Flat Roof Soffit Ventilation

Vent area ranges from about 35 sq in.

Flat roof soffit ventilation. Per linear foot covered by cap shingles est. More ways to filter. Ventilation is crucial to these areas as they affect the building as a whole both inside and out. On flat roofs with soffit vents the only mechanism that might drive air thorough the vented space would be occasional wind conditions that happen to blow air against one side of the building and up through the soffit vents across the roof to outlet on the opposite side a rather speculative roof venting system you ll probably agree.

Conventional rigid aluminum ridge vent typical 20 sq in. Simply drill a hole into the soffit board for the circular vent to fit into then push the vent into them. The article notes that the ventilation cannot overcome the significant humidity drive into the flat roof structure caused by small air leaks. The first is an individual soffit vent which is most common as they are the easiest to install.

Removal of excess heat and moisture will help the life of the roof and will help the functionality and efficiency of the hvac systems. Flat roof ventilation is achieved by creating air changes to the attic or plenum. A soffit vent is a small vent that is installed under the eaves of a roof soffit that allows fresh air from outside to be drawn up into the roof to keep a building ventilated. We stock two main types of soffit vents.

Intake vents such as soffits are placed lower on the roof usually under the eaves. Individual circular or continuous soffit vents. Per vent does not provide uniform ventilation between all rafter bays. Master flow 2 in.

Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Enter square footage calculate or enter the square footage of the attic or area to be vented. The two roof ventilation options intake vents and exhaust vents should be placed to take advantage of the natural increased speed of air circulation. Resin circular mini wall louver soffit vent in white 6 pack model rlsc2 view the master flow intake vents 9 28 9 28.

Roof louvers or spot vents typical 50 sq in. This occurs through the rising of warm air and the falling of cooler air. Consequently the article concludes that the concept of venting a flat roof is no longer safe and instead don t vent the flat roof and install a smart vapor retarder inboard.