If your vent is letting in a lot of noise it s probably also causing a draft or even preventing your room from heating evenly.
Roof power vent noise.
Lift up the edges of the surrounding roof shingles so you can see the edges of the vent.
If the noise drives you crazy new spring loaded backdraft dampers 9 to 30 depending on the size should solve the problem.
Climb onto the roof and locate the vent that is causing the noise.
The vent hood ducts through a rigid or flexible pipe to a cap on the roof or side of your home.
Ridge vents or power vents.
Out with the hot air in with the cool.
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.
One way to do this is to create a plug out of the grate cover itself.
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.
The goal is to get rid of the stale hot and humid air in your attic and to continuously replace it with fresh cool air from outside.
Well placed windows doors and other openings allow air to circulate without creating.
Remove the screws holding the vent in place.
Unscrew the cover and bring it to your workstation.
A well ventilated home is drier healthier and more comfortable.
Well putting a temporary plug on it could help with all of these issues.
About california ventilation building codes.