I replaced my main floor bathroom fan .However I can hear the vibration noise. What I can to eliminate that annoying noise?
Is this a problem for houses made with wooden I-beam joists?
2007-10-07 18:19:06 · 7 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
Use rubber to connect fan to house. put mounting bolts or screws though rubber.
2007-10-07 19:01:28 · answer #1 · answered by DanD 4 · 0⤊ 0⤋
The web of the I-beam is 3/8" or 1/2" thick material, not very substantial, compared to a 1-1/2" thick solid beam. As such, the web does not dampen the sound, instead it reflects sound like a drum.
You need to isolate the fan box from the I-beam to minimize fan vibrations from being transferred to the I-beam web. Sandwich two rubber faucet washers at each point where the fan box is screwed to the I-beam: one washer between the box and web, and another between the box and under the screw head. Maybe add a flat washer between the screw head and adjacent washer.
If you have more room to work in the ceiling, a better way is to screw the fan box to a strip of wood (e.g. a furring strip) with rubber isolation washers, then screw the strip of wood to the I-beam, again with more isolation washers, but using a separate set of screws. That way, there will not be a direct transmission path for sound to travel directly to the I-beam web.
Good luck.
2007-10-07 19:05:02 · answer #2 · answered by Tom-SJ 6 · 0⤊ 0⤋
Typically, the beam is flush with top of the foundation wall (whether block or concrete) and then a sill bolted down to the foundation. Anchor bolts in the masonry wall, bolts in the steel. Advantages When you specify the steel for the foundation, it is a bit easier to make the steel flush with the top of the wall. Also there is an easy nailing surface with a plate on the steel. Yet another reason is wood will slowly compress over the years. The sill will distribute it out. And don't make it pressure treated. Answer above me is right. As far as sizing the steel, call an engineer. But the contractor that sets the steel may be able size it, too.
2016-04-07 10:33:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋
To decrease vibration and voices you can put an insulator such as fome or rubber washer where fan is connected to the joist . Also a rubber washer between the register and dry wall will help.
2007-10-07 19:06:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Wood beams would have been better, but a vibration sound is because some thing is loose regardless of the structure. Go find what is loose, screw it or caulk it so it no longer vibrates.
2007-10-07 18:33:58 · answer #5 · answered by dude 7 · 0⤊ 0⤋
Run a few screws rite through the metal housing into the stud
2007-10-07 20:20:58 · answer #6 · answered by Anonymous · 0⤊ 0⤋
And buy a better fan.
2007-10-07 18:42:32 · answer #7 · answered by Snoonyb 4 · 0⤊ 0⤋