Oklahoma Roof Insulation Requirements

For roofing replacements it is necessary to look at the ibc.

Oklahoma roof insulation requirements.

State applicable energy ashrae zone minimum r value state. Another major performance issue with insulation and energy savings is its air sealing capability. R value is a measure of insulation s ability to resist heat traveling through it. Not less than a 1 air space shall be provided between the insulation and the roof sheathing.

An r value tells you how well a type of insulation can keep heat from leaving or entering your home. All recommendations of the national roofing contractors association nrca 4. The higher the r value the better the insulation. The r value of thermal insulation depends on the type of material its thickness and its density.

Insulation ratings are measured in r values per inch of thickness. Minimum insulation r value requirements non residential above roof deck. The information contained in this document is meant to be used as a quick reference guide for insulation levels across the united states. Existing buildings requirements are sprinkled throughout the i codes.

The us department of energy estimates that up to 40 or more of your home s energy loss is due to air leakage. 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. Ok oklahoma oklahoma uniform building code 3 r 15. International residential code 2015 edition irc 2015.

Insulation level are specified by r value. The higher the r value the better the thermal performance of the insulation. Sheet metal and air conditioning contractor s national association smacna 5. Insulation r value requirements for usa.

Insulation r values vary based on the type thickness and density of the insulation material. The higher the r value the greater the insulating effectiveness. Modifications to the code. All requirements of the state of oklahoma roofing program and the state of oklahoma roof warranty roofing system manufacturer s warranty rsmw 6.

Injection foam insulation stops air leakage. All recommendations of the national roofing contractor s association nrca 4. Adopted building codes. 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. Injection foam insulation s higher r value. Insulation is rated in terms of thermal resistance called r value which indicates the resistance to heat flow.