Colorado Attic Insulation R Value

To obtain a wall or ceiling assembly r value you must add the r values of the individual components together. Special insulation exceptions related to ceilings with attic spaces ceilings without attic spaces masonry veneer and thermally isolated sunrooms are set forth in iecc. For example r 49 would equal 17 inches of insulation.

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There are many ways to retrofit a home with fiberglass and.

Colorado attic insulation r value.

Where you live different climates require different insulation r values. Your home s age if your home is more than 10 year old you likely need more insulation. In the coldest climates insulating up to r 49 is recommended. You can achieve better thermal performance in your attic by adding an additional layer of insulation.

The recommended insulation level for most attics is r 38 or about 12 15 inches depending on the insulation type. R value is the resistance to heat and cold. Achieving greater r values in exterior walls. Recommended insulation levels for retrofitting existing wood framed buildings.

For example if an attic has 10 inches of fiberglass batt insulation. R value per inch x number of inches total r value 3 2 x 10 r 32. R value table insulation values for selected materials. The depth of your insulation will equate to a relative r value.

The higher the r value the better the thermal performance of the insulation. Once you identify the type of insulation you have in a certain location and measure the depth of that insulation in inches you can figure out the total r value of that insulation. Existing 3 4 inches of insulation. Use the r value table below to help you determine the r value of your wall or ceiling assemblies.

Rock wool blown wall 3 10 4 00. Copyright privacy accessibility sitemap dmca policy colorado springs utilities. 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 throughout homes with electric heat is r 49 in your attic r 22 in your walls r 19 in your basement and r 25 in your floors.

R 5 shall be added to the required slab edge r values for heated slabs. R 5 shall be added to the required slab edge r values for heated slabs. Insulation requirements for slab on grade floors is further specified in iecc section 402 2 8. Add insulation to attic.

Rock wool blown attic 3 10 4 00. Insulation requirements for slab on grade floors are further specified in iecc section r402 2 9. Special insulation exceptions related to ceilings with attic spaces ceilings without attic spaces masonry veneer and. Because of the temperature fluctuations throughout the year colorado homes require a higher insulation r value than cities with more moderate climates like san diego or phoenix.

The government recommends a minimum r value of 49 throughout all of colorado.