Insulation Value For Attic Required In Texas

The higher the r value the better the thermal performance of the insulation.

Insulation value for attic required in texas. Insulation level are specified by r value. Recommended home insulation r values. Measure your attic s square footage. Insulation ratings can be improved by adding more layers of insulation.

Residents of southern and central texas should insulate their attics to at least r 30 or about 9 5 inches of conventional fiberglass batt insulation. The ideal attic insulation r value is different than the ideal wall insulation r value. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. Special insulation exceptions related to ceilings with attic spaces ceilings without attic spaces masonry veneer and thermally isolated sunrooms are set forth in iecc section.

Uninsulated attic spaces are responsible for significant heat loss since heat rises in a building. If you live in the texas panhandle consider increasing your insulation level to at least r 38. Yes generally a higher r value means a more effective insulator but the highest r value possible may not be necessarily right for your project. Each bag lists the required depths for a range of r values and the number of bags needed to cover 1 000 square feet at those depths.

You can mix the type and material of insulation too. The table below shows what levels of insulation are cost effective for different climates and. Dallas texas falls in climate zone three where attics are recommended to have an r value between 38 49 this means a minimum of 12 of insulation. For diy attic insulation you ve got two choices.

For batts or rolls calculate. For loose fill read labels. The open cell polyurethane foam has an r value of 3 5 to 3 6 per inch with a price tag of 1 1 20 square foot. R value is a measure of insulation s ability to resist heat traveling through it.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Make sure your home is properly insulated in all these locations. What r value is best for my home. Loose fill or batt the common term for blanket insulation.

Blown fiberglass attic insulation has an r value of 2 2 per inch so 12 inches of it would give you an r value of 26 4 in your attic installation project. The required slab edge r values for heated slabs. For bigger jobs such as roof attic floor and wall insulation you will need professional help and equipment. Insulation depth shall be the depth of the footing or 2 feet whichever is less in climate zones 2 3 for heated slabs.