I'd like to join in Dawn's inquiry into attic insulation. I just bought a 1930 Cape in Arlington, Virginia, and I live in the second floor bedroom/attic. The second floor is designed as one large master bedroom with wall-to-wall wood paneling. Behind the walls are tons of crawl/storage space. In most areas, it is difficult to see what kind of insulation was applied b/c the roof was covered with dry wall. Exposed areas reveal, at most, R-19 insulation...there's some older fiberglass insulation without an R-rating, but which is pretty thin -- maybe 3-4 inches. Do you recommend hiring someone to blow insulation behind the drywall? (no insulation along vertical walls separating the room from the roof walls) Also, is it a good idea to replace the deteriorating exposed insulation with R-30 or R-40 fiberglass insulation?