Spray Foam Attic Insulation Vs Fiberglass

Open cell spray foam insulation can expand up to 100 times its original size to fill every nook and cranny in the cavity where it is applied.

Spray foam attic insulation vs fiberglass.

Properly mixing and applying spray foam insulation requires substantial expertise and can only be done by trained professionals. Few construction topics bore homebuyers more than insulation. Used in roughly 85 of american homes fiberglass insulation is the most common form of home insulation. You re well aware that heating and cooling account for roughly half of the energy used in the average home.

Synergy home performance explains the differences between traditional fiberglass and spray foam insulation. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary. The big disadvantage with spray foam is cost. Spray foam attic insulation pros and cons.

And you also know that properly insulating a home helps homeowners save money and makes houses more comfortable. Spray foam provides the highest r value while open cell spray foam has about an r value of 2 2 to 3 5 per inch closed cell spray foam has about 6 7 per inch. Spray foam insulation is an air barrier material that creates a seal against air movement. I d blow insulation on the attic floor after air sealing of course.

Fiberglass cellulose and foam dominate the conversation but the. Spray foam insulation drawbacks it is the most expensive option with costs running as high as two or three times as much as fiberglass batts or cellulose loose fill. It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass. Fiberglass insulation vs spray foam insulation comparison.

Spray foam insulation for both types starts at about 1 50 per square foot and can cost more than 5 00 per square foot when a thick application is applied. Fiberglass installation labor cost is about 1 00 to 2 75 per square foot based on the amount of insulation and the location. Average cost of spray foam vs fiberglass insulation one board foot 12 x 12 x 1 of open cell foam insulation averages 0 45 to 0 80 cents the same amount of closed cell insulation costs between 1 and 2 a square foot of fiberglass costs between 1 30 and 3 50 on average fiberglass batts cost between 0 65 and 1 20 while a square foot of blown in fiberglass costs between 0 50. Fiberglass insulation is significantly cheaper than spray foam insulation but it is also less effective especially in extremely cold conditions.