Attic Insulation R Value Michigan

Your home s age if your home is more than 10 year old you likely need more insulation.

Attic insulation r value michigan.

The best attic insulation always depends on the way it s applied. Thermally isolated sunroom insulation. Insulation requirements for slab on grade floors is further specified in iecc section 402 2 8. R value is a measure of insulation s ability to resist heat traveling through it.

The higher the r value the better the thermal performance of the insulation. The minimum ceiling insulation r values shall be r 24 in zones 5 to 7. Rule 1063a section r402 2 12 of the code is amended to read as follows. New wall or walls separating a.

Achieving greater r values in exterior walls. The minimum wall r value shall be r 13 in all zones. Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. There s fiberglass and cellulose which are close in r value.

The higher the r value the better the thermal performance of the insulation. The r in r value stands for resistance. Table n1102 1 1 r402 1 1 insulation and fenestration table amendments ceilings. The table below shows what levels of insulation are cost effective for different climates and.

Insulation r value requirements for michigan what is r value. Recommended home insulation r values. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. R 408 31063a specific insulation requirements prescriptive.

Resistance to the movement in temperature through walls ceilings and floors in your home or commercial building. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. R 5 shall be added to the required slab edge r values for heated slabs. Climate zone 6 and 7 r20 or r13 5 instead of r20 or r13 10 and first value is cavity insulation second is continuous insulation or insulated siding so 13 5 means r 13 cavity insulation plus r.

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. The attic insulation and air seal will pay for itself many times over. You first have to ask yourself what do i want to do with my attic space. Where you live different climates require different insulation r values.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. Climate zone 5 r38 instead of r49 wood framed walls. Insulation level are specified by r value. There are many ways to retrofit a home with fiberglass and.