When comparing blown in insulation both fiberglass and cellulose are nearly identical in price both costing around 0 70to 0 80per square foot for 6 inches of insulation.
Blown cellulose vs blown fiberglass in attic.
As a recycled paper product cellulose is prone to absorb moisture that can cause wood rot and mould.
Fiberglass is the most common.
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 is the second most common.
Cellulose resists blowing when installed fiberglass tends to blow around stick to the attic ceiling and drift.
But which one should you pick.
Cellulose produces much less static than fiberglass.
Advantages and disadvantages of fiberglass.
According to research done at the oak ridge national lab fiberglass loses up to 50 of its r value in very cold conditions.
The higher the r value the more efficient it is.
Fiberglass batts however are less expensive costing on average 0 30to 0 40a square foot for 6 inches of insulation.
Dry blown cellulose will characteristically settle and sag in place reducing its r value.
Wet blown cellulose is also subject to similar contamination too.
If you ve got bare uninsulated areas on the floor of your attic getting some kind of insulation in there is a must.
At 3 5 per inch of material the r value of blown in cellulose is 23 better per inch than fiberglass batts.
Both types of insulation can you know insulate.
Blown in cellulose installer benefits local source provides consistent deliveries.
Making cellulose a better choice for homes in northern climates.