What Is R19 Insulation

A wall is R-19, a roof is R-30 — what does this mean? Essentially R-value is a measure of thermal resistance, or the ability to prevent the transfer of heat

What is R-19 insulation used for?

Both R-19 and R-21 insulation are commonly used to insulate walls of homes framed with 2-by-6 lumber, and each are recommended by U.S. Department of Energy to efficