Author Topic: best carpet underlay for impact noise  (Read 10556 times)

zackmax

  • Guest
best carpet underlay for impact noise
« on: February 05, 2012, 10:38:34 PM »
I have a serious problem with impact noise from above. I have already tried talking to them, complaining to management etc. several times but it has obviously not helped.

I am now going to offer to pay half to get a soundproof underpad/underlay for their carpet.

I wanted to ask for suggestions here on what to get. The noise of concern is impact noise: running, walking, stuff being dropped on the floor, stuff being dragged across the floor.

Please help! Thanks.

whatismisophonia

  • Guest
Re: best carpet underlay for impact noise
« Reply #1 on: February 06, 2012, 07:01:52 AM »
evidently the dimple pad; though ive never used it.  Sever problems with impact noise are some of the most difficult to solve, and a simple pad will probably not be enough, as the sound youve described seems pretty severe, though it should definitely help.  You may (probably will) end up taking down your ceiling, adding resilient channel, and attaching 5/8ths drywall to the channel (it keeps the floor from vibrating the ceiling to a degree).  The principle for soundproofing against such low frequency vibrations running through structual members is called de-coupling, which is the act of isolating the vibrating section from the rest of the structure; the absolute best way to do with is with air, not with a pad, as vibrations move through any solid substance better than air. As such, youll either want to de-couple the ceiling above you by the method i mentioned earlier, or de-couple the floor.  The best way to separate the floor is to build a new floor on top of the old one, with vibration absorbant pads inbetween.  Im sure Randy will comment soon, and he can fill you in on more detail.  It's also important to add any and all construction details you can give about the structure of your ceiling and second story floor.

whatismisophonia

  • Guest
Re: best carpet underlay for impact noise
« Reply #2 on: February 06, 2012, 07:36:39 AM »
Actually, the dimple mat seems to be mostly used with hardwood flooring (sorry :-[) You said "carpet"; probably youre looking for mass loaded vinyl with a foam backing, which is also sold by super soundproofing.

Randy S

  • Senior Soundproofing Technical Specialist
  • Global Moderator
  • *****
  • Posts: 796
    • Super Soundproofing Co
Re: best carpet underlay for impact noise
« Reply #3 on: February 06, 2012, 06:04:10 PM »
Ok, yes the answer here is to use Mass loaded vinyl with closed cell foam.
pull up your carpet, padding and tack strips. seal any cracks in subfloor with caulking.
Install MLV underlayment foam side down wall to wall, seal field seams with metal tape and caulk the perimeter to the wall under base boards.

Make sure you purchase #8 density Rebond carpet padding, (a must) lessor density padding will not hold up for high traffic and you achieve a greater impact reduction because you are absorbing the impact at the source.

install tack strips through underlayment around perimeter and install your carpet.

http://www.supersoundproofingsales.com/Flooring/products/27/

Are there recessed lights in the ceiling below?
and is the cavity insulated or not?
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

zackmax

  • Guest
Re: best carpet underlay for impact noise
« Reply #4 on: February 15, 2012, 02:44:20 PM »
hey guys,

Thanks for your response.
I'll have to find someone in Toronto to be able to do that.
So I understand this is a better solution than to drop my own ceiling and do the resilient channel thing?

Also need to calculate what this would cost for about a 1000 sq ft area.

Thank you much!

Randy S

  • Senior Soundproofing Technical Specialist
  • Global Moderator
  • *****
  • Posts: 796
    • Super Soundproofing Co
Re: best carpet underlay for impact noise
« Reply #5 on: February 15, 2012, 04:41:45 PM »
This is a very simple install even your carpet guy can do it..

The rough cost for 1000 sqft. is around $4,000

soundproofing from the source is always better than soundproofing from the receiving end.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

 

anything