I have read several articles re:cellulose vs fiberglass blown in insulation for attics. What about cellulose use in high moisture climates?

Asked by Elise
Renton, WA

Seattle area, low roof line, attic insulation, blown in fiberglass vs cellulose. Concern: Moist climate will decrease effectiveness of cellulose.


Sean Lintow Sr

Answered by Sean Lintow Sr

Naperville, IL

SLS Construction & Building Solutions

January 15, 2014

Well no matter which product you choose, if it gets moist you lose effectiveness. In order to prevent this, make sure you air seal the attic properly, don't do stupid things like installing power vents & make sure that all exhaust fans vent outside. It is also important that the baffles are installed properly in every bay. For More:

Tagged In: cellulose insulation, green insulation

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