The depth varies quite a bit because we have attic trusses and a floor in the attic.
R36 attic insulation.
Cellulose insulation has an r value of approximately 3 to 3 5 per inch.
Attic existing 3 4 inches of insulation uninsulated floor uninsulated wood frame wall insulated wood frame wall 1 r30 to r49 r25 to r30 r13 2 r30 to r60 r25 to r38 r13 to r19 n a 3 r30 to r60 r25 to r38 r19 to r25 and add r5 insulative wall sheathing beneath the new siding.
Insulation level are specified by r value.
Insulation decreases the amount of heat entering from outside when it s hot and traps warmth inside when it s cold.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
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.
Its expert engineering lets you create the most comfortable environment without compromising your design.
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Insulation our building science makes insulation br smarter.
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.
Most homes are insulated in the attic and any floors located above unfinished basements or crawl spaces.