Venting A Flat Roof With 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.

Venting a flat roof with parapets.

These can be ridge vents wind turbines or the flat vents your roofer wants to install. Provide venting to each wall cavity. Venting in wood framed parapets. The solution seems reasonable but we are definitely going to end up with a cold roof though not in the traditional sense.

If cavity is greater than 12 provide high low venting in each wall cavity. There are two types of flat roof systems warm and cold roofs which affect the positioning of the ventilation. We also have a parapet on a flat roof and the ventilation solution is not through the cladding but the design flows air over the parapet. Nothing built yet but in theory the solution should work well.

Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. Good attic ventilation is important for preventing ice dams in the winter. That way you can use the parapet wall to detail a vent in the back side of it. Attic must have 5 sq.

When thermal insulation is placed below the deck the ventilation must also be on the underside. Flat roof ventilation allows for the circulation of air in the property particularly for warmer rooms in residential buildings. Normally you would find the venting at the soffit the underside of the roof overhang but that s not possible with the parapet.