Hey Fill,
Pennywizz6 wrote:Thanks a bunch for your insight Keith!
Glad to help.
But wow, gave me a lot to think about! I first had no clue that the mass part was really that heavy that could cause such a thing to happen such as a floor collapsing, it raises a concern . . .
Yup. Gravity's a bitch sometimes.
. . . however i doubt I can afford much more than a layer of insulation and the tiles (not perfect, but will definately lower the DB throughout the house rather than just having a half inch or so of plywood trying to stop drums a few feet below!
Not by much though...
My house is fairly new (2001ish) so i dont know if its still as vulnerable to older houses or not.
You would
think that "newer" meant "stronger." This is true in some cases, since building codes have matured and lessons have been learned over time. However, there's also the "they don't build 'em like they used to" angle...

...so, in short, it's best
not to make any assumptions based on the age of a house. Remember, homebuilders will put the
least amount of money into a building project in order to maximize profits -- they'll do the minimum necessary for the job. If the plans don't call for a finished basement, don't
expect the structure to be able to handle it without doing the research necessary to
prove that it will.
I found this product
http://www.soundprooffoam.com/ultra-tou ... ation.html which IMO sounds quite ideal for the price and the performance with an overal NRC rating of 1.15 and low frequencys around a 1NRC rating, from what i know that is pretty good! IT also has a DB reduction of 21-48 STC, also a good chunk!
One of the things you'll learn about soundproofing is that there is no shortage of companies selling products for the job. Unfortunately, many of them are
crap -- a total waste of money. Others are good but too expensive -- more conventional products, if installed carefully and properly, will be more efficient and possibly even more effective.
You need to learn more about STC. In short, you
cannot simply add STC ratings together to get a sum total. You'll also find that STC is pretty much
meaningless when it comes to isolating acoustic drums -- think of Wile E. Coyote holding up the little umbrella when the boulder is about to crush him!
I will most likely put up my ceiling rails, put acoustic sealant between the drywall and rails, put up the insulation posted above, and then put up the tiles. That will give a seal betwen the cieling and the floor, a barrier of cieling tiles, and the 3.5 inches of insulation.
I dunno about that...

If you're planning to use the type of ceiling tiles common in office buildings, you're not going to have much benefit from that.

I don't have the numbers, but Steve ("knightfly") does, and they're not pretty.
Venting... i dont know where to even begin, really id rather not think about it haha. however you did bring up that it really is needed. Ill have to look into how many vents are needed and where to branch off of the main vent. More work, yippee

Adding "vents" to your existing house system may not (and probably
will not) be sufficient. You're building a room without any windows, right? If so, you'll need a
fresh air supply. Here is
the point in my project thread that I decided to incorporate the a Fantech HRV (heat recovery ventilator). Learn more about ventilation.
I will also have to discuss with my mom about permits and that thread, right now I do not have one (i didnt know it was even needed O.o) , and up to this point have not had one, will there be some sort of penalty because of that?
Possibly... But if you (actually, your mom!) proactively seek compliance, you'll probably be OK, even if you "sinned" by building without a permit to begin with.
Thanks again for your help, its very much appreciated, with just living with my mom and older brother theres really isnt easy access to this sort of information!
The Internet is full of great gems of value, and I agree, this is definitely one of them!
In closing, see
my "Stages of Soundproofing Enlightenment" thread and tell us what phase you think you're in right now.
--Keith
