In this episode, Brent Lane, Rob Romano, and returning guest Phil Greggs dive deep into the evolving world of white cement, with a special focus on the implications of increased limestone content. The trio breaks down what this shift means for pool plasterers and why the NPC’s research on Portland Limestone Cement (PLC) is critical for the industry.

What We Talked About:

• Honoring the legacy and contributions of Joe Diedrich from Federal White Cement.
• The push toward sustainability and reduced carbon emissions in the cement industry.
• What “One L Cement” is and why it’s becoming the new standard.
• Surprising results from NPC’s first round of cement testing.
• The science behind limestone additions and how they affect water demand and strength.
• The importance of conducting lab-controlled tests before field trials.
• What comes next in Phase 2 of NPC’s cement research.
• Global supply chain influences and regulatory pressure shaping white cement production.

🔬 Key Takeaways:

• The white cement used in pool plastering is changing, and NPC is on the forefront of testing and understanding how those changes affect performance.
• More limestone = more water needed = potential impacts on strength, color, and application.
• NPC’s research is unbiased, lab-based, and supplier-inclusive—designed to help the whole industry adapt with confidence.
• NPC is planning expanded testing, including up to 35% limestone content and future field applications.

📌 Dedicated To: Joe Diedrich – an integral member of the research committee, respected technical mind, and a kind-hearted contributor to the plastering community. Joe’s commitment and insight continue to guide NPC’s work.

🛠️ Resources & Links:🔗 Learn more about NPC research: https://www.nationalplastererscouncil.com 📱 Download the NPC PRO App for tools and updates: → iOS: NPC Pro – Apple Store → Android: NPC Pro – Google Play 📸 Enter the #FlexYourFinish contest: Follow us on Instagram @thenpc_