Provide venting to each wall cavity.
Roofing parapet wall.
The cure for parapetitus is continuity of the control layers and letting things move when they have to move.
While a roof parapet wall may seem like a small detail in the grand scheme of the entire building design it can actually change the dynamic of an entire roof both in terms of cosmetic detailing and safety.
And with the trend in rooftop gardening and entertaining parapets serve to save people from accidental falls.
Venting and roofing for parapet walls.
Different types of parapet walls and their uses are discussed below.
If cavity is greater than 12 provide high low venting in each wall cavity.
Venting in wood framed parapets.
In commercial construction parapets are ubiquitous and they are often required.
The perimeter of the roof assembly insulation is wrapped to prevent interstitial airflow from the parapet into the multilayered rigid insulation of the field of the roof.
Parapet walls can be constructed using different materials like reinforced cement concrete steel aluminium glass etc.
Today the primary function of a parapet wall is to protect the edge of a roof assembly from destructive wind forces called vortices plural for vortex.
This video is about making a transition form a flat roof to a parapet wall with taracotta clay caps.