Green roofs are often characterized with moss and vegetation. Blue roofs, on the other hand, don’t have the lush appeal that green roofs have. However, these two types of roofing systems function in a similar way. They both act to mitigate storm water runoff.
Blue Roofs: What Are They?
Blue roofs are typically flat because their purpose is to retain rainwater. They come with control devices, which are used for regulating drainage outlets. These controls enable the roof to retain or drain the water as needed. Typically, a blue roof will retain the runoff until local sewage treatment facilities can already process the water.
It may seem contrary to common sense to let water pool on the roof – especially when you consider how experts often recommend draining the water as soon as possible and installing seamless gutters to protect your home against rainwater. However, it’s important to keep in mind that blue roofs are specially designed in a way that the water doesn’t really come into contact with the actual roofing material.
Can Blue Roofs Really Do Their Job?
Since blue roofs are relatively new, they’re at a stage when builders are still conducting tests to ensure the system’s effectiveness and efficiency. Nevertheless, the results of these tests are undeniably promising. In New York City, for example, a “blue roof tray” system resulted in a 45% reduction in rainwater runoff. It involved equipping roofs with trays that could hold up to two inches of water. These trays were not attached to the roof membranes so the roof is sufficiently protected from runoff.
Guarantee Roofing and Seamless Guttering has a long tradition of top-notch workmanship. From gutter installation to roof repair, local homeowners have come to trust us for various home improvement jobs. To know more about our services, call us at (812) 650-5700, or fill out our contact form.
