How Smart, Scalable Sensors Are Reducing Waste in the Built Environment

At Closed Loop Partners, we invest in companies that are not only solving urgent environmental challenges but also building resilience into the systems we rely on every day. Our investment in LAIIER—a Denver-based startup pioneering printed sensor technology for leak detection—is a reflection of this mission. LAIIER is tackling a critical and costly issue: liquid leaks in commercial and industrial buildings and infrastructure. By detecting water and other liquid leaks, they are enabling a future where our built environment is smarter, more sustainable, and more resilient to climate-related risks.

The Problem: Hidden Leaks, Escalating Risks

Leaks in buildings and infrastructure like wind turbines are a silent threat. They cause billions in damage annually, disrupt operations and contribute to the waste of finite water resources. In data centers, commercial real estate and industrial facilities, even minor leaks can lead to catastrophic failures. Traditional detection methods are slow and reactive, with average response times exceeding 80 hours. This delay not only drives up insurance claims and repair costs but also increases vulnerability to infrastructure stress, reducing the life of critical assets. The more rapidly these assets must be sunset, the more we need to rely on new materials to replace them––an increasing risk as global supply chains increase in volatility and material availability is less consistent.

LAIIER’s technology offers a proactive defense—detecting leaks before they become disasters and enabling buildings to respond faster and smarter.

The Solution: Smart Sensors for a Resilient, Less Wasteful Future

LAIIER’s innovation lies in its Severn WLD™ system—a printed, adhesive sensor that can detect as little as two drops of liquid. These ultra-thin, flexible sensors can be installed in hard-to-reach areas and integrated directly into building materials, including roofing systems. This is especially critical for data centers and other high-value infrastructure, where downtime from water damage can cost millions.

The sensors are paired with LAIIER Cloud™, a real-time monitoring platform that provides analytics, remote configuration and alerts. This combination enables rapid response to leaks, reducing the risk of structural damage, mold and system failures. It also supports long-term resilience planning by generating data that can inform predictive maintenance and infrastructure upgrades.

LAIIER’s impact extends beyond resilience. Their technology is a powerful enabler of the circular economy. By catching leaks early, LAIIER prevents damage to walls, floors and ceilings––materials that would otherwise end up in landfills. This approach reduces both water and material waste, all while helping customers lower their insurance premiums and utility costs––creating a compelling value proposition that’s both environmental and economic.

The Applications: Where Smart Sensors Are Most Needed Today

One of the most exciting applications of LAIIER’s technology is in integrated roofing systems. Through a strategic partnership with Carlisle Construction Materials––who also participated in this funding round––LAIIER is embedding sensors into roofing membranes. This creates “smart roofs” that can detect and localize leaks in real time, providing a critical layer of protection for buildings vulnerable to heavy rainfall.

Data centers also benefit significantly from partnerships with LAIIER. As we build more, faster to meet our growing demand for AI, increasingly hyperscalers are relying on water-based cooling technologies. This means leaks can come from the inside just as easily as from outside sources––and when water intrusion compromises sensitive equipment, it can lead to cascading failures.

Why Now?

Rising insurance costs, stricter building codes and increasing costs from damaged equipment and downtime are driving demand for proactive leak detection. LAIIER’s technology addresses all of these challenges––helping customers reduce risk, save resources and build smarter, more adaptive infrastructure.

We invested in LAIIER because we believe in their mission, their team and their technology. Co-Founders Matt Johnson and Bibi Nelson bring over a decade of experience in printed electronics and have built a culture of thoughtful, impact-driven innovation. With a differentiated product, a growing customer base and strong strategic partners in insurance, roofing and elsewhere, LAIIER is poised to become a category-defining company in smart infrastructure. We’re proud to support them as they help build a more resilient, circular and sustainable future.

Learn more about LAIIER here.

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