How To Properly Vent A Flat Roof

It is important that air movement occurs and is not impeded by any framing members of the home.

How to properly vent a flat roof.

A ridge vent is a ventilation strip that is placed along the ridgeline of the home. The article notes that the ventilation cannot overcome the significant humidity drive into the flat roof structure caused by small air leaks. 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. They also come in four colour options.

Following manufacturer s instructions for securing the vent the roofer will likely spread plastic roof cement on the underside of the vent place it over the hole slip the flange under the top side shingles and lay the flange over the down slope shingles. Prior to installing the ridge vent a 1 inch wide strip of roof decking is cut out along both sides of the ridgeline to allow for air movement through the vent. Assuming you have a smooth surfaced asphalt built up roof system you will need to purchase turbine ventilators designed for low sloped roofs. Klober circular soffit vents provide eaves ventilation through the soffit and are a particularly easy option to install.

If the attic space is going to be conditioned either for living or mechanical purposes or if a home design calls for a vaulted ceiling provision r806 3 in the international residential code calls for the roof deck above the space to be vented continuously from the eave to the ridge. Cut hole in roof at each turbine vent location selected. Klober flat roof vents ventilation must also be provided through the eaves or roof ridges using fascia vents or the skylight upstand on the roof.