Attic Vent Noise

This problem is pretty easy to fix.

Attic vent noise.

If the noise drives you crazy new spring loaded backdraft dampers 9 to 30 depending on the size should solve the problem. A loose attic vent or shutter on a window can make a banging noise in the wind. Cut through any sealer that may be present. Remove the screws holding the vent in place.

The vent hood ducts through a rigid or flexible pipe to a cap on the roof or side of your home. Due to regular wear and tear these bearings can become worn out or lose their lubrication ability. Here we explain the causes and cures of these problems. Of course you try to make the attic scuttle hole use air tight trim on your ceiling cans but it would be foolish to ignore the benefits of a reasonably powered attic fan working in connection with adequate soffit venting.

If it s loose it will wobble and vibrate against the surface creating a huge racket. In order to get rid of the hum you need to either operate the fan at a low speed or replace the fan with a new one that has more blades. A loose shutter on an attic window or loosened attic vents can cause a banging sound if it s windy as can branches hitting the roof. Heating ducts as they cool also make banging noises as do.

The mount can become loose especially on fans that are installed on the roof. Climb onto the roof and locate the vent that is causing the noise. Remove the current worn out bearings and replace them. Air passing through ducts and radiators can sometimes create a loud noise as can water passing through pipes.

Attic fans also have small ball bearings that help lubricate the fan s movement. Roof vents and power roof vents are made to work in conjunction with vented soffits so that outside air will replace superheated attic air during hot summer days. Often a stiff wind will open vent dampers causing them to periodically clang shut. The attic fan tends to makes a humming noise when it has a few blades and is running at a high speed setting.

This is actually the most common noise issue with attic fans. When you hear a banging coming from the attic and are trying to determine the cause you are most likely dealing with one of these four animals.