In a sprawling industrial park west of Houston, a seven-year-old company is betting that a microscopic ceramic particle can help solve two of the built environment's most pressing challenges: runaway energy bills and wildfire destruction.
NanoTech Materials recently closed a $29.4 million Series A round led by HPI Real Estate & Investments, the Texas-based startup announced, bringing its total raise to $34.4 million since launching in 2019. The fresh capital arrives as building owners face mounting pressure to slash energy consumption and protect infrastructure against wildfire risks—two trends that have thrust once-obscure materials science into the venture capital spotlight.
The round included participation from Goose Capital, a Houston early-stage firm focused on deep tech, and Milliken & Company, the century-old textiles and materials conglomerate. As part of the deal, Todd Overbergen and D. Kent Lance, a founding partner at HPI, joined NanoTech's board.
What the company is selling, essentially, is a suite of coatings infused with what it calls an Insulative Ceramic Particle—engineered for extremely low thermal conductivity. The idea: spray or roll it onto roofs, industrial equipment, or wooden infrastructure, and watch heat transfer plummet.
It's a pitch that has found traction in some unexpected corners. TIME magazine recognized the technology on its 2024 Best Inventions list, citing deployments at SpaceX launch facilities and along California highways during the Park Fire, one of the state's most destructive blazes that year. The California Department of Transportation has deployed NanoTech's coatings on open-air wooden structures along fire-prone corridors.
The company's flagship product, Cool Roof Coat, is an acrylic system that NanoTech says can cut HVAC cooling loads by up to 50% in some installations. It carries an impressive stack of certifications—International Code Council, California's Title 24, Cool Roof Rating Council, Miami-Dade County—and comes with warranties stretching from 10 to 20 years, depending on the formulation. Whether those energy savings hold up across varied climates and building types remains to be seen at scale, though early adopters appear willing to take the bet.
Then there's Wildfire Shield, launched early last year. This one's designed for exposed wooden infrastructure and claims to withstand temperatures up to 1,800°C—roughly 3,272°F, or hot enough to melt aluminum. Caltrans has deployed it on highway projects, a notable validation for a young company trying to break into the notoriously risk-averse world of government contracting.
The third product, Insulative Coat: Cool Touch, targets industrial surfaces where maintaining compliant temperatures matters—think factories, refineries, or any facility where a scalding pipe is both a liability and an OSHA headache.
NanoTech operates out of a 43,000-square-foot facility in Katy, Texas, and now faces the thorny task of scaling production to meet demand across three distinct markets, each with its own certification maze and distribution quirks. Roof coatings move through commercial contractors. Wildfire protection requires navigating state procurement cycles. Industrial applications demand on-site technical support.
The broader opportunity is undeniable, if daunting. Buildings account for roughly 28% of U.S. delivered energy consumption, according to the Energy Information Administration, with heating and cooling representing the largest slice. Meanwhile, Western wildfires have racked up tens of billions in damage over recent years, turning infrastructure hardening into a top priority for state agencies scrambling to protect roads, bridges, and utility poles.
Whether a ceramic particle—however cleverly engineered—can carve out meaningful market share in categories dominated by legacy players like PPG and Sherwin-Williams is the multi-million-dollar question HPI and its co-investors are now backing. NanoTech has the certifications, some marquee deployments, and a growing pile of capital. What it needs next is proof that the technology can move from pilot projects to ubiquity—and that the economics pencil out when applied at scale across thousands of rooftops and miles of highway guardrails.
For now, the company is focused on ramping up manufacturing capacity and pushing deeper into commercial channels. The wildfires aren't slowing down, and neither are the electricity bills.
