What is the difference between rooftop detention and rooftop retention?
Retention means that a specific volume of water is retained on the roof for an indefinite period of time. Detention means to temporarily detain stormwater before discharging it as runoff.
RoofBlue DETAIN is intended for use as part of a water detention system, whose main function is to delay and control the flow of stormwater runoff. This delay allows more time for municipalities to treat runoff, which helps to prevent stormwater and combined sewage systems from overflowing (untreated) into local waterways.
RoofBlue RETAIN is LiveRoof’s patented solution for stormwater retention. It captures and retains stormwater, following a storm event, transferring water upward towards the plant roots as the soil dries out, to keep soil appropriately moist and plants healthy. This can result in enhanced plant growth, lower irrigation needs, and increased stormwater management on your green roof.