How To Vent A Flat Roof With Parapet Wall

Venting in wood framed parapets.

How to vent a flat roof with parapet wall.

For areas which do not need above cover hole with bug screen. Can use round louvered soffit vents to limit bulk water intrusion if venting holes are in exposed locations. A parapet is a barrier which is an extension of the wall at the edge of a roof terrace balcony walkway or other structure. That way you can use the parapet wall to detail a vent in the back side of it.

Provide venting to each wall cavity. Alternatively you can drill lots of holes to connect the joist spaces or use web trusses and then install vents in the flat roof surface as in commercial. If cavity is greater than 12 above roof insulation provide high low venting in each wall cavity. 2 i call them the baker principles.

Instead the air is vented through the roof to the parapet walls the parapet then incorporates a continuous strip vent beneath the cap flashing. The sprawling flat roofs of commercial buildings frequently support a variety of objects large and small including ac units roof vents plumbing stack vents boiler flues exhaust fan vents skylights solar panels and electrical conduit. Where extending above a roof a parapet may simply be the portion of an exterior wall that continues above the line of the roof surface or may be a continuation of a vertical feature beneath the roof such as a fire wall. Incidentally another benefit parapet walls is that they help conceal such eyesores.