.g., 1, 3, 5 years).Typically measured in hours or days (e.g., 24, 100, 1000 hours).
    PurposeEvaluates true corrosion resistance and atmospheric corrosivity.Provides relative corrosion resistance information for comparison in a given test chamber.
    LimitationHigh variability if exposure time is too short.Poor predictability for long-term outdoor use without corroborating field data.

    As the ASTM B117 significance section notes, “Prediction of performance in natural environments has seldom been correlated with salt spray results when used as stand-alone data.” Furthermore, correlation should be considered “only in cases where appropriate corroborating long-term atmospheric exposures have been conducted.”

    The ultimate “corroborating long-term atmospheric exposure” is, in essence, an ASTM G50-style test. The salt spray test simply does not replicate the complex, cyclic drying/wetting, UV exposure, and contamination effects that occur naturally. It creates a highly specific, controlled environment, which is why its results often fail to translate to the real-world performance engineers truly need to know.

    Coat Zone and ASTM G50

    Despite completing 6,000 hours of B117 testing, we believe the G50 evaluation provides a stronger case for the efficacy of CoilSafe®, which is why we conducted an ASTM G50-style marine exposure evaluation. This evaluation included 25,000 hours of natural marine exposure on Galveston Island, one of the harshest coastal environments. Third-party reporting showed that CoilSafe® exhibited complete corrosion resistance, whereas the uncoated coil on the same rooftop showed extensive deterioration consistent with chloride-driven corrosion. Learn more about the results of this evaluation here.

    Final Thoughts

    For any material designed to withstand the elements, relying solely on an accelerated lab test such as ASTM B117 is a risk. ASTM G50 provides the necessary rigor and realism by testing materials in their actual operating environment: the open atmosphere. By adhering to its procedures—including using controls and committing to multi-year exposures—companies can gain confidence that their material’s performance data is not only fast but also accurate.

    Sources

  • Reviving Aging Infrastructure Through Retrofits

    Reviving Aging Infrastructure Through Retrofits

    When overseeing vast portfolios of aging infrastructure, a critical challenge looms: the degradation of asset value driven by deteriorating Indoor Air Quality (IAQ) and unsustainable energy costs. While the initial impulse may be to prioritize costly, full-system replacements, the smart, sustainable solution lies in strategic retrofitting, specifically targeting the core failure point: your HVAC system.

    The reality is that legacy buildings must compete with modern, high-performance facilities. When tenants and occupants prioritize health and efficiency, an aging asset with compromised air quality and skyrocketing utility bills quickly becomes a liability. This is particularly true in the post-pandemic era, where IAQ has become a non-negotiable metric of building quality and resilience.

    The Dual Threat for Aging Infrastructure: Corrosion and Contamination

    According to Buildings magazine, older infrastructure presents significant IAQ challenges stemming from its foundational systems. The most critical issue lies within the HVAC coils and internal components. Over time, these systems face a dual threat:

    1. Corrosion and Efficiency Loss: In environments with high humidity or industrial pollutants, evaporator and condenser coils are prone to corrosion and fouling. This degradation weakens the critical bond between the fins and the copper tubing, severely impeding heat transfer. An inefficient coil forces the HVAC system to run longer and harder, wasting energy and accelerating equipment wear.
    2. Microbial Contamination: Damp, aged coil surfaces become ideal breeding grounds for mold, mildew, and bacteria. When the HVAC system is the source of contamination, poor IAQ becomes unavoidable, as it circulates particulate matter and potentially harmful biological agents throughout the occupied space. This directly impacts occupant health and productivity, diminishing the asset’s value.

    For an asset owner, replacing an entire HVAC system is often prohibitively expensive and disruptive. The alternative targeted, high-performance retrofit strategy is essential for achieving modern performance metrics without the massive capital outlay.

