In the heart of Washington, D.C., the Cielo at 300 M Street is a lavish 427-unit apartment building that spans a city block. The scope of Prospect Waterproofing Company’s work on this new construction project was extensive, involving 75,000 square feet of hot rubberized asphalt IRMA roofing (American Hydrotech, Inc.), 17,000 square feet of green roofing, 22,000 square feet of architectural pavers on pedestals, and 36,000 square feet of hot rubberized asphalt waterproofing across multiple building elevations. The project, spanning two years, successfully achieved LEED Gold certification by incorporating sustainable elements such as green terraces and roofs, contributing to stormwater management and reducing the impact on the city’s infrastructure. Monolithic Membrane 6125® (MM6125), the original hot fluid-applied rubberized asphalt membrane with over 60 years of proven performance in waterproofing and roofing applications, played a crucial role. MM6125’s single-component composition, seamless application, and 40% post-consumer recycled content aligned seamlessly with sustainability goals. The rooftop spaces, featuring a resort-style pool and lounge with architectural pavers, surpass expectations in Washington, D.C.’s competitive luxury apartment market. The completed project is a testament to excellence, offering residents a distinctive and sustainable living experience with captivating views of the nation’s capital.

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