Roof Pond Definition

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.

Roof pond definition.

In the building trades the acronym tpo stands for thermoplastic polyolefin a material originally developed for pond liners and used extensively for roofing since 1989 it s a single ply membrane made from a polymerized combination of polypropylene and ethylene propylene rubber that can be attached to a roof with adhesive or with mechanical fasteners. Ponding water accelerates the deterioration of many materials including seam adhesives in single ply roof systems steel equipment supports and particularly roofing asphalt. So what is roof ponding. This review suggests that in some cases roof ponds can provide year round thermal comfort while reducing demand for active heating and cooling systems.

Flat roofs are inherently bad at draining water unlike sloped roofs. An insulated roof pond with materials such as polystyrene panels is placed over the roof and filled with water up to a certain level average water depth in the reviewed papers was 15 cm. Roof pond with wet gunny bags rpwgb and shaded roof pond with wet gunny bags shaded rpwgb are two roof pond permutations to be discussed here see fig. Ponding is the typically unwanted pooling of water typically on a flat roof or roadway.

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. The roof ponds of contained water are the heating and cooling unit. When drainage fails water will run to low points in a flat roof. A pond of water on a roof structure that cools a building by evaporation.

The roof ceilings of the building act as the structural support for the roof ponds. Overall 19 roof pond cooling and 4 roof pond heating systems were identified. Ponding water sources other than rain. A flat roof is a roof which is almost level in contrast to the many types of sloped roofs the slope of a roof is properly known as its pitch and flat roofs have up to approximately 10.

Leaks from cooler lines to structural issues building a flat roof can bring considerable advantages for your commercial roof primarily in providing more interior space. The roof pond approach brings the differing building aspects of a building roof ceiling heating and cooling system and heat distribution does away with ducts into one system.