How To Vent A Flat Roof With Parapet Wall

Provide venting to each wall cavity.

How to vent a flat roof with parapet wall. For areas which do not need above cover hole with bug screen. Normally you would find the venting at the soffit the underside of the roof overhang but that s not possible with the parapet. Incidentally another benefit parapet walls is that they help conceal such eyesores. Connect the water control element layer of the roof to the wall the air control element layer of the roof to the wall the vapor control element layer of the roof to the wall and finally the thermal control element layer of the roof to the wall.

That way you can use the parapet wall to detail a vent in the back side of it. Venting in wood framed parapets. 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. 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.

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. If cavity is greater than 12 above roof insulation provide high low venting in each wall cavity. Can use round louvered soffit vents to limit bulk water intrusion if venting holes are in exposed locations. 2 i call them the baker principles.