Input depth of existing blown in insulation in inches.
R 38 attic insulation depth.
The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.
R value is a measure of insulation s ability to resist heat flow.
Obtain a specific r value.
Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter.
For example to install r 38 in an attic with 3200 square feet of area use the following formula.
The higher the r value the better the thermal performance of the insulation.
C insulation for cathedral ceiling applications.
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.
Ask your owens corning representative for the fact sheet on r values.
Click the button to calculate the approximate r value for this job.
Recommended home insulation r values.
The higher the r value the better the thermal performance of the insulation.
The higher the r value the greater the insulating power.
8 bags model k91 view the owens corning attic 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.
Insulation levels are specified by r value.
For loose fill cellulose this translates to a total depth ranging from 8 inches.
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.
In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended.
Add the right kind of insulation.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
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.
Insulation level are specified by r value.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
