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Old 10-21-2012, 08:32 AM   #1
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wet cellulose ?


what happens to cellulose when, and after, it gets wet ?

no, mine didn't get wet. but i bought some home when it was lightly raining, open pickup truck. and it got me to thinking.

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Old 10-21-2012, 08:58 AM   #2
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wet cellulose ?


It dries out pretty quickly.

If it gets matted down, just crumble it back up.

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Old 10-21-2012, 11:59 AM   #3
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wet cellulose ?


Cellulose wall cavity spray is installed at a moisture level of 30% to 40% as standard practice. 20-25 years ago this material was often installed at 60% moisture. Today that would not be regarded as good practice, because it often led to excessive moisture in sheathing, framing, and drywall and it made long drying times necessary. It didn't, however, have any negative effect on the insulation itself.
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Old 10-21-2012, 07:20 PM   #4
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wet cellulose ?


interesting, good to know.

i blew mine in today. boy, is this stuff fluffy. i feel like i don't have enough. about 10". i should have bought more bags.
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Old 10-22-2012, 01:10 AM   #5
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wet cellulose ?


If you followed the coverage chart, ie installed the number of bags in the bag count column, you have the R-value you specified. 10 inches at installed density is probably going to be around R-30 or a bit more at settled density depending on the brand. If you kept the technical specs for the product you installed you can always check the R-value by measuring depth and multiplying by the R-factor. Cellulose R-factor is not nearly as density dependent as fiber glass so fluffing isn't an issue.
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