Flat Roof Edge Ventilation

Hot roofs have the roof deck then insulation then the roofing material.

Flat roof edge ventilation.

How much ventilation does a flat roof need. A drip edge vent is made of a corrosive resistant material that sticks out about three inches back from the roof edge and then bends downward over them. Any type of roof from tpo to epdm can be either hot or cold. Choosing the correct ventilation solution for a flat roof will play an integral role in extending a structure s lifespan.

2 as far as insinuation if your flat roof has it you don t really need it on the sloped part. Where building permits pulled. Primary flat roof operations the focus of this article involve the venting opening of existing roof structures such as. A cold roof or hot roof.

See the benefits of attic ventilation a new roof is more than just shingles. Flat and low slope roof designs to avoid moisture condensation problems flat roofs call up a whole new breed of building moisture problems how to avoid moisture traps under flat roofs avoid mold rot caused by moisture trapped under un vented flat roofs questions answers about the cause cure prevention of moisture problems in flat roofs and similarly hard to ventilate structures. 1 was the job done by code. Is flat roof load bearing adequate for the added wight of sloped roof on top.

It depends on where the insulation is installed. Ventilation is crucial to these areas as they affect the building as a whole both inside and out. It s unavoidable that the thermal temperature in the roof space will bear the brunt of the heat generated in the living spaces below. What you do need is ventilation of the sloped part.

2011 code of practice for control of condensation in buildings stipulates that there should be a ventilation gap between the insulation and the bottom of the flat roof deck of at least 50mm. The answer depends on the type of roof you have. In a concrete deck for example this gap could be created by fixing 50x50mm timber battens at 600mm centres and attaching the insulation to. 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 divided into primary and secondary operations. Flat roof ventilation is achieved by creating air changes to the attic or plenum. Drip edge vents are a two in one installation that promote water shedding at the eaves and rakes of a roof while also allowing for ventilation into the attic.