Blown Insulation In Attic R Value

Recommended home insulation r values.

Blown insulation in attic r value.

There are many ways to retrofit a home with fiberglass and. As a benchmark one inch of solid wood has an r value of 1. R values of common types of insulation. R value measures how well certain building insulation materials can resist heat.

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. The higher the r value the greater the insulation performance. Input length width and desired r value of the area to be insulated. The higher the r value the better the thermal performance of the insulation.

The r value of the insulation for every inch of thickness depends on the type of insulation. R value is a measure of insulation s ability to resist heat traveling through it. This calculator is to be used as an estimating tool only. The two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting.

Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. The recommended r value for attic insulation in ontario is between r 50 and r 60. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and an inch of blown cellulose in an attic has an r value of 3 2 3 7.

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. Click the button to calculate the depth in inches and pounds of total insulation required for this job. Know exactly how much you need with our project calculators. Input depth of existing blown in insulation in inches.

Cellulose insulation has an average thermal value of r 3 7 so you d need just over five inches to equal an r 19 batt. Your home s age if your home is more than 10 year old you likely need more insulation. A bag of cellulose runs about 11 50 and will cover 36 7 square feet at a. The table below shows what levels of insulation are cost effective for different climates and.

Where you live different climates require different insulation r values. Click the button to calculate the depth in inches and pounds of total insulation required for this job. Insulation level are specified by r value. This calculator is to be used as an estimating tool only.

Input length width and desired r value of the area to be insulated.