Spray Foam Insulation. It’s so pretty. When it’s done. It’s not so bad to install either, most of the time is prep and cleanup, which still isn’t so bad (total project time ~ 3 hrs?, just one hour of actual spraying)
It’s good to have a helper available to get new spray tips ready and keep the cords untangled, and be a second set of eyes on the lookout for uneven spraying (me!) Also, they’re there to take awesome pictures of you in a tyvek suit. Then, spray:
So that’s it, and hopefully that’s the last time we’ll be spray-foaming (or regular insulating) our house. We’ve successfully foamed the entire north elevation on the first two floors (minus intentionally exposed brick in the powder room, but we foamed the bit of exposed west wall in there to balance it out). The whole third floor and attic is spray-in recycled cellulose insulation. And the south elevation on the first two floors… Welllll it gets heated by the sun, right?