Adding new insulation
We have about R19 of blown in fiberglass insulation in our attic currently (which is 24 yrs old). We're in the midsouth area - zone 3 on the energy star map. Very steep roof so plenty of room in the attic to add more and no heating/cooling equipment in the attic.
We're looking to add another R19 or possibly even R29. However, both contractors we have received bids from said they would use blown-in cellulose insulation. I've read that you should NOT use blow-in cellulose over blow-in fiberglass because cellulose is heavier and will compress the fiberglass. So what do we do? Find a company that will suck out the old fiberglass insulation and put in all new?