new insulation over loose fill?
There's a post similar to my situation but i'm unsure if they are describing the same old stuff i have in my finished attic area.
i have a 100+ 3-story victorian in a cold-climate region. the 3rd story is an A shaped room with a steep pitch and a flat ceiling. it is also a heated living area (radiators). there's a closed knee wall area with a little door that i can access and then at the top of the room there's access panel that leads up to the tip of the house. in this area it looks like someone blew in a greyish loose pellet-like material which comes up to the top of the rafters. Maybe a couple of inches thick.
my question: is it possible to lay down fiberglass batting insulation perpendicular to the rafters and on top of the existing insulation? And since the loose fill contains no vapor barrier, shouldn't I have one?
thanks for any info!
It's a bit chilly up here!