    The High-ROI Retrofit: A Solution-Focused Approach for Aging Infrastructure

    Coat Zone’s advanced coatings are engineered to transform existing HVAC units into high-performance, long-life assets. This makes them the cornerstone of an intelligent retrofit strategy for aging infrastructure. Our solutions offer a proven path to simultaneously recover efficiency and dramatically improve IAQ.

    1. IAQ and Efficiency Recovery with CoilSafe Plus®

    To address the internal threats to efficiency and health, we recommend CoilSafe Plus®. This proprietary, ultra-thin, inorganic coating is applied directly to the coils. It then wicks deep into the structure to restore the critical heat transfer bond.

    • Efficiency: By restoring heat transfer, CoilSafe Plus® can help bring systems closer to their original factory efficiency. This often results in measurable reductions in kilowatt-hour usage and lower operating costs—the goal of any successful retrofit.
    • IAQ and Corrosion Defense: As an antimicrobial solution, CoilSafe Plus® creates a glass-like barrier that resists the adhesion of mold, mildew, bacteria, dirt, and debris. This permanent defense fights coil fouling and preserves optimal airflow. It also directly addresses the primary source of biological contaminants within the HVAC system, thereby improving IAQ for aging infrastructure.

    2. Asset Preservation with ThermalBlock™

    For units exposed to the elements, our ThermalBlock™ coating provides the external defense necessary to complete the retrofit. Applied to exterior cabinets and ductwork, this thermal radiant barrier blocks up to 93% of solar heat. By reducing the thermal load on the unit’s exterior, ThermalBlock™ reduces HVAC run-time, significantly extending the unit’s useful life and lowering energy consumption, especially during peak demand periods.

    The combination of internal protection (CoilSafe Plus®) and external thermal defense (ThermalBlock™) delivers an integrated, lasting retrofit solution that costs a fraction of unit replacement while providing a rapid, measurable ROI.

    Secure Your Consultation Today

    Leaders in the infrastructure sector cannot afford to let their aging assets become financial or health liabilities. A strategic HVAC retrofit using advanced coatings is the definitive way to improve IAQ, reduce energy consumption, and extend the lifespan of your critical equipment.

    Don’t wait for the inevitable costly replacement cycle. Engage in a solution-focused conversation about protecting and optimizing your portfolio.

    Schedule a consultation with Coat Zone and one of our approved dealers today to learn how our coatings can secure your asset’s future.

    Sources

    1. Buildings. Breathing New Life into Old Buildings: Addressing Indoor Air Quality Challenges in Aging Infrastructure. [https://www.buildings.com/resiliency-sustainability/health-wellness-iaq/article/55323230/breathing-new-life-into-old-buildings-addressing-indoor-air-quality-challenges-in-aging-infrastructure].

  • Safeguarding Infrastructure: Combatting Mold in Your HVAC Systems

    Safeguarding Infrastructure: Combatting Mold in Your HVAC Systems

    For leaders in the infrastructure sector, the integrity and performance of critical systems are paramount. Among the silent threats that can undermine efficiency, compromise indoor air quality, and even lead to costly downtime is the pervasive issue of mold in HVAC systems. While often overlooked until a problem becomes apparent, understanding what causes mold to proliferate and how to prevent it is crucial for maintaining healthy, efficient, and long-lasting HVAC assets within your commercial and industrial environments.

    Why Mold Thrives in HVAC

    Mold in HVAC systems isn’t just an aesthetic issue; it’s a significant operational and health concern in large-scale facilities. The conditions within commercial HVAC units—particularly on cooling coils and in drain pans—are often ideal for microbial growth. As emphasized by the U.S. Environmental Protection Agency (EPA), mold growth is fundamentally dependent on the presence of moisture [1]. Several factors contribute to this unwelcome phenomenon in commercial settings:

