Flat Roof Parapet Height

Minimum of 12 to top of parapet.

Flat roof parapet height.

The height of the building is calculated to the highest roof element not the parapet or mechanical protrusions vents chase etc. The parapet itself is standard wood framing with an applied siding in this case t g 1 4 cedar. First of all commercial and multi unit residential buildings are a lot bigger than single family homes in most cases. Also there may be several roof penetrations and other obstacles that should be factored into the measurement.

The assembly is straight forward but what complicates matters is that the roof needs to be vented. At the highest point of the sloped roof the parapet is about 10 tall at the lowest point the parapet is about 14 tall. There are several solutions to help you raise the height of your parapet that are cost effective and aesthetically pleasing. In order for a roof parapet to provide adequate fall protection a roof parapet railing should be at least 42 in height.

2015 ibc code commentary. Top of parapet below cap to be sealed with fluid applied flashing. The parapet height may have to have a minimum height if it is part of a fire rated assembly between units depending upon the use and classification of the structure. Height of roofing at wall.

It is used at a single ply roof membrane sloped per foot to a gutter like on the bainbridge residence that we designed and built above. However when a roof slopes down toward an exterior wall and parapet with a slope greater than 2 12 further analysis is required to determine if a taller parapet is necessary. Do not lap tpo over top of parapet unless required by unique construction conditions. Measuring a flat roof on a typical commercial building with a parapet can be arduous and complicated.