Oklahoma Roof Insulation Requirements

State applicable energy ashrae zone minimum r value state.

Oklahoma roof insulation requirements.

Insulation r value requirements for usa. For roofing replacements it is necessary to look at the ibc. Adopted building codes. Modifications to the code.

Insulation ratings are measured in r values per inch of thickness. Not less than a 1 air space shall be provided between the insulation and the roof sheathing. 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.

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. The higher the r value the better the thermal performance of the insulation. Effective date of adoption. Injection foam insulation stops air leakage.

The higher the r value the better the insulation. Another major performance issue with insulation and energy savings is its air sealing capability. Minimum insulation r value requirements non residential above roof deck. All recommendations of the national roofing contractor s association nrca 4.

Sheet metal and air conditioning contractor s national association smacna 5. Sheet metal and air conditioning contractor s national association smacna 5. Insulation r values vary based on the type thickness and density of the insulation material. An r value tells you how well a type of insulation can keep heat from leaving or entering your home.

R value is a measure of insulation s ability to resist heat traveling through it. All recommendations of the national roofing contractors association nrca 4. Ok oklahoma oklahoma uniform building code 3 r 15. All requirements of the state of oklahoma roofing program and the state of oklahoma roof warranty roofing system manufacturer s warranty rsmw 6.

The higher the r value the greater the insulating effectiveness. Existing buildings requirements are sprinkled throughout the i codes. Roof replacements shall comply with section c402 1 3 c402 1 4 c402 1 5 or c407 where the existing roof assembly is part of the building thermal envelope and contains insulation entirely above the roof deck. The us department of energy estimates that up to 40 or more of your home s energy loss is due to air leakage.

The information contained in this document is meant to be used as a quick reference guide for insulation levels across the united states. Injection foam insulation s higher r value. International residential code 2015 edition irc 2015.