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World Green Roof Day

Join the movement and make a positive impact on the environment this World Green Roof Day! Plant some greens, reduce carbon footprint & enjoy the beauty.

Sunday

June 2027

Last updated February 7, 2026 · by the Holiday Calendar Team

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YEARLY DATEJune 6

OBSERVED INInternationally

CATEGORYNature

SUBCATEGORYConservation

INTRO

Introduction

PHOTO

Get ready to celebrate the beauty and benefits of green roofs on World Green Roof Day on June 6! This day was first established in 2020 by the European Federation of Green Roofs and Walls, with the aim of raising awareness about the importance of green roofs in creating more sustainable and eco-friendly cities. Green roofs not only add natural beauty to urban landscapes, but also provide numerous environmental benefits such as reducing air pollution, managing stormwater runoff, and improving energy efficiency. So let's take a moment to appreciate these green havens atop our buildings and spread the word about their positive impact on our planet.

TIMELINE

World Green Roof Day Timeline

First Notable Use of Green Roofs

Green roofs became popular in Scandinavia during the 1800s, particularly in rural areas, due to their good insulation properties.

Modern Green Roofs Appear

The modern era of green roofs started in Germany in the 1960s with the development of drainage systems to support plant growth on building rooftops.

Chicago's City Hall Green Roof

The City of Chicago installs a green roof on City Hall as a demonstration project, showcasing the sustainability benefits of green roofs in urban settings.

Toronto's Green Roof Bylaw

Toronto becomes the first city in North America to enact a bylaw requiring green roofs on new commercial, institutional, and residential developments.

France's Rooftop Regulation

France passes a law mandating that all new commercial buildings must have either solar panels or green roofs, pushing the green roof movement forward globally.

First World Green Roof Day

The first World Green Roof Day was established by the European Federation of Green Roofs and Walls to raise awareness about the environmental benefits of green roofs.

GET INVOLVED

How to Celebrate World Green Roof Day

Plant a rooftop garden

Get involved in the green roof movement by planting your own rooftop garden. Create a beautiful and sustainable space on top of your building and celebrate World Green Roof Day in a meaningful way.

TAKE

Take a green roof tour

Find out if there are any green roofs in your area and take a tour to learn more about the benefits and importance of green roofs. You may even get some inspiration for your own rooftop garden.

ATTEND

Attend a green roof event

Check for any local events or workshops focused on green roofs and attend to learn more about this important environmental movement. You can also meet like-minded individuals and potentially even network with professionals in the industry.

SPREAD

Spread awareness on social media

Use your social media platforms to spread awareness about World Green Roof Day and the importance of green roofs. Share facts, photos, and tips for creating your own green roof to inspire others to join the movement.

VOLUNTEER

Volunteer at a local green roof organization

Find a local organization or non-profit that focuses on green roofs and volunteer your time to support their cause. You can help with maintenance, education, or even fundraising efforts to make a difference in your community.

WHY THIS DAY MATTERS

Why We Love World Green Roof Day

They add beauty to urban spaces

Green roofs not only benefit the environment and save money, but they also add beauty to urban spaces. They create a more natural and aesthetically-pleasing landscape in cities dominated by concrete and steel, making them a welcome addition to any building.

Green roofs help the environment

Green roofs are an environmentally-friendly option for buildings. They reduce energy consumption, improve air quality, and reduce stormwater runoff - all of which have a positive impact on the surrounding ecosystem.

They can save you money

Green roofs provide natural insulation, reducing heating and cooling costs for buildings. They also increase property value and can attract tax incentives in some areas. So not only are they good for the environment, but they can also be beneficial for your wallet!

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