Recommended R Value For Attic In Texas

See the department of energy s doe ranges for recommended levels of insulation below.

Recommended r value for attic in texas.

Insulation level are specified by r value. The table below shows what levels of insulation are cost effective for different climates and locations in the home. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. 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.

The higher the r value the greater the insulation performance. What r value is best for my home. 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 higher the r value the better the thermal performance of the insulation.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Exterior walls if your exterior walls are constructed from 2 by 4 inch studs the most insulation that can go into the wall while retaining its r value is r 13 or r 15 as these are both made to fit a cavity 3 1 2 inches deep. For bigger jobs such as roof attic floor and wall insulation you will need professional help and equipment. Insulate the garage s ceiling by using the recommended r value for your area as advised by the department of energy s oak ridge laboratory.

Blown fiberglass installed in the attic 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. This helps reduce heating and cooling costs by making it easier to keep a consistent interior temperature during the extreme weather and hot temperatures that we experience in north texas. 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. 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.

When determining how much insulation you need don t guesstimate calculate. In order to maximize the insulating potential for most residential attics an r 60 is recommended. Inspecting your attic insulation. Insulation professionals will be able to tell you how much insulation you need based on.

Diyers can use this foam for small jobs such as insulating door frames. R value measures how well certain building insulation materials can resist heat. R value is a measure of insulation s ability to resist heat traveling through it. Know exactly how much you need with our project calculators.