Blown In Fiberglass Vs Cellulose Attic

According to research done at the oak ridge national lab fiberglass loses up to 50 of its r value in very cold conditions.

Blown in fiberglass vs cellulose attic.

Properly installed they will both remain in place for the life of the home. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. Going to insulate your attic everything you need to know about the job and what to pick. The higher the r value the more efficient it is.

At 3 5 per inch of material the r value of blown in cellulose is 23 better per inch than fiberglass batts. Its installation costs are higher. More consistent pricing from cellulose manufacturers than fiberglass. Cellulose insulation blown in wall r 3 8 r3 9.

At this writing our suppliers currently offer cellulose for less than fiberglass. So can fiberglass if you blow a little more of it on top. Cellulose produces much less static than fiberglass. So it seems to me the real debate.

Making cellulose a better choice for homes in northern climates. Cellulose insulation blown in attic r 3 6 r3 7. Costs depend on your insulation contractor their suppliers and market conditions. Cellulose is less of a health risk compared to fibreglass.

When comparing blown in insulation both fiberglass and cellulose are nearly identical in price both costing around 0 70 to 0 80 per square foot for 6 inches of insulation. Cellulose is easier to keep out of bird blocks and air conditioner condensate pans. Cellulose resists blowing when installed fiberglass tends to blow around stick to the attic ceiling and drift. With that said most homeowners agree that blown cellulose is slightly more efficient due to the face that it blocks more air than fiberglass.

Cellulose can get you to r 40. Good insulation lowers energy bills by trapping heat or cold air inside a building. This concern can actually be avoided in both cases if the insulation is more densely packed in the spaces but fiberglass will require special training and tools to do so and even then it proves more difficult than cellulose. While fiberglass insulation is easier to install and more common used about 85 of the time cellulose insulation is often considered more energy efficient.

Cellulose is known to create a massive cloud of dust when it is installed meaning breathing apparatus is required if you are considering a large installation. Fiberglass manufacturers have developed blown fiberglass insulation they claim won t settle over time.