roof pond

roof pond

A pond of water on a roof structure that cools a building by evaporation. Because the water increases the thermal mass of the building, it also increases the gain in solar energy, storing the absorbed energy during the day, when it is abundant, for later use.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
They focus on the environmental functions of roofs--both protective and selective; construction practices from European countries; roof ponds; cooling radiators; planted ("green") roofs; and applicability and performance data.
The other issue is good drainage -- if the roof ponds water, or the drainage is poor, it will darken much quicker.