Why do most contractors prefer fiberglass over cellulose? And some other questions.
I’m in Sacramento area in Northern California. I have been looking into putting more insulation in my attic. The house was built in early 90s and has batt and fiberglass insulation, but I think it will be better to have more. I’ve been asking around contractors but all but one was doing only fiberglass. It seems like cellulose is better in many aspects but I wonder why contractors in my area hate it. The dust issue in cellulose installation is messy enough to scare them away?Green Fiber also has poorer ratings than Atticat in Home Depot and Lowes. Is it just marketing or reflects real issues with cellulose?
I’m leaning towards doing it myself, thinking that nobody would pay attention to every corners in my tight attic to do air sealing as if it’s his/her own house and that I can do cellulose. It won’t be easy but doable. I see a lot of complaints of a free blow-in equipment that comes with cellulose purchase at Home Depot or Lowes. Is it still true? Unlike the atticat fiberglass machine, the cellulose one doesn’t seem to have a switch at the end of flexible pipe and I wonder how to coordinate the communication easily with someone in the attic and some in the garage with the equipment.
In my local Home Depot stores, they sell only two cellulose products, Green Fiber and TAP. Green Fiber seems to be more popular but TAP argues that they are better in controlling bugs and rodents. I wonder if you could advise me what to buy and any way to buy them cheap.
I do have some but not serious rodent droppings in the attic. Can I just leave them there and put cellulose over it? I am going to put some bleach over and put cellulose over.
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