Term Description
Area divider

A raised, flashed assembly, typically a single- or double-wood member attached to a wood base plate that is anchored to the deck. It is used to accommodate thermal stresses in a waterproofing system where an expansion joint is not required or to separate large roof areas or roof systems composed of different/incompatible materials; it may be used to facilitate installation of tapered insulation.
Roof area divider

See "area divider."