Oklahoma Roof Insulation Requirements

The information contained in this document is meant to be used as a quick reference guide for insulation levels across the united states.

Oklahoma roof insulation requirements.

Minimum insulation r value requirements non residential above roof deck. Sheet metal and air conditioning contractor s national association smacna 5. All requirements of the state of oklahoma roofing program and the state of oklahoma roof warranty roofing system manufacturer s warranty rsmw 6. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

Insulation level are specified by r value. State applicable energy ashrae zone minimum r value state. Injection foam insulation s higher r value. Oklahoma 2015 energy code compliance guide this is intended to guide the building industry to greater compliance with the prescriptive energy code requirements in chapter 11 of the 2015 irc as amended by the oubcc ok 2015 irc.

Injection foam insulation stops air leakage. The higher the r value the better the thermal performance of the insulation. The us department of energy estimates that up to 40 or more of your home s energy loss is due to air leakage. For roofing replacements it is necessary to look at the ibc.

Insulation r values vary based on the type thickness and density of the insulation material. Not less than a 1 air space shall be provided between the insulation and the roof sheathing. Ok oklahoma oklahoma uniform building code 3 r 15. Insulation r value requirements for usa.

The r value of thermal insulation depends on the type of material its thickness and its density. Adopted building codes. All recommendations of the national roofing contractors association nrca 4. Another major performance issue with insulation and energy savings is its air sealing capability.

Sheet metal and air conditioning contractor s national association smacna 5. Insulation ratings are measured in r values per inch of thickness. Insulation is rated in terms of thermal resistance called r value which indicates the resistance to heat flow. R value is a measure of insulation s ability to resist heat traveling through it.

Existing buildings requirements are sprinkled throughout the i codes. All recommendations of the national roofing contractor s association nrca 4. The higher the r value the greater the insulating effectiveness. All requirements of the state of oklahoma roofing program and the state of oklahoma roof warranty roofing system manufacturer s warranty rsmw 6.

Effective date of adoption. An r value tells you how well a type of insulation can keep heat from leaving or entering your home. Modifications to the code.