I have a 20x20 detached, unheated, cinder block garage that has been my shop for the past 16 years. The shop has evolved over this time with little or no planning. I have decided that my next, perhaps most ambitious wood working project to-date, needs to be a shop remodel. Here are my immediate priorities:
1) Heat; therefore insulation
2) Central Dust Collection
I have several questions I’d like to submit to the collective wisdom and experience of the creek. I thought rather than ask them all at once, I would try a question of the week format. I have really appreciated the feedback on questions #1 - tool covers, #2 -framing & insulation , #3 - prefered wall surfaces. Now on to #4 - Insulating Concrete Floor
I'm strongly considering putting down 3/4" decking over sleepers and rigid foam w/visqueen vapor barrier under the sleepers and foam. The motive is comfort for the legs & knees as well as better insulation for the shop. I might even run one or two 220 and 110 circuits to the middle of the floor for the table saw, jointer and planer.
I'd love to hear from those of you who have done something similar. What decking did you go with - OSB or ply? How is it holding up? How did you finish it? Any regrets? Anything you would do differently. Curious to know what thickness of foam you went with, as well as spacing and width of your sleepers.