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Old 10-03-2019, 08:07 AM   #1
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Best soundproofing roxul vs pink vs drywall


Looking for your expertise with what works best. Need to soundproof furnace room that is below my bedroom. Oil furnace kicks in and the furnace is naturally louder than a natural gas furnace. So it isn’t for loud music or anything else.

Would you spend the money on doubling drywall or buying roxul safe n sound? Or drywall and use the pink stuff?
I’m looking for the best bang for my buck. Thankyou
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Old 10-03-2019, 09:41 AM   #2
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Re: Best soundproofing roxul vs pink vs drywall


The term soundproofing is optimistic. Some sound reduction can be achieved in many ways, however, sleeping upstairs in a zero noise environment will make sounds from below difficult to eliminate.

Roxul is much better than fiberglass and it can be regular Roxul as opposed to the "safe and sound". That name sells a lot of product but it is virtually identical to the regular, different thickness last I checked.

A resilient channel to isolate the drywall would also be good.

But don't expect any reasonable cost approach to give you a "sound proof" performance.

Bud
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Old 10-03-2019, 10:06 AM   #3
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Re: Best soundproofing roxul vs pink vs drywall


I have used fibreglass and safe and sound, not much difference in the sound that still gets thru. Decoupling the drywall with resilient channel helps a lot with other noise.

The problem with a furnace room is the duct work is often in the way of finishing a ceiling.

https://bettersoundproofing.com/roxu...soundproofing/
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Old 10-03-2019, 10:20 AM   #4
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Re: Best soundproofing roxul vs pink vs drywall


I would use the Roxul rather than fiberglass.

But could be a lot of that sound is coming through the ductwork. They make cloth-like isolators for ducts to minimize sound transmission through ducts. I once had a return - close above the furnace and into master bedroom. I closed it off and got a big sound reduction. Still got acceptable airflow. Eventually got a new, good furnace and opened up that return again.
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Old 10-03-2019, 12:57 PM   #5
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It isn’t the duct work. I’m out on a farm and these oil furnaces are known to be loud when the burn and generate the heat.
There are so many opinions on the net. And I’m not looking for it to be perfectly quiet.
I’m just looking at the cost of roxul and thinking 🤔. Geez maybe 2 layers of drywall is more cost effective. But once I try that it’s hard to go back and install roxul or fibreglass.
So just wondering what you have encountered.
I’ll definitely wrap the duct work if I drywall. Thanks for that idea!
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Old 10-03-2019, 02:07 PM   #6
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Re: Best soundproofing roxul vs pink vs drywall


Quote:
Originally Posted by hellothere123 View Post
It isn’t the duct work. I’m out on a farm and these oil furnaces are known to be loud when the burn and generate the heat.
There are so many opinions on the net. And I’m not looking for it to be perfectly quiet.
I’m just looking at the cost of roxul and thinking 🤔. Geez maybe 2 layers of drywall is more cost effective. But once I try that it’s hard to go back and install roxul or fibreglass.
So just wondering what you have encountered.
I’ll definitely wrap the duct work if I drywall. Thanks for that idea!
Do not drywall with out insulation.

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