    • Persistent Moisture Accumulation: The primary culprit. Mold spores are ubiquitous and will grow if moisture is present [2]. In commercial HVAC systems, condensation on cooling coils, leaks, and clogged drain pans can lead to persistent dampness, creating the essential conditions for mold proliferation [1, 2].
    • Abundant Organic Matter: Mold requires a food source to grow, and organic materials commonly found in building dust, dirt, and debris that accumulate in HVAC systems serve this purpose [1, 3]. These microscopic particles settle on moist surfaces, providing the necessary nutrients for mold to germinate and colonize.
    • Concealed & Stagnant Conditions: The interior of large-scale HVAC units, air handlers, and extensive ductwork is typically dark and can have areas of stagnant air, which promote mold growth once spores establish themselves [2].
    • Operational Cycling and Temperature Differentials: While large commercial systems operate to maintain precise temperatures, the constant cooling cycles create the necessary temperature differentials for condensation, further contributing to a mold-friendly environment.

    Left unaddressed, mold in the HVAC system can lead to significantly reduced airflow, decreased system efficiency, unpleasant musty odors, and—most critically—the widespread dispersion of mold spores throughout occupied spaces. The Centers for Disease Control and Prevention (CDC) warns that mold exposure can cause a range of health issues, including respiratory problems, asthma exacerbation, allergic reactions, and irritation of the eyes, skin, nose, throat, and lungs [4]. For critical infrastructure, this can translate to operational disruptions, increased energy consumption, compliance challenges, and a compromised working environment.

    Beyond Band-Aids: Proactive Prevention with Specialized Coatings

    Many approaches attempt to address mold in HVAC systems, ranging from reactive cleaning protocols to frequent filter replacements. While these are essential components of a robust maintenance program, they often fall short of providing a true, long-term preventative solution, especially on the intricate surfaces where mold first takes root. The Occupational Safety and Health Administration (OSHA) explicitly states that the most effective way to prevent mold growth is to control moisture and to clean and dry any wet or damp building materials within 24-48 hours [3]. This is where advanced surface protection becomes invaluable.

    Coat Zone understands that preventing mold in HVAC requires addressing the problem at its source: the susceptible surfaces themselves. Our specialized antifungal and antimicrobial coatings are engineered to create an inhospitable environment for mold and other microbial growth, significantly reducing the risk of contamination and deterioration within your commercial HVAC infrastructure.

    How Coat Zone’s CoilSafe Solutions Offer Superior Protection:

    • CoilSafe®: This foundational coating is designed for the interior coils of your HVAC system. It provides a durable, smooth barrier that minimizes the adhesion of airborne organic matter, making coils easier to clean and significantly reducing the potential for microbial buildup [7]. By maintaining clean coils, CoilSafe ensures optimal airflow and heat transfer, thereby preserving system efficiency, which is crucial for large-scale operations.
    • CoilSafe Plus®: Taking protection a step further, CoilSafe Plus® incorporates advanced antimicrobial properties directly into the coating. This active defense inhibits the growth of bacteria, mold, and other microorganisms directly on the coil surfaces [7]. These advanced properties create a microscopic environment on the coil where microorganisms cannot readily thrive or reproduce, effectively preventing biofilm formation and subsequent mold colonization, thereby offering an enduring barrier against mold in HVAC [7].

    By applying these specialized coatings, you are not simply reacting to mold; you are proactively preventing its establishment and growth. This means:

    • Improved Indoor Air Quality: Crucial for employee health and compliance in commercial settings.
    • Enhanced System Efficiency: Optimized heat exchange and reduced energy consumption, directly impacting operational costs.
    • Extended Equipment Lifespan: Protecting sensitive coil surfaces from biological degradation, prolonging asset life.
    • Reduced Maintenance Costs: Less frequent and less intensive coil cleaning is required, resulting in minimized disruption.

    For leaders in the infrastructure sector, investing in preventative measures like Coat Zone’s CoilSafe and CoilSafe Plus is not merely a maintenance expense—it’s a strategic decision that safeguards high-value assets, protects personnel health, and ensures the uninterrupted operation of critical facilities.

