Oklahoma Roof Insulation Requirements

Another major performance issue with insulation and energy savings is its air sealing capability.

Oklahoma roof insulation requirements.

The higher the r value the greater the insulating effectiveness. The us department of energy estimates that up to 40 or more of your home s energy loss is due to air leakage. Minimum insulation r value requirements non residential above roof deck. Insulation level are specified by r value.

Existing buildings requirements are sprinkled throughout the i codes. The higher the r value the better the thermal performance of the insulation. An r value tells you how well a type of insulation can keep heat from leaving or entering your home. Modifications to the code.

State applicable energy ashrae zone minimum r value state. Injection foam insulation stops air leakage. 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 s higher r value.

Insulation ratings are measured in r values per inch of thickness. Ok oklahoma oklahoma uniform building code 3 r 15. The r value of thermal insulation depends on the type of material its thickness and its density. Effective date of adoption.

Insulation r values vary based on the type thickness and density of the insulation material. Sheet metal and air conditioning contractor s national association smacna 5. Adopted building codes. International residential code 2015 edition irc 2015.

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. All recommendations of the national roofing contractor s association nrca 4. 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 higher the r value the better the insulation. The table below shows what levels of insulation are cost effective for different climates and locations in the home. Sheet metal and air conditioning contractor s national association smacna 5. 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. For roofing replacements it is necessary to look at the ibc. Insulation r value requirements for usa.