In his exclusive interview with House Digest, contractor Kevin Keen explained how to insulate a garage ceiling with rigid ...

“Blown-in cellulose is popular for garage attics, and this type of insulation is also DIY-friendly. Cellulose insulation has an approximate R-value of 3.5 for each inch of insulation.

Find out how much ceiling insulation typically costs. ... Insulating your ceilings will cost between $875 to $7,350 for a 1,200-square foot area, depending upon the blown-in insulation material used.

1. Blown-In Insulation. Blown-in insulation, also known as loose-fill insulation, is installed using a machine that blows or sprays the insulation material into the space that you are insulating.