photo of a house with green roofingStronger storms are devastating states across the US and causing severe floods each year. All levels of the government are working hard to manage stormwater, improve drainage and sewer systems, and protect Americans from the flooding — and an effective way to do so is through the implementation of green roof solutions.

ILSI Engineering, a civil engineering firm based in New Orleans, shares that adopting green roofing practices help improve water evaporation rates and reduce urban temperatures. It also increases air quality, insulation, and energy efficiency rates, as well as biodiversity in cities.

Eco-friendly Rainwater Management

Green roof systems involve turning rooftops into eco-friendly gardens designed to improve rainwater retention, lessen the load on stormwater and sewer systems, and serve as natural filters for rainwater runoff. They can be applied to any conventional roof. In fact, these roof-top gardens are becoming more visible in both commercial and residential buildings in various countries, not just the US.

Deciding on a Roofing System

Green roof systems are categorized as extensive, intensive, or semi-intensive. Extensive green roofs are more lightweight and fit better for extensive installations. Its thin soil and limited irrigation system make it low-maintenance but create stressful growing conditions for plants.

An intensive green roof solution, meanwhile, uses deep soil and requires efficient irrigation and drainage systems. This type of green roofing system costs more than an extensive one. However, it offers greater plant diversity and better insulation than an extensive system.

Last, a semi-intensive green roof system has elements of the first two types. It features deeper soil layers, sustains a variety of plant life, and requires moderate irrigation and maintenance.

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Installing a green roof system not only benefits the building it is in but also its surrounding communities. Widespread adoption of these eco-friendly rooftop gardens in urban areas will not only help prevent flooding but also improve overall aesthetics and air quality of the area.