Asked by: Maura Rauhome and garden indoor environmental quality
Can you use unfaced insulation on exterior walls?
Last Updated: 23rd May, 2020
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Keeping this in consideration, should I use faced or unfaced insulation on my walls?
When to Use Faced or Unfaced Insulation. Unfaced insulation—the type without paper—is what you would use if you are adding insulation to your attic or to place between floors when living space is above and below. Unfaced is also your best choice for adding soundproofing to interior walls.
Subsequently, question is, do you need a vapor barrier on exterior walls? The short answer is: if your wall doesn't have a vapor retarder, there is no need to worry. Builders worry way too much about vapor diffusion and vapor retarders. It's actually very rare for a building to have a problem caused by vapor diffusion.
Thereof, what kind of insulation do I need for exterior walls?
In the case of walls, the composition can also impact the R-values needed for optimal energy efficiency. The most common insulation materials are fiberglass, cellulose and foam. Insulation types include loose fill, batts, rolls, foam board, spray board and vapor barriers.
Is r11 insulation good for exterior walls?
R11 is for sound and should never be used for exterior walls. It can be, but you're spending money with little benefit. R13 is standard 2x4 insulation.