Compare spray foam vs fiberglass insulation costs summary.
Spray foam insulation r value comparison.
You can use the small pressurized cans of foam.
Some installations can yield a higher r value than traditional batt insulation for the same thickness and can fill even the smallest cavities creating an effective air barrier.
The common denominator among varieties of insulation is the r value.
Spf insulation is rarely used in thicknesses of 10 or 15 inches.
The r value of spray foam insulation is approximately 6 per inch so those using spray foam as their insulator will need about 6 3 inches of thickness to reach r 38.
Products with a higher r value provide greater insulation.
Eco spray foam insulation.
We ve included those values for the r value comparison of spray foam insulation vs fiberglass insulation.
Home homeowners how spray foam saves money spray foam vs.
Quick comparisons and installation tips.
R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another.
Closed cell spray foam r values.
The closed cell spray foam stops air infiltration and provides about an r 5 per inch.
As a benchmark one inch of solid wood has an r value of 1.
Insulate rim joists and other large areas with this product meant for big jobs.
According to industry publication fine home building the r value for open cell spray foam is between r 3 5 r 3 6 per inch.
Made with plant based products such as soy eco spray foam is more eco friendly.
The cost of spray foam insulation vs fiberglass is higher if you choose closed cell foam.
For example closed cell spray foam depending on brand can offer an r 6 or r 7 per inch.
In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and.
Foam in place insulation can be blown into walls on attic surfaces or under floors to insulate and reduce air leakage.
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.
Homes generally try and reach an r value of 38 with their insulation.
Why spray foam insulation is so effective in meeting code requirements is that it has a higher r value per inch of product used than batts.
Traditional insulation comparison compare spray foam to traditional types of insulation icynene spray foam expands 100 times its original size to fills cracks and crevices stopping air leaks.
For 6 inches r 15 or r 19 etc.
For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3.
Focusing on spray foam insulation materials there is a difference between the two main types.
