I'm thinking pretty seriously about doing this. It's just too cold out there! What are my cheapest alternatives? The garage is 1/2 cinder block, 1/2 2x4 /shingles, and the sloped roof is the same. I was thinking I could put in a drop ceiling and roll out insulation above it, but I'd lose some storage.. what about heaters? I'm not looking to get it "live in" warm, rather, "work in" warm for energy cost reasons. low 50's would be fine.