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.
Cost for cellulose or fiberglass for attic.
Once it has settled fiberglass has an r value of 2 1 2 7 per inch while cellulose has an r value of approximately 3 0 per inch.
Fiberglass batts however are less expensive costing on average 0 30to 0 40a square foot for 6 inches of insulation.
The cost is around 0 60 cents sqft when hiring a insulation company near you to do the job.
Or 7 inches of cellulose.
Loose fill cellulose typically costs about 0 50 to 1 per square foot installed.
The cost is similar to that of fiberglass batts but if anything slightly less.
Dense packed cellulose often costs 2 to 2 25 per square foot installed.
On average you can expect to pay between 1 25 to 2 00 per square ft.
The cellulose insulation cost per bag is typically around 30 to 40.
R 30 to r 60 insulation will cost between 0 15 to 0 65 cents per square foot.
The type of insulation the density and the brand may also impact price.
Blown in cellulose is often more expensive than fiberglass and costs about 1 20 per square foot.
It is made with recycled materials like newspaper and cardboard.
Installing 15 bags of r 30 loose fill insulation per 1 000 square feet would cost about 500 on average which includes labor fees.
Loose fill blown fiberglass insulation has another slight problem.
Loose fill insulation is usually made of fiberglass or cellulose.
You can get to the same place with either material.
Will usually cost about 1 600 2 700.
For example cellulose often costs more than fiberglass.
Damp spray cellulose costs about 0 60 to 1 80 per square foot of wall space.
As the temperature difference between the living space and attic increases the r value of blown fiberglass diminishes.
On average a 28 5 pound bag of fiberglass loose fill insulation costs 33.
To install attic insulation and material cost for cellulose fiberglass with a r value of.
The higher the r value the more you ll pay for each project.
If the budget is slim he opts for blown in fiberglass and dense pack cellulose but even then he uses spray foam under the roofline.
Risinger says the cost for a 2 000 square foot home in foam versus fiberglass is about 3 000 to 4 000 more.
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.