Attic Vent Noise

A loose attic vent or shutter on a window can make a banging noise in the wind.

Attic vent noise.

If it s loose it will wobble and vibrate against the surface creating a huge racket. Lift up the edges of the surrounding roof shingles so you can see the edges of the vent. The vent hood ducts through a rigid or flexible pipe to a cap on the roof or side of your home. 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.

Often a stiff wind will open vent dampers causing them to periodically clang shut. 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. Climb onto the roof and locate the vent that is causing the noise. This is actually the most common noise issue with attic fans.

Remove the current worn out bearings and replace them. If the noise drives you crazy new spring loaded backdraft dampers 9 to 30 depending on the size should solve the problem. Air passing through ducts and radiators can sometimes create a loud noise as can water passing through pipes. Cut through any sealer that may be present.

Due to regular wear and tear these bearings can become worn out or lose their lubrication ability. 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. The attic fan tends to makes a humming noise when it has a few blades and is running at a high speed setting. Remove the screws holding the vent in place.

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. Heating ducts as they cool also make banging noises as do. This can cause the fan to start making constant noise and in some cases even a loud squealing sound.

This problem is pretty easy to fix. Building noises such as gurgling drains and some building odors sewer gas methane toilet smells are often traced to defects in the plumbing vent system.