Department Of Energy Attic Insulation

Loose fill insulation must be applied using an insulation blowing machine in either open blow applications such as attic spaces or closed cavity applications such as those found inside existing walls or covered attic floors.

Department of energy attic insulation.

Bulky materials resist conductive and to a lesser degree convective heat flow in a building cavity. Types of insulation insulation comes in many different. Insulation is literally built into the home s walls creating high thermal resistance. A qualified home energy auditor will include an insulation check as a routine part of a whole house energy assessment.

Most manufacturers use 40 to 60 recycled glass content. Rigid foam boards trap air or another gas to resist conductive heat flow. Insulation level are specified by r value. Blown into place using special equipment sometimes poured in.

Enclosed existing wall or open new wall cavities. R value is a measure of insulation s ability to resist heat traveling through it. Learn more about where to insulate. An energy assessment also known as a home energy audit will also help identify areas of your home that are in need of air sealing.

Mineral rock or slag wool. Insulation materials run the gamut from bulky fiber materials such as fiberglass rock and slag wool cellulose and natural fibers to rigid foam boards to sleek foils. In unfinished attic spaces insulate between and over the floor joists to seal off living spaces below. The higher the r value the better the thermal performance of the insulation.

Before you insulate you should make sure that your home is properly air sealed. If the air distribution is in the attic space then consider insulating the rafters to move the distribution into the conditioned space.