Retrofitting A Roof Vent

Don t cut into any rafters.

Retrofitting a roof vent.

Locate the top of the hole about 15 in. They are super easy to fit either during the process of installing a new roof or retrofitting to older existing roofs. Mark the hole with chalk and set your saw depth to cut through the shingles and the roof sheathing only. Slide the vent under the shingles so they cover the top half of the vent flange.

For best performance the airspace in the vent chute should be a minimum of 2 in. There are various designs on the market from visible humped versions to almost unseen flat profile varieties. The aura solar fan retrofit models are designed to replace existing roof vents. The difference is that a power vent water heater pulls in combustion air from the space around the appliance then uses a fan to propel the exhaust through the vent.

With v baffle our retrofit insulation baffle you can even out the temperature of your home lower your energy bills prolong the life of your insulation extend the life of your roof reduce your attic s temperature prevent mold and mildew buildup in your attic prevent roof rot and so much more. The lower half of the flange sits on top of the shingles. Unless you re bulk filling rafter bays between 2 10 or 2 8 rafters with closed cell spray foam this approach will likely require you to fur out the rafters to accommodate additional insulation to achieve desired r values. Below the peak of the roof.

The honeycomb matrix along with the screen mesh sold together can be used in a variety of retro fit applications. Tile vents or slate vents are by far the easiest professional solution to roof ventilation problems. Apply a bead of asphalt roof cement on the bottom of the vent. Roof vent retrofit from the outside in reroofing is the perfect time to lift the hood and make short work of an otherwise awkward venting job.

By mike guertin issue 278 oct nov 2018 synopsis. This article details the process of venting air sealing and insulating the area along exterior walls where the rafters meet the top plate. The aura gravity ventilator pulls hot air with its long louvers utilizing the venturi effect. The aura solar is a much better alternative because it is not open to the sky preventing rain and snow from entering.

Nail the lower corners with roofing nails and tar the heads. Aura solar fans are a perfect replacement for turbine vent heads. The vent that protects continuous dormer eave foundation gable retrofit soffit our retrofit kits and matrixes are available simply for existing installations where removal of current hardware is unrealistic. The aura gravity ventilator will last as long as the roof itself and will always work like new unlike the worn out roof turbines they replace.

Cut a square hole in the roof the same size as the hole in the base of the vent you re installing.