Asbestos insulation is usually greyish-brown or silver-gold and has a pebble-like appearance, making it tricky to differentiate from cellulose insulation.
Blown-in insulation costs range from $750 to $3,800, with an average cost of $1,725 for insulating 750 square feet of attic space.
Closed cell foam consists of tightly packed cells that prevent air and moisture from entering, making it more rigid and stable than open cell foam.