Calculating Attic Insulation R Value

Input depth of existing blown in insulation in inches.

Calculating attic insulation r value.

This calculator is to be used as an estimating tool only. The table below shows what levels of insulation are cost effective for different climates and. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. As a benchmark one inch of solid wood has an r value of 1.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Know exactly how much you need with our project calculators. R value measures how well certain building insulation materials can resist heat. Ceiling insulation r value r value for walls and more.

Here are the r values per inch of the most common types of insulation. Input length width and desired r value of the area to be insulated. The higher the r value the greater the insulation performance. 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.

Insulation level are specified by r value. R value is a measurement that rates how resistant a product is to heat flow measuring the ability of heat to transfer from one side of an object to another. This calculator is to be used as an estimating tool only. Click the button to calculate the approximate r value for this job.

Our calculator helps you measure what r value for exterior walls you may be looking for as well as for different applications. The square footage of the area. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. To determine the r value of the insulation in your attic you need to know the r value of the type of insulation in your home and the thickness of the insulation.

The cost of one bag. Recommended home insulation r values. Click the button to calculate the depth in inches and pounds of total insulation required for this job. When determining how much insulation you need don t guesstimate calculate.

The higher the r value the better the thermal performance of the insulation. An r value is a measure of a given material s. The length of the area feet inches the width of the area feet inches the coverage of one bag cubic feet the r value per one inch of thickness of the insulation settled the desired r value. R value is a measure of insulation s ability to resist heat traveling through it.

Applied depth of insulation the height of placing the insulation. R value of insulation by type.