> I had the asbestos removed two years ago and need to insulate them before winter sets in.

I had mine removed just before last winter and the difference was noticeable. My bill went way up without the insulation. I'm about to tackle this project on mine, too. As I mentioned in another comment, I think I'm going to order from https://www.buyinsulationproductstore.com. Home Depot doesn't have as much of a selection.