SirKit found a detector that monitors both CO and Natural Gas leaks. He put it downstairs by the new furnace. We'd gotten CO monitors as soon as they were available, after Vitas Guerulaitis, a tennis star, died of carbon monoxide poisoning.
*peers through the window*
Anybody home?
I just sent you a couple of e-mail links to some articles from This Old House about ice dams. Hope the info will help you with the problem in your work room!