Cooling Construction Workers with Human-Centric Tech, with Tiffany Yeh, MD Co-Founder & CEO of Eztia Materials

The Tangent PropTech episode spotlights a pressing but often invisible challenge: heat stress on construction sites. With climate‑driven temperature spikes affecting 80% of the global population, the industry faces $20 billion in lost productivity and half‑a‑million annual deaths. Host Edward Cohen and guests frame this issue as a labor‑economics problem, noting that extreme heat reduces worker comfort, safety, and ultimately project timelines. By linking the problem to broader proptech themes—human‑centric design, climate resilience, and productivity‑driven innovation—the conversation sets the stage for a technology that could reshape on‑site work conditions.

Enter Estia Materials’ flagship HydroVolt system, a proprietary hydrogel printed onto textiles that pulls heat from the body into a dry‑to‑touch, water‑rich matrix. The gel’s cooling effect diminishes as it dries, but a simple laundry cycle restores performance, making the garments as maintainable as ordinary workwear. The company treats the fabrication process like semiconductor lithography: precise material composition and exact patterning are critical to consistency. Currently sold B2B to construction firms and public‑safety agencies, Estia plans to expand into consumer apparel, leveraging the same cooling chemistry that has been used in building insulation and vaccine packaging.

From a business perspective, the technology promises measurable ROI: lower heart rates, reduced skin temperature, and fewer heat‑related breaks translate into faster project completion, higher worker retention, and lower insurance costs. As labor shortages tighten and climate regulations tighten, developers and contractors are likely to prioritize human‑centric solutions that protect their most valuable asset—the workforce. Estia’s approach illustrates how proptech can move beyond sensors and software to tangible, wearable interventions, positioning cooling textiles as a new frontier in sustainable construction and occupational health.