Parapet Wall Flat Roof Ventilation

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

Parapet wall flat roof ventilation.

Parapet detail masonry cavity wall flat roof with parapet insulation. I have short 12 parapet walls surrounding a flat roof house in zone 2a. Venting in wood framed parapets. Flat roof detail masonry cavity wall flat roof insulation above and between joists.

Provide venting to each wall cavity. Treat these short parapet walls as part of the conditioned attic and cover. What is the best way of addressing the ventilation and weather barrier here. The parapet walls are connected to the attic i guess this would be termed ballon framed which is conditioned.

This video is about making a transition form a flat roof to a parapet wall with taracotta clay caps. If cavity is greater than 12 above roof insulation provide high low venting in each wall cavity. Diagram below explains the build up. The following images provide examples of flat roof details.

Flat roof detail masonry cavity wall flat roof insulation above and between joists. The 25mm batten space creates a clear airpath to the roof void below so reducing the possibility of condensation and mould growth.