How To Vent A Flat Roof With Parapet Wall

If cavity is greater than 12 above roof insulation provide high low venting in each wall cavity.

How to vent a flat roof with parapet wall.

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. Provide venting to each wall cavity. 2 i call them the baker principles. Normally you would find the venting at the soffit the underside of the roof overhang but that s not possible with the parapet.

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. Can use round louvered soffit vents to limit bulk water intrusion if venting holes are in exposed locations. Venting in wood framed parapets. A parapet is a barrier which is an extension of the wall at the edge of a roof terrace balcony walkway or other structure.

Coming from me it should by now. For areas which do not need above cover hole with bug screen. Instead the air is vented through the roof to the parapet walls the parapet then incorporates a continuous strip vent beneath the cap flashing. Incidentally another benefit parapet walls is that they help conceal such eyesores.