I just had central heat and air put in and the loose fiberglass insulation from the attic came through the holes in the ceiling. According to an article on your site, "Some observers contend that fiberglass particles can cause cancer if inhaled..." Do any observcrs say it doesn't cause cause cancer? I don't know how to get rid of all of the particles that have gathered everywhere and I haven't been wearing a dust mask while trying to clean it up. Some of it was in large pieces I could see, but it's surely around here unseen, too. Might it come through the vents now that they're installed? What's the safest thing to do?

Hi, I have a bi-level home with a pull down stair case to the attic and a whole house fan which we use frequently. On these real hot days we use the air conditioner. I noticed the hallway being hotter. It seems that the air conditioning unit is pulling the hot air from the attic through the fan louvers and the attic staircase. Is there any way to insulate them and to keep them usable when I want to without going up into the attic and covering them. I was hoping that I could install some kind of weatherstripping Any suggestions? Thanks, Anita