Oklahoma Roof Insulation Requirements

Effective date of adoption.

Oklahoma roof insulation requirements.

The r value of thermal insulation depends on the type of material its thickness and its density. 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. Insulation is rated in terms of thermal resistance called r value which indicates the resistance to heat flow. The us department of energy estimates that up to 40 or more of your home s energy loss is due to air leakage.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. 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. Ok oklahoma oklahoma uniform building code 3 r 15.

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. All requirements of the state of oklahoma roofing program and the state of oklahoma roof warranty roofing system manufacturer s warranty rsmw 6. Adopted building codes. Insulation r value requirements for usa.

The higher the r value the better the thermal performance of the insulation. R value is a measure of insulation s ability to resist heat traveling through it. All recommendations of the national roofing contractor s association nrca 4. Modifications to the code.

Minimum insulation r value requirements non residential above roof deck. An r value tells you how well a type of insulation can keep heat from leaving or entering your home. Injection foam insulation stops air leakage. Injection foam insulation s higher r value.

Insulation ratings are measured in r values per inch of thickness. All recommendations of the national roofing contractors association nrca 4. Insulation level are specified by r value. Not less than a 1 air space shall be provided between the insulation and the roof sheathing.

The information contained in this document is meant to be used as a quick reference guide for insulation levels across the united states. Insulation r values vary based on the type thickness and density of the insulation material. The higher the r value the better the insulation. Sheet metal and air conditioning contractor s national association smacna 5.

Another major performance issue with insulation and energy savings is its air sealing capability. Existing buildings requirements are sprinkled throughout the i codes. Sheet metal and air conditioning contractor s national association smacna 5.