Blow In Attic Insulation R Value

The specially designed atticat machine conditions the insulation by adding millions of tiny air pockets that give the material its insulating power and energy saving r value over time.

Blow in attic insulation r value.

Your home s age if your home is more than 10 year old you likely need more insulation. The r value of loose fill cellulose is r 3 2 to 3 8 per inch2. R value is a measure of insulation s ability to resist heat traveling through it. You will need a higher r value of insulation if you live in the northeast than if you live in southern california.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. There are many ways to retrofit a home with fiberglass and. For example a wall with 3 fiberglass batting r value of 10 8 11 9 may have an overall r value of nearly 14 because of siding sheathing and drywall. Click the button to calculate the depth in inches and pounds of total insulation required for this job.

Recommended home insulation r values. This is because it achieves nominal r value when it fills in the cavities which include the hard to reach in areas voids and gaps. However it s hard to see a home that has batt insulation that doesn t fall short. Where you live different climates require different insulation r values.

So that it can be installed with an insulation blowing machine. Fiber glass insulation typically contains 20 to 30 recycled glass1. This calculator is to be used as an estimating tool only. When blown into attics and wall spaces loose fill fiberglass offers an average r 2 5 thermal value per inch the higher the number the greater the insulating effect.

Loose fill fiberglass has an r value of r 2 2 to 2 7 per inch3. Blown in insulation makes it easy to earn a higher grade rating when it comes to r values. This calculator is to be used as an estimating tool only. Achieving the desired r value depends on both the depth of the insulation and its density.

Input depth of existing blown in insulation in inches. The higher the r value the better the thermal performance of the insulation. Insulation level are specified by r value. Blowing the insulation should take less than 1 5 hours and the whole job can be completed in less than 4 hours based on a 1 000 sq.

Input length width and desired r value of the area to be insulated. As a benchmark one inch of solid wood has an r value of 1. You d need a thickness of. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system.

The table below shows what levels of insulation are cost effective for different climates and. The higher the r value the better the thermal performance of the insulation.