Dense-packed dry cellulose: any downsides?
I’ve been going over insulation techniques to use on a new home. Every insulation contractor that we’ve talked to has a different system. One in particular that is being pushed is dense pack dry cellulose. I have personally witnessed wet cellulose settling in our own home, however based on everything I have read about and heard about dense pack is that it will not settle and that our current home’s insulation was not installed properly. I know that cellulose is somewhat springy so I understand the theory is it will hold true in the wall for hopefully many many years. The contractor that is pushing it uses a netting type of material to hold in the dry cellulose until the drywall is up.
My question is then, what are the downsides to dense pack dry cellulose? The only one I’ve seen so far, is that any exposure to moisture will cause it to settle or condense. But, my take is that if you have that much moisture in your walls then you probably have a bigger issue at hand. I’m curious what some unbiased experts have to say on it.
I live in Michigan, zone 5. The house will have 1/2″ sheathing on the outside with Tyvek regular housewrap, and vinyl siding over that. The inside is standard 1/2″ drywall.
Thank you so much for the valuable information on this website.
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