Wall insulation whenever exterior siding is removed on an.
Minimum insulation for walls.
Framed wall insulation must meet or exceed r 13.
Add r5 insulative wall sheathing beneath the new siding.
See the department of energy s doe ranges for recommended levels of insulation below.
Add r5 to r6 insulative wall sheathing beneath the new.
For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6.
Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and.
Residential requirements for insulation are divided by the location in the home.
The r value your insulation needs depends on your local climate.
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.
Once you find your home s zone on this map you can use the below insulation r value chart to determine the minimum r value your insulation should have.
Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13.
The map above shows each region of the u s.
And the department of energy s corresponding climate zone.
Minimum requirements r values identify insulation levels.
R values can be higher for foam insulation and other advanced insulation systems.