Duct Insulation R Value Chart

Condensation control softr duct wrap helps control moisture condensation on the ductwork as well as on the outer vapor retarder jacket.

Duct insulation r value chart.

The united states department of energy defines thermal resistance also known as r value as the insulating material s resistance to conductive heat flow put more simply the r value measures the effectiveness of the insulation material. 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. This helps maintain insulation effi ciency and reduces the likelihood of stained. 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.

The table below shows what levels of insulation are cost effective for different climates and. 1 844 446 7858 my account. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and. R value is a measure of insulation s ability to resist heat traveling through it.

Glass fiber duct wrap see r value table. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. 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. As a benchmark one inch of solid wood has an r value of 1.

Insulation is also effective at reducing cooling bills. Operating costs are controlled due to reduction of heat loss or gain through duct walls. For most applications a rating of r 6 or better will provide the best efficiency and long term cost effectiveness. The higher the r value the more resistant a material or building assemblage is to conductive heat transfer.

What is an r value. The higher the r value the better the thermal performance of the insulation. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. Blanket duct wrap is applied separately from the actual ducting process whereas insulated flexible duct comes with the insulation already wrapped.

Both types of insulation are available in a variety of thicknesses and r ratings. Adapted from modera et al impacts of residential duct insulation on hvac energy use and life cycle cost to consumers ashrae transactions at 96 13 4. Insulation level are specified by r value. 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.

The common denominator among varieties of insulation is the r value. Thermal resistance r value definition.