R 38 Attic Insulation Depth

Owens corning r 38 ecotouch pink cathedral ceiling kraft faced fiberglass insulation batt 23 3 4 in.

R 38 attic insulation depth. R value is a measure of insulation s ability to resist heat flow. 8 bags model k91 view the owens corning attic insulation. R 38c ecotouch insulation width length thickness r value1 cathedral ceiling construction 15 394mm 23 603mm 48 1 219mm 10 260mm 38 0 1. Add the right kind of insulation.

R values like r 38 are used by the construction industry to describe the thermal resistance of insulation materials like those used to insulate your attic when you are looking at an r 38 insulation you are actually reading a description of its resistance rather than size or thickness of the material. The higher the r value the greater the insulating power. Insulation levels are specified by r value. Recommended home insulation r values.

Obtain a specific r value. Ask your owens corning representative for the fact sheet on r values. This calculator is to be used as an estimating tool only. To achieve r 38 you can use two layers of r.

The higher the r value the better the thermal performance of the insulation. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. R value does not depend on a single layer of insulation. Insulation level are specified by r value.

For example to install r 38 in an attic with 3200 square feet of area use the following formula. An insulation value of r 38 is at the high end and requires a minimum thickness of 12 inches. Input depth of existing blown in insulation in inches. The higher the r value the better the thermal performance of the insulation.

C insulation for cathedral ceiling applications. The table below shows what levels of insulation are cost effective for different climates and. If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs. 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.

3200 ft2 1000 3 2 19 2 bags per 1000 ft2 for r 38 x 3 2 61 4 bags building inspectors typically check the insulation depth to verify compliance with local codes. Click the button to calculate the approximate r value for this job.