Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts.
Best cellulose insulation for attic.
You can get to the same place with either material.
Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc.
Assuming your current attic insulation is made from fiberglass and has a value of r 13 you d have to add roughly 10 inches of additional fiberglass to hit r 38.
Or 7 inches of cellulose.
Fiberglass batt attic insulation pros and cons.
Pros and cons of attic insulation types.
Cellulose blown in ceiling insulation is a good choice for diyers.
The big disadvantage with spray foam is cost.
Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics.
Cellulose provides an r value of approximately 3 5 per inch.
To hit code minimums you ve got to add new insulation on top of the old insulation.
I d blow insulation on the attic floor after air sealing of course.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
Pros and cons of cellulose attic insulation.
Rolls and batts are produced of mineral wool and fiberglass.
Blown in cellulose is an environmentally friendly material made from recycled newspaper so it s easier on your skin and lungs.
Modern technology of blanket insulation today is considered the best insulation for attic.