Insulation Grade For Attic

Insulation level are specified by r value.

Insulation grade for attic.

Insulation is rated by its r value. The ideal attic insulation r value is different than the ideal wall insulation r value. The higher the r value the better the thermal performance of the insulation. The amount of insulation recommended for your home is dependent on where you live but here are some general guidelines.

Warmer climates only require an r 38 or higher or about 12 or more. A grade i designation means that the home insulation is properly installed and without any moderate or substantial defects. R value measures how resistant types of insulation are to heat flow. Achieving greater r values in attics.

Providing a grade i installation is important to delivering a quality energy efficient home. Insulation decreases the amount of heat entering from outside when it s hot and traps warmth inside when it s cold. 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. We re proud to say our products can be found in some of the tallest and safest buildings around the globe like salesforce tower.

With a minimum of 70 recycled content the installed thermafiber products contributed to valuable leed credits helping the building earn a leed platinum certification. The table below shows what levels of insulation are cost effective for different climates and locations in the home. Houses in a cold climate should have a minimum of r 49 in the attic which is equivalent to approximately 16 of fiberglass insulation. With r value the higher the value the better of an.

Case study salesforce tower. Make sure your home is properly insulated in all these locations. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. R value is a measure of insulation s ability to resist heat traveling through it.

While grade i installation should be the norm in the residential building industry there are instances where it is not. How much is enough. Insulation ratings can be improved by adding more layers of insulation. Inspecting your attic insulation.

Occasional very small gaps are acceptable in another place the standards say if the exterior sheathing is visible from the building interior through gaps in the cavity insulation material it is not considered a grade i installation grade ii. The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home. You can mix the type and material of insulation too. Up to 2 missing insulation.

Attic roof insulation is as much of an art as it is a science so we will start with the basics and work our way up. Between 2 and 5 missing insulation.