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About us

An arial view of a rooftop garden

Our vision

Our cities, much like us, possess both our greatest weakness and our greatest strength. Our vision is to identify and convert every viable, unused rooftop across our cities into a green roof.

Our mission

Building technology that enables the evaluation, financing and building of green roofs across our cities and validates results through data and analytics. Our tools are designed to enable cities to adapt and grow more safe, resilient and liveable.

Our team

Christine Tibali

Christine Tibali


Christine spent 15+ years in the architecture, engineering and construction (AEC) industry before a career transition into the space sector. Armed with satellite remote sensing expertise and deep infrastructure knowledge, she started DirtSat to tackle urban sustainability challenges through geospatial assets.


Nathalie Decusse-Brown


Nathalie has 18+ years of experience in challenging engineering emvironments, including both energy and healthcare sectors. With deep technical data expertise, including analytics and statistics, she is a subject matter expert across technical, project and business operations.

Change your climate trajectory

Today is the day to take a step toward a carbon-free future.
Partner with us on that journey

An arial view of a rooftop garden