Author Topic: Tile Installtion over MLV  (Read 3697 times)

jmkoons

  • Guest
Tile Installtion over MLV
« on: March 01, 2010, 08:13:50 PM »
I've got wall to wall MLV with closed cell foam now installed in the living room to deaden sound between upper and lower units. The original flooring was carpet over gypcrete, and I'm planning on having new carpet put down over the new subfloor. My condo has a living room fireplace, which I'm also planning for a remodel with the flooring work. The old fireplace tile had been chipped up so that the MLV could be placed over the hearth area to block transmission over that spot as well. My plan is to use some 12x12 stone tile I already have across the hearth. How would I lay out the new tile when taking into account the MLV? I know any tiles must be set in morter over a hard substrate such as a backing board, but backing boards are usually recommended to be screwed down into plywood. For use with gypcrete or concrete, other board types are recommended that apparently fasten into the cement with masonry screws. I'm thinking that fastening down the board through the vinyl and into the gypcrete will only defeat the soundproofing in this spot. Removing the MLV it in that area to set tile down rigidly to the floor with cement board or other backing material will obviously cause an even bigger acoustic leak between floors. Setting tile down in small areas over closed cell foam MLV must have been done before, but I can't seem to find guidance as to the proper steps. Any advice is appreciated!

Randy S

  • Senior Soundproofing Technical Specialist
  • Global Moderator
  • *****
  • Posts: 815
    • Super Soundproofing Co
Re: Tile Installtion over MLV
« Reply #1 on: March 01, 2010, 08:32:35 PM »
Well there lies the problem, with MLV closed cell underlayment you will have to use the backing board and except the transmission of impact noise.
The only other option is to glue down 2lb. MLV to the substraite followed by SSP-TL then thinset and your tile.

Here are the links.

http://shop3.mailordercentral.com/supersoundproofing/prodinfo.asp?number=09%2D00005%2D45%2D2

http://shop3.mailordercentral.com/supersoundproofing/prodinfo.asp?number=09%2D03640%2DTL

Feel free to contact me if you need further assistance.

Randy Sieg

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

jmkoons

  • Guest
Re: Tile Installtion over MLV
« Reply #2 on: July 26, 2010, 11:06:33 PM »
It has been a few months since I posted this, but have finally made progress on finishing work with my house. I've decided to leave the MLV over the fireplace as is, which I had marked off for the carpet installer to tack around. I'm placing a backer board over the top, then fastening that through the MLV into the gypcrete, then cementing down the tiles. Though there may be a small transmission leak through the screws from below, I don't imagine it will be a noticeable problem as compared to the noise which was all around the room before soundproofing.

Randy S

  • Senior Soundproofing Technical Specialist
  • Global Moderator
  • *****
  • Posts: 815
    • Super Soundproofing Co
Re: Tile Installtion over MLV
« Reply #3 on: July 27, 2010, 04:21:33 PM »
I agree with that 100%. It is just habit for us not to want any direct connections to the original substrate but there are exceptions to the rule. ie tack strips... but there is very little foot traffic in these areas anyway.
Let us know how it turns out!
Randy Sieg

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

 

anything