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Deer Hunter
Basement Sound Barrier

We're finishing our basement to allow another family to live there. There's concern that the noise from above will be too loud below.

Is it worth installing insulation before sheet rocking the basement ceiling? If so, is there a specific insulation or technique we should use?

Thanks in advance for your help.

Shubi
Re: Basement Sound Barrier
Deer Hunter wrote:

We're finishing our basement to allow another family to live there. There's concern that the noise from above will be too loud below.

Is it worth installing insulation before sheet rocking the basement ceiling? If so, is there a specific insulation or technique we should use?

Thanks in advance for your help.

Keep in mind that whatever you decide to use should not have a vapor barrier, or if it does, as kraft faced insulation, slash the barrier to allow it to breathe. A vapor barrier between two conditioned areas could result in condensation and associated problems.

Blue RidgeParkway
Re: Basement Sound Barrier
jkirk wrote:

very true shubi, the vapour barrier never goes on the inside portion of the structure, only on the warm side of exterior walls and ceilings

Thats just not true. Not only are there MANY cases where it is correct to have a vapor barrier or a vapor retarder on the INSIDE portions of a structure but correct placement of any vapor barrier if it is even appropriate to have one, is determined by the design and materials of the structure itself AND the CLIMATIC REGION where the structure is located.

steam showers, unheated crawl spaces vented or unvented depending on climate and region, not every location has the same climate, heating and cooling days and moisture conditions that are the same as Nova Scotia Canada. The Original Poster has not provided a Location or Region so NO assumptions can be made as to the appropriateness of a VAPOR barrier or a vapor retarder.

Vinyl floors, laytex paint, radon remediation, interior bathrooms with mechanical ventillation, the list goes on. I can think of many locations in a home in say Florida where it would be very wrong to install either a vapor barrier or a vapor retarder, where it would be very right to install it in the same place on a home in northern Alaska, deer are hunted in both states.

http://www.buildingscienceconsulting.com/resources/roofs/ceiling_vapor_barrier.htm

regarding the questions from the original post, your local building department would be your first best resource information if you are planning to convert your basement to a legal and safe multi-family rental unit. several other things may need to be done long before you start insulating or drywalling anything. regarding sound transmission from above to below one of the things to consider is your floor covering types on the floor above.

Deer Hunter
Re: Basement Sound Barrier

Thanks all for your comments. jkirk .. your reply was very helpful.:)

bsum1
Re: Basement Sound Barrier
Blue RidgeParkway wrote:

Thats just not true. Not only are there MANY cases where it is correct to have a vapor barrier or a vapor retarder on the INSIDE portions of a structure but correct placement of any vapor barrier if it is even appropriate to have one, is determined by the design and materials of the structure itself AND the CLIMATIC REGION where the structure is located.

steam showers, unheated crawl spaces vented or unvented depending on climate and region, not every location has the same climate, heating and cooling days and moisture conditions that are the same as Nova Scotia Canada. The Original Poster has not provided a Location or Region so NO assumptions can be made as to the appropriateness of a VAPOR barrier or a vapor retarder.

Vinyl floors, laytex paint, radon remediation, interior bathrooms with mechanical ventillation, the list goes on. I can think of many locations in a home in say Florida where it would be very wrong to install either a vapor barrier or a vapor retarder, where it would be very right to install it in the same place on a home in northern Alaska, deer are hunted in both states.

http://www.buildingscienceconsulting.com/resources/roofs/ceiling_vapor_barrier.htm

regarding the questions from the original post, your local building department would be your first best resource information if you are planning to convert your basement to a legal and safe multi-family rental unit. several other things may need to be done long before you start insulating or drywalling anything. regarding sound transmission from above to below one of the things to consider is your floor covering types on the floor above.

Where would there be vapor on the inside?

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