Proper Installatin Of Attic Vent Fan

A roofer will from the attic mark a spot near the ridge of the roof he may first use nails from the attic to mark preferred spots between two rafters.

Proper installatin of attic vent fan.

Though it s against building code to vent any kind of exhaust to an attic space many home builders have gotten away with this shortcut. Begin by removing the screws or nails. The attic fan kept my house cooler by 8f compared to pre fan installation days. Adding attic vents is a simple matter of cutting holes and installing vents.

But before you cut any holes plan the locations of the attic vents. Use hardware cloth metal flashing or scrap plywood to create a safety gap of at least 3 inches all around fixtures. Installation of this type of attic ventilation involves leaving a gap in the sheathing along the ridge and covering it with a perforated vent. If your attic uses soffit vents at the bottom and gable vents at the top for ventilation having a gable vent fan drawing air into the attic would not be the best solution since it would tend to create positive pressure in the attic which could reverse the natural air flow that occurs when heat rises up through the soffit vents and out through the gable vents.

Several different ways you can move that hot air to the outside. Another method a little bit better is if you have a gable style roof and a gable vent on one end of the house you can attach this to the back of a gable vent. This was observed on numerous days following the installation. If the existing gable vent is smaller than the diameter of the fan you ll need to remove the vent and install either a larger vent or an automatic shutter.

Temp 92 f at 5pm. How to install turbine vents. Temp 84f at 5pm. You install an attic fan through the roof and flashed under the shingles.

Keep in mind that installing an attic fan on your own can be dangerous. During workdays would leave air conditioner off when leaving in the morning. One is to route it over to a soffit vent and attach it to the back of the soffit vent but this can work against your exhaust fan because that s actually an air intake so not as good as other methods. Installing an attic fan over an existing gable vent is easiest but you can also install an attic fan on your roof if you don t have a vent to use.

A gable vent installation will require a different kind of fan than a rooftop installation. Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them. Static vents often protrude from roofline thanks to. Photos 1 6 show how it s done.

After attic fan installation ac still off during day.