Oklahoma Roof Insulation Requirements

Injection foam insulation s higher r value.

Oklahoma roof insulation requirements.

Insulation ratings are measured in r values per inch of thickness. Effective date of adoption. All recommendations of the national roofing contractor s association nrca 4. R value is a measure of insulation s ability to resist heat traveling through it.

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. 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 information contained in this document is meant to be used as a quick reference guide for insulation levels across the united states.

An r value tells you how well a type of insulation can keep heat from leaving or entering your home. Modifications to the code. The table below shows what levels of insulation are cost effective for different climates and locations in the home. International residential code 2015 edition irc 2015.

For roofing replacements it is necessary to look at the ibc. 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. 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. State applicable energy ashrae zone minimum r value state. Injection foam insulation stops air leakage. 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. The higher the r value the better the insulation. Not less than a 1 air space shall be provided between the insulation and the roof sheathing. Adopted building codes.

Insulation is rated in terms of thermal resistance called r value which indicates the resistance to heat flow. Insulation level are specified by r value. Existing buildings requirements are sprinkled throughout the i codes. Another major performance issue with insulation and energy savings is its air sealing capability.

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. Sheet metal and air conditioning contractor s national association smacna 5.