how many types of blown in insulation are there
Blow-in cellulose insulation has been around since the 1920âs and consists predominantly of recovered or recycled newsprint and/or corrugated cardboard, treated with a fire retardant. Three main types of blow-in cellulose insulation are used in residential application: loose fill, stabilized, and wall-cavity spray. Spray-in Foam Spray-in or spray-on polyurethane foam expands to fill cracks and voids to form a tightly sealed barrier.