Duct Insulation R Value Chart

Thermal resistance r value definition.

Duct insulation r value chart.

An r value is an assigned number derived from a specific testing procedure or calculation to determine a materials or building assemblage resistance to conductive heat transfer. A material with a higher r value is a better insulator. Gas oil r 6 to r 11 r 2 to r 11 heat pump or electric resistance r 6 to r 11 r 2 to r 11 a. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another.

Operating costs are controlled due to reduction of heat loss or gain through duct walls. Both types of insulation are available in a variety of thicknesses and r ratings. Condensation control softr duct wrap helps control moisture condensation on the ductwork as well as on the outer vapor retarder jacket. Recommended home insulation r values.

The higher the r value the more resistant a material or building assemblage is to conductive heat transfer. For example if you have a type of insulation. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

Insulation is also effective at reducing cooling bills. Our r value guide to rigid insulation includes the doe s recommended insulation by zone chart r value calculator and base building material r values chart. For most applications a rating of r 6 or better will provide the best efficiency and long term cost effectiveness. Insulation level are specified by r value.

What is an r value. 1 844 446 7858 my account. R value is a measure of insulation s ability to resist heat traveling through it. The common denominator among varieties of insulation is the r value.

Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Blanket duct wrap is applied separately from the actual ducting process whereas insulated flexible duct comes with the insulation already wrapped. The table below shows what levels of insulation are cost effective for different climates and. Glass fiber duct wrap see r value table.

This helps maintain insulation effi ciency and reduces the likelihood of stained. As a benchmark one inch of solid wood has an r value of 1.