    Partnering for Healthier, More Resilient Infrastructure

    At Coat Zone, we are dedicated to providing the highest quality antifungal and antimicrobial coatings for your commercial and industrial HVAC systems. While we own these innovative coating technologies, we partner with a network of approved dealers who are experts in their professional application. This ensures that every installation meets our rigorous standards for effectiveness and durability, providing you with a reliable and long-lasting solution against mold in HVAC.

    Don’t wait for mold to compromise your infrastructure. Take a proactive stance with Coat Zone’s proven solutions.

    Take the Next Step: Schedule a Consultation

    Are you ready to fortify your HVAC systems against the unseen threat of mold and ensure the highest standards of air quality and operational efficiency within your facilities? Contact Coat Zone today to schedule a consultation. Our experts and approved dealers are ready to discuss your specific needs and demonstrate how CoilSafe and CoilSafe Plus can provide the lasting protection your infrastructure deserves.

    Sources:

    1. U.S. Environmental Protection Agency (EPA). “Mold Remediation in Schools and Commercial Buildings.” EPA 402-K-01-001, March 2001. Available at: https://www.epa.gov/mold/mold-remediation-schools-and-commercial-buildings-guide-chapter-1
    2. U.S. Environmental Protection Agency (EPA). “Should You Have the Air Ducts in Your Home Cleaned?” EPA Publication No. 402-K-97-002, October 1997. While focused on homes, the fundamental principles of condensation and moisture accumulation leading to mold in HVAC systems are universally applicable to commercial systems. Available at: https://www.epa.gov/indoor-air-quality-iaq/should-you-have-air-ducts-your-home-cleaned
    3. Occupational Safety and Health Administration (OSHA). “A Brief Guide to Mold in the Workplace.” OSHA Safety and Health Information Bulletin (SHIB 10-10-03), October 2003. Available at: https://www.osha.gov/publications/shib101003
    4. Centers for Disease Control and Prevention (CDC). “About Mold.” CDC, September 2020. Available at: https://www.cdc.gov/mold-health/about/index.html
    5. National Institute for Occupational Safety and Health (NIOSH). “Mold Testing and Remediation.” CDC/NIOSH. Available at: https://www.cdc.gov/niosh/mold/testing-remediation/index.html
    6. U.S. Environmental Protection Agency (EPA). “Mold.” EPA Website. Available at: https://www.epa.gov/mold
  • Modernizing Your Facility’s Legacy: Strategic Tech Integration for a Sustainable Future

    Modernizing Your Facility’s Legacy: Strategic Tech Integration for a Sustainable Future

    The allure of shiny new construction often overshadows the immense potential and pressing need to revitalize existing properties. As the commercial real estate landscape evolves, the strategic retrofit of aging buildings is no longer just an option; it’s a critical pathway to enhanced sustainability, operational efficiency, and long-term value. The challenge, however, lies in seamlessly integrating cutting-edge technology with legacy systems, particularly within the crucial realm of HVAC infrastructure.

    The article “Retrofitting Aging Buildings Requires Strategic Tech Integration” highlights a pivotal truth: successful sustainability retrofits demand a holistic approach that moves beyond simple component replacement. It emphasizes the need for thoughtful planning, informed technology choices, and a thorough understanding of how these integrations affect overall building performance. This approach is particularly relevant when considering the core of any building’s operational efficiency: its HVAC system.

    The Imperative of the Retrofit

    Many existing buildings, while structurally sound, are operating with outdated infrastructure that drains resources. These legacy systems contribute to:

    • Excessive Energy Consumption: Older HVAC units are notoriously inefficient, resulting in higher utility bills and a significant carbon footprint. This inefficiency directly impacts your bottom line and your sustainability targets.
    • Suboptimal Occupant Comfort: Inconsistent temperatures, poor indoor air quality, and unreliable performance can lead to tenant complaints and reduced productivity.
    • Increased Maintenance Costs: Frequent breakdowns and the need for specialized parts for older equipment can quickly become a financial burden.
    • Diminished Asset Value: Buildings that fail to meet modern efficiency and comfort standards struggle to compete in today’s market.

