I found Knights Insulation on Homestars. Nathan came to the house to give us an estimate. He was very friendly and informative. Took his shoes off and carried the ladder all the way upstairs without banging or scrapping the walls (hey, that's important). The crew were friendly, efficient and very clean. The bill was exactly the estimate. No surprises. We went from R12 to R50 and what a difference it has made. The upstairs is actually liveable! I would highly recommend Knights Insulation.