- Insulation as a sound barrier


Dear Shell,

We are renovating our basement and the TV room and a bedroom are below the two upstairs bedrooms. What R-level of insulation would work best to give us a sound barrier? R12 or R20?

Thanks, Michael

Dear Michael,

The following four steps will give you a good sound barrier system.

1. Use R-20 insulation up tight against the under side of the subfloor

2. Apply Donnacona under the joist

3. Install acoustical channel

4. Then apply your 5/8 drywall

Note: Hot air ducts into the basement should be closed off as they will transfer sound.

It's just that easy.

Article courtesy of: Shell Busey

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September 21st, 2023