    A well-executed retrofit addresses these challenges head-on. It’s an opportunity to transform an aging asset into a high-performing, sustainable, and attractive property.

    Strategic Tech Integration: Beyond the Box

    The key to a successful retrofit that enhances sustainability lies in strategic tech integration. A successful retrofit isn’t just about installing smart thermostats or advanced building management systems (BMS); it’s also about optimizing the overall energy efficiency of the building. It’s about creating a cohesive, intelligent ecosystem where new technologies seamlessly integrate with existing infrastructure, optimizing every aspect of building operations.

    The article correctly points out that this requires:

    • Early Engagement of Experts: Bringing in tech integrators, HVAC specialists, and sustainability consultants from the outset ensures a comprehensive plan.
    • Data-Driven Decision Making: Leveraging existing building data to identify pain points and prioritize upgrades.
    • Scalability and Future-Proofing: Choosing technologies that can adapt to evolving needs and future innovations.

    Crucially, while advanced controls and AI-driven analytics can optimize the operation of your HVAC system, the fundamental efficiency and longevity of the physical equipment itself are paramount. If your HVAC coils corrode, your ductwork is inefficient, or your outdoor units are suffering from environmental degradation, no amount of smart technology will fully compensate for these issues.

    Maximizing Your Retrofit ROI: The Coat Zone Advantage

    This is where Coat Zone steps in, offering a vital layer of protection and enhanced performance that directly amplifies the benefits of your strategic tech integration. Our specialized HVAC coatings complement your retrofit efforts by addressing the physical integrity and efficiency of your existing and newly installed equipment.

    Consider the impact on your HVAC systems:

    • CoilSafe® and CoilSafe Plus®: Applied to interior coils, these coatings prevent corrosion and microbial growth. Corrosion is a silent killer of HVAC efficiency, impeding heat transfer and airflow. By protecting coils, CoilSafe® and CoilSafe Plus® ensure your units maintain optimal energy efficiency, reducing the workload on your compressors and resulting in substantial energy savings. CoilSafe Plus® also enhances indoor air quality by inhibiting the growth of mold and bacteria.
    • ThermalBlock™: This exterior coating for HVAC units, cabinets, and ductwork provides a highly reflective and durable barrier. It significantly reduces solar heat gain, preventing your equipment from overheating and working harder than necessary. This reduction translates into less stress on the system, lower energy consumption, and extended equipment lifespan.

    By integrating Coat Zone’s protective solutions into your retrofit strategy, you can preserve your capital investment in new technology and also revitalize the existing HVAC infrastructure to perform at its peak. This synergistic approach leads to:

    • Dramatically Improved Energy Efficiency: Lower utility bills and a reduced carbon footprint, contributing significantly to your sustainability goals.
    • Extended Equipment Lifespan: Protecting vital components reduces wear and tear, delaying costly replacements.
    • Enhanced Reliability: Fewer breakdowns and more consistent performance, ensuring occupant comfort and operational continuity.
    • Maximized ROI on Tech Investments: Ensuring your smart building technologies are optimizing truly efficient equipment.

    Invest in a Sustainable Future

    The decision to retrofit an aging building is an investment in its future. By embracing strategic tech integration and fortifying your HVAC infrastructure with proven protection, you are not just upgrading a building; you are transforming it into a resilient, high-performing, and sustainable asset.

    Don’t let inefficient legacy systems undermine your modernization efforts. Schedule a consultation with Coat Zone today. Our experts and certified dealers are ready to discuss how our solutions can help you maximize the benefits of your retrofits and/or existing HVAC equipment, optimize your budget, and pave the way for a more efficient and sustainable tomorrow.

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