Flat Roof Parapet Vent

The most common flat and low slope roof leaks occur at flashings and roof penetrations such as at plumbing vents chimneys and roof mounted air conditioners or heat pumps.

Flat roof parapet vent.

Can use round louvered soffit vents to limit bulk water intrusion if venting holes are in exposed locations. Each carton contains six 4 foot pieces 24 lineal ft of roof 2 wall vent a 25 foot long x 14 inch wide roll of flashing one bag of 2 1 2 nails and four ec 400 roof 2 wall. The cap flashing requires a gap between the siding large enough to allow for air movement to and from the vent. 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.

Banding is typically used to seal soil vent pipes on single ply roofs such as fdt rhepanol pib and involves wrapping an unreinforced membrane around the pipe to a minimum height of 150mm. Instead the air is vented through the roof to the parapet walls the parapet then incorporates a continuous strip vent beneath the cap flashing. Provide venting to each wall cavity. Roof 2 wall vent incorporates the active weather foil technology and enhanced snow screen feature of our x 5 ridge vent line to stop rain and snow at the point of entry.

Normally you would find the venting at the soffit the underside of the roof overhang but that s not possible with the parapet. For areas which do not need above cover hole with bug screen. Max baker and stonewall jackson would be proud. If cavity is greater than 12 above roof insulation provide high low venting in each wall cavity.

While it s a circuitous route the air is working 24 7 and we ve found it to be a good system so long. Very common also are leaks at parapet wall flashing and parapet wall caps. The cure for parapetitus is continuity of the control layers and letting things move when they have to move.