Remember this post about how to save money by painting your basement ceiling black rather than drywalling it? This has been the most popular post of mine on the My Home Redux site.
Andrew wrote me asking how to handle the areas between joists where insulation rests. He was cutting plywood for each area and caulking it in. Unfortunately, there does not appear to be an easier way. Simply spraying or painting the insulation would reduce its R-value and decrease its insulation ability.
He will continue to send me updates as he goes with steps along the way. So mark this post and come back to see how his basement progresses.