I d blow insulation on the attic floor after air sealing of course.
Best cellulose insulation for attic.
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.
To hit code minimums you ve got to add new insulation on top of the old insulation.
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.
Fiberglass batts offer the easiest way to add attic insulation or just about any area of your home.
Or 7 inches of cellulose.
Cellulose provides an r value of approximately 3 5 per inch.
Cellulose blown in ceiling insulation is a good choice for diyers.
Pros and cons of cellulose attic insulation.
Modern technology of blanket insulation today is considered the best insulation for attic.
There are other materials and systems that you can use to insulate your attic.
You can get to the same place with either material.
Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
Fiberglass batt attic insulation pros and cons.
Pros and cons of attic insulation types.
Rolls and batts are produced of mineral wool and fiberglass.
Loose fill cellulose is relatively inexpensive yet still has an r value of about 3 5 per inch of thickness compared to fiberglass r value between r3 to r4 per inch.