• Can You Coat Fiberglass?

  • Jan 2 2025
  • Length: 29 mins
  • Podcast

Can You Coat Fiberglass?

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  • Summary

  • In this episode of the HVAC School Podcast, Bryan interviews Zach about duct coatings and their applications in HVAC systems, particularly focusing on the Hardcast RE500 product. The discussion delves into the importance of proper duct coating applications and their benefits for both contractors and customers. Zach, who has extensive experience in duct cleaning and restoration, shares his expertise on the proper application and benefits of duct coating systems. The conversation explores how modern ductboard comes with a clear coat that offers some protection, but additional coating can provide significant benefits, especially in high-velocity areas near equipment. They discuss how coating creates a smoother, more cleanable surface that's almost comparable to sheet metal in terms of friction resistance. Zach emphasizes that coating should only be applied after proper cleaning, as it's not meant to cover up dirty ducts but rather to protect and improve cleaned surfaces. A significant portion of the discussion centers around the practical applications for HVAC contractors, particularly during equipment changeouts. Bryan proposes the idea of coating the first 5-10 feet of ductwork near equipment during changeouts, as these areas experience the highest velocity and are most susceptible to fiber shedding and moisture issues. The conversation also addresses the cost-effectiveness of coating versus replacement, with the coating being approximately one-fourth to one-fifth the cost of replacement. Key Topics Covered: Hardcast RE500 duct coating product and its applicationsBenefits of duct coating, including reduced friction, fiber containment, and improved cleanabilityThe importance of proper surface preparation before coating applicationComparison between coated ductboard and sheet metal surfacesDrying and curing times for duct coatingsThe relationship between duct cleaning and coating servicesCost comparison between coating and replacementSpecial considerations for coastal environmentsNADCA certification and training requirementsThe importance of proper application techniques and professional certificationHealth and safety considerations regarding fiberglass ductworkThe role of duct coating in preventative maintenanceApplication methods, including airless sprayer and brush/bucket techniquesQuality control and industry standards for duct coating Learn more about NADCA at https://nadca.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android
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