Did i get the wrong insulation? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 13 Old 07-16-2017, 09:57 AM - Thread Starter
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Did i get the wrong insulation?

Hello all,

So i got the Roxul AFB acoustic insulation, however they're 2.5 inches thick and i would have over an inch of space on the walls and couple of inches on the floor would this work or i simply purchased the wring one ?



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post #2 of 13 Old 07-16-2017, 10:25 AM
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post #3 of 13 Old 07-16-2017, 10:41 AM - Thread Starter
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Quote:
Originally Posted by BIGmouthinDC View Post
here is the data on those products.

http://www.bobgolds.com/AbsorptionCoefficients.htm
Thanks for that, great info on that link..

I guess i didn't ask the right question in my initial post, what I'm trying to find out if the empty space of about 2 inches will make thwm useless ? Or it wont matter ?

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post #4 of 13 Old 07-16-2017, 10:57 AM
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Quote:
Originally Posted by tnycman View Post
Thanks for that, great info on that link..

I guess i didn't ask the right question in my initial post, what I'm trying to find out if the empty space of about 2 inches will make thwm useless ? Or it wont matter ?

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You want to fill the space you don't want it to have gaps and you don't want to pack it in/compress. How much difference will have the extra space have? I don't think anyone can actually tell you other than it is not optimal and when spending the $ and all the work it is best to get the right stuff that fits correctly with no gaps and not too tight.

If it were me I would take it back and get the correct stuff and I think the link Big put in his post is so you can see which product is best for sound absorption and the difference between different products and thicknesses.

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post #5 of 13 Old 07-16-2017, 11:12 AM
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I'm not sure what construction method you are using here?



What is that metal and what is it doing?
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post #6 of 13 Old 07-16-2017, 11:28 AM - Thread Starter
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Originally Posted by BIGmouthinDC View Post
I'm not sure what construction method you are using here?



What is that metal and what is it doing?
The picture was upside down, for some reason tapatalk app keeps rotating the picture, but its a standing wall, if you rotate it once clockwise.

On the floor there werr metal studs, that the previous owner has placed and there were bunch of electical cables going through most of them going to the floor below, it was a lot of work cutting and moving this cables so i left it alone, that has increased the depth of that wall by 2 inches..



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post #7 of 13 Old 07-16-2017, 11:55 AM
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at the end of the tape measure is that concrete or the back of drywall for another room? If drywall the original builder created an electrical hazard.
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post #8 of 13 Old 07-16-2017, 11:56 AM - Thread Starter
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Originally Posted by BIGmouthinDC View Post
at the end of the tape measure is that concrete or the back of drywall for another room? If drywall the original builder created an electrical hazard.
Drywall

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post #9 of 13 Old 07-16-2017, 12:46 PM - Thread Starter
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Originally Posted by bscool View Post
You want to fill the space you don't want it to have gaps and you don't want to pack it in/compress. How much difference will have the extra space have? I don't think anyone can actually tell you other than it is not optimal and when spending the $ and all the work it is best to get the right stuff that fits correctly with no gaps and not too tight.

If it were me I would take it back and get the correct stuff and I think the link Big put in his post is so you can see which product is best for sound absorption and the difference between different products and thicknesses.
It seems thar there is no way but take them back to the store, that thing was heavy and big bags, took me two trips to get it..

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post #10 of 13 Old 07-16-2017, 01:27 PM
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Originally Posted by tnycman View Post
Drywall
Imagine someone coming along and nailing up some baseboard molding in that room. There is a good chance of running a nail into a Romex cable. You should fix that while the wall is open.
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post #11 of 13 Old 07-17-2017, 08:38 AM
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Quote:
Originally Posted by BIGmouthinDC View Post
Imagine someone coming along and nailing up some baseboard molding in that room. There is a good chance of running a nail into a Romex cable. You should fix that while the wall is open.
It also looks like there is a CAT 5 in there too. CAT 5 and electrical don't get along very well.
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post #12 of 13 Old 07-17-2017, 09:14 AM - Thread Starter
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Originally Posted by BIGmouthinDC View Post
Imagine someone coming along and nailing up some baseboard molding in that room. There is a good chance of running a nail into a Romex cable. You should fix that while the wall is open.
Make sense, however the area you are seeing behind that wall is a crawl space in the attic, i doubt thete ever be a baseboard molding in the crwal space..

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post #13 of 13 Old 07-17-2017, 10:45 AM
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Your insulation is designed for 2x4 framing, which is 3-1/2" deep. It looks like the space is about 5-1/4". You'd be better off with insulation that is designed for 2x6 framing, which is 5-1/2" deep. The insulation that you purchased will "work" to a certain extent, but not as well as thicker insulation that will fill the space all the way.

It would seem to me that there is a very viable way to take them back to the store. It took two trips to bring them home the first time. Two more trips would allow you to bring back the wrong insulation and bring home the right kind. Sure, it is a hassle, but if you are going to do it, why not do it right?
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