The profile of specific components, their configuration or sequencing, can vary with the roof system, climatic differences, and regional or area practices. Dimensions as shown are recommended minimums and are intended to be approximate to allow for reasonable tolerances due to field conditions.

This detail is suitable for flashing round pipes used to support equipment, electrical conduit, water and gas lines, sheet metal vent flues, plumbing soil pipe vents and other similar penetration. For sunny, hot, and/or high altitude projects located in winter-time heating climates, WSRCA suggests that thermoplastic single-ply roof membranes and flashing ply(s) be white, or another light color, to provide a reflective surface minimizing heat gain and thermal aging.

Certain components as depicted in these details may not be provided by the roofing contractor.