How do blue roofs work?

What is a blue roof? On a blue roof, a system of detention ponds collects storm water, temporarily stores it, and then releases it slowly when the rain has stopped. It acts as a temporary sponge, mimicking the hydrology of the site before the building was constructed.

What is the purpose of a blue roof?

Rooftop detention, also known as a “blue roof”, is designed to provide temporary storage and slow release of stormwater runoff. This technique is most commonly used in dense urban areas where other methods of stormwater detention are impractical.

Are blue roofs good?

They are known to improve air and climate quality (reduce heat island effect), promote biodiversity, reduce energy consumption, and even improve water runoff quality. Blue roofs are noted for their water storage and reuse, mitigation of runoff impact, and reduction of building energy consumption.

What is the difference between blue roof and green roof?

Blue roofs are less costly than green roofs due to the lack of materials required. … Blue roofs do not provide benefits such as energy use reduction or habitat and aesthetic appeal, but due to the light colored roofing material they can also provide sustainability benefits through rooftop heat reduction.

INTERESTING:  You asked: Can you felt a roof without removing tiles?

What is a blue roof made of?

Benefits of a Blue Roof

It is designed to slow the release of rainwater into the drainage system and to discharge the water completely over a 24-hour period.

Why do hospitals have blue roofs?

A blue roof is a roof of a building that is designed explicitly to provide initial temporary water storage and then gradual release of stored water, typically rainfall.

How do you get a blue roof?

“Right of Entry” centers are named for the form that residents fill out granting permission for the Corps of Engineers and its agents to go onto individual properties to install the temporary roof. Residents can call toll free 1-888-ROOF-BLU(1-888-766-3258). Remove debris from your roof. Secure your pets.

What is blue roof design?

A blue roof is a roof designed for the retention of rainwater above the waterproofing element of the roof. … Blue roofs are typically flat, without any fall, with control devices regulate drainage outlets that enable water to be retained or drained.

What is a green roof system?

A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly–sloped roof. Green roofs are also known as vegetative or eco–roofs. They fall into three main categories—extensive, intensive, and semi–intensive.

What is brown roof?

A brown roof is where the substrate surface is left to self-vegetate from windblown and bird lime seed dispersal. Biodiverse roofs and brown roofs are two different things: Biodiverse roofs are where seed or plants are introduced into the substrate at the time of construction.

INTERESTING:  What are soft spots on a roof?

What has a blue roof in China?

The phrase “rain on a blue tin roof” sounds like a romantic scene, but in a residential area of Guiyang, capital of Guizhou province, it is more a matter of pragmatism. Each residential building in the area is topped with an attic built with blue tin.

Why are rooftops painted green in Korea?

In South Korea, like that image above. The green is wateproof paint. It’s for preventing water of rain or snow leaks under the roof when the building is old or damaged. But white waterproof painting is getting popular thesedays, as it blocks heat from the sun unlike the green paint.