Summary In this episode, Seth interviews Robert Higgins, a flooring concrete consultant specialist, about the issue of moisture in old concrete. Robert explains that moisture in older concrete is caused by a condition called ionic dew point, where particles migrate to the surface due to diffusion, not moisture migration. He emphasizes the importance of addressing older concrete differently and recommends grinding off the surface to remove accumulated salts. Robert also discusses the acclimation of adhesive and flooring products to prevent moisture accumulation. He highlights the need for proper testing and understanding of environmental conditions to avoid moisture issues. Takeaways Moisture in older concrete is caused by ionic dew point, where particles migrate to the surface due to diffusion, not moisture migration. Grinding off the surface of older concrete can remove accumulated salts and prevent moisture issues. Adhesive and flooring products should be acclimated to the same temperature as the concrete to avoid moisture accumulation. Proper testing and understanding of environmental conditions are crucial to prevent moisture issues in flooring installations. Chapters 00:00 Introduction 02:28 Issue with Old Concrete and Moisture 13:59 Moisture Accumulation and Adhesive Acclimation 20:34 Addressing Moisture in Operating Warehouses 26:00 Permanent Solutions and Avoiding Blame 29:33 Cement Grinding Aids and Chemical Migration 32:40 Conclusion *** Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry. Donate here: https://www.concretelogicpodcast.com/support/ *** Episode References Guest: Robert Higgins | RC Consulting | rcconsulting.higgins@gmail.com Guest Website: linkedin.com/in/robert-higgins-b8294411 Producers: Jodi Tandett, Jace Stocker Donate & Become a Producer: https://www.concretelogicpodcast.com/support/ Music: Mike Dunton | https://www.mikeduntonmusic.com | mikeduntonmusic@gmail.com | Instagram @Mike_Dunton Host: Seth Tandett, seth@concretelogicpodcast.com Host LinkedIn: https://www.linkedin.com/in/seth-tandett/ Website: https://www.concretelogicpodcast.com/ LinkedIn: https://www.linkedin.com/company/concrete-logic-podcast