R Value For Attic Ceiling

Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.

R value for attic ceiling.

R values help homeowners decide which type of insulation material to use and in what thickness. The higher the r value the better the thermal performance of the insulation. Recommended home insulation r values. R value is a measure of insulation s ability to resist heat traveling through it.

Insulate the garage s ceiling by using the recommended r value for your area as advised by the department of energy s oak ridge laboratory. Many sites stress the importance of a high r value to save energy. Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. Exterior walls if your exterior walls are constructed from 2 by 4 inch studs the most insulation that can go into the wall while retaining its r value is r 13 or r 15 as these are both made to fit a cavity 3 1 2 inches deep.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. Achieving greater r values in exterior walls. The higher the r value the better the thermal performance of the insulation. Insulation level are specified by r value.

But that seems only part of the equation if i look at the recommended r values. R value which represents resistance is the standard measure of insulation effectiveness. You should have a minimum of r 30 if possible and in colder climates even more. The fact that floor and ceiling attic have higher insulation recommendation than walls shows those area s leak much more energy.

Department of energy recommendations for attic ceiling r values based. More insulation saves energy. The higher the r value the better the insulation resists the flow of heat.