Parapet Wall Flat Roof Ventilation

Venting in wood framed parapets.

Parapet wall flat roof ventilation.

Where there is a parapet or an external wall abutment to the flat roof the fv250 ventilator can be used above a 150mm timber upstand battened off the wall by 25mm as shown below. What is the best way of addressing the ventilation and weather barrier here. Provide venting to each wall cavity. I have short 12 parapet walls surrounding a flat roof house in zone 2a.

Treat these short parapet walls as part of the conditioned attic and cover. Flat roof detail masonry cavity wall flat roof insulation above and between joists. The following images provide examples of flat roof details. Flat roof detail masonry cavity wall flat roof insulation above and between joists.

Diagram below explains the build up. Parapet detail masonry cavity wall flat roof with parapet insulation. This video is about making a transition form a flat roof to a parapet wall with taracotta clay caps. Can use round louvered soffit vents to limit bulk water intrusion if venting holes are in exposed locations.

Ventilated parapet detail cold roof installation of a typical ventilated parapet detail with the dryseal flat roofing system on a cold roof construction. Flat roof detail examples.