Duct Insulation R Value Chart

The higher the r value the more resistant a material or building assemblage is to conductive heat transfer.

Duct insulation r value chart.

Recommended home insulation r values. 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 better the thermal performance of the insulation. 1 844 446 7858 my account.

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. This helps maintain insulation effi ciency and reduces the likelihood of stained. For example if you have a type of insulation. Thermal resistance r value definition.

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. Insulation level are specified by r value. What is an r value.

As a benchmark one inch of solid wood has an r value of 1. Operating costs are controlled due to reduction of heat loss or gain through duct walls. 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.

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. R value is a measure of insulation s ability to resist heat traveling through it. 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.

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. Condensation control softr duct wrap helps control moisture condensation on the ductwork as well as on the outer vapor retarder jacket. 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. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and.