Residential Roof Insulation R Value

Insulation level are specified by r value.

Residential roof insulation r value.

Minimum insulation r value requirements non residential above roof deck. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. Non residential above roof deck this matrix provides the minimum insulation r values required by local and state municipalities. The table below shows what levels of insulation are cost effective for different climates and.

The higher the r value the better the thermal performance of the insulation. When determining how much insulation you need don t guesstimate calculate. 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. Know exactly how much you need with our project calculators.

The document was updated in 2020 and is available on the carlisle syntec website. R value is a measure of insulation s ability to resist heat traveling through it. Minimum insulation r value requirements non residential above roof deck is an extremely handy table for state and local jurisdictions in the united states. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.

These products provide a high r value inch excellent sound attenuation characteristics and outstanding fire performance. 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. You will need a higher r value of insulation if you live in the northeast than if you live in southern california.

The higher the r value the greater the insulation performance. There are many ways to retrofit a home with fiberglass and. 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. Recommended home insulation r values.

Thermafiber residential mineral wool insulation commercial grade at home thermafiber residential mineral wool blankets are ideal for insulating walls floor ceilings and attic spaces in homes. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems.