Roof Pond Meaning

Flat roofs are inherently bad at draining water unlike sloped roofs.

Roof pond meaning.

So what is roof ponding. Roof pond a pond of water on a roof structure that cools a building by evaporation. What causes roof ponding. Ponding water accelerates the deterioration of many materials including seam adhesives in single ply roof systems steel equipment supports and particularly roofing asphalt.

When drainage fails water will run to low points in a flat roof. The water will then sit and create a pond the longer water sits on a roof the more likely it is to cause damage over time. 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. Ponding is the unwanted pooling of water typically on a flat roof or roadway.

The roof pond design became popular with the development of the sky thermal system designed by harold hay in 1977. Ponding synonyms ponding pronunciation ponding translation english dictionary definition of ponding. On low slope asphalt roofs ponding water allows the oil solvent components of the asphalt to leach out and evaporate leaving the roof membrane brittle and susceptible to cracking and leaking in the ponding location. There are various designs and configurations for the roof pond system but the concept is the same for all designs.

Pond ed pond ing ponds v. Debris blocked the culvert and the. In both processes the roof acts as a heat exchanging element which is cooled by evaporation on its surface longwave radiation to the sky 1 or both. Roof ponds provide cooling benefits through indirect evaporative cooling and or radiant cooling 19 22 23 24 25 26.

To form ponds or large puddles. Well it s not as fun as it sounds. Roof ponds with wet gunny bags shaded roof ponds ventilated roof ponds and roof ponds with movable insulation proved to be more effective relative to other variants of roof pond cooling systems.