Oklahoma Roof Insulation Requirements

Insulation ratings are measured in r values per inch of thickness.

Oklahoma roof insulation requirements.

The higher the r value the greater the insulating effectiveness. Ok oklahoma oklahoma uniform building code 3 r 15. All recommendations of the national roofing contractors association nrca 4. Not less than a 1 air space shall be provided between the insulation and the roof sheathing.

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. Insulation is rated in terms of thermal resistance called r value which indicates the resistance to heat flow. The higher the r value the better the thermal performance of the insulation.

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. For roofing replacements it is necessary to look at the ibc. 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. Existing buildings requirements are sprinkled throughout the i codes. Modifications to the code. International residential code 2015 edition irc 2015.

R value is a measure of insulation s ability to resist heat traveling through it. Injection foam insulation s higher r value. 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 recommendations of the national roofing contractor s association nrca 4.

State applicable energy ashrae zone minimum r value state. 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. Adopted building codes.

Insulation r value requirements for usa. 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 stops air leakage.

Minimum insulation r value requirements non residential above 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. Sheet metal and air conditioning contractor s national association smacna 5.