I was in the process of addressing temperature issues with my home. I had squirrels in the attic a few years ago, and this year a couple of bedrooms were quite noticeably colder. An energy audit from 2010 indicated an R value of 32 in my attic. Regrettably, I let that slide and didn't take advantage of rebates.
Zenic Insulation was the first company to respond to my calls. I thought they had a reasonable price. Zenic was very flexible with schedule, and even offered to help connect venting for the new bathroom ceiling fans I was putting in.
They came on time, were neat (as neat as can be when blowing cellulose), and took me from R32 to R60. Apparantly, I had close to no insulation where the squirrels were hanging out.
For the garage ceiling, they made a hole in the drywall and did an investigation. The builder's fiberglass bats were not between studs, they had fallen to the drywall. There was a fair bit of gap between the plywood floor and the actual bats. Zenic blew in cellulose to fill the void, and said the R value should be close to 70 in there now.
I'm looking forward to the winter to really feel the difference. The fact that cellulose has rodent deterring properties is a big bonus in my case. I feel very good about finally getting this done, and I am glad I went with Zenic.