I am about to build a new house on the Olympic Peninsula in WA state. Is this area too damp to use blown in celulose in the ceiling and dense pack celulose blown into the walls? I have moved here from a very dry climate and am not sure what to do in this environment. Thaks, Jim
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I'd get advice from a building inspector. Or, better yet, ask an insulation contractor that installs both. They'll give you the pros and cons for your area. If done right, like a mooney wall system, cellulose dense pack should be fine if you follow proper procedures with vapor barriers, flashing and such.
I live in western North Carolina and we have more annual rainfall than Seattle. Many E-builders and GreenBuilders use this system with no apparent problem here. I have 20" blown cel in my attic installed 20 years ago with proper attic ventilation and no problems.
Tim
Except that most insulation contractors only install one or the other, and whichever they don't install they'll always bad-mouth.
I see problems wioth cellulose in remo and retrofit situations, but when building new, there is no reason to fear cellulose with the right detaiing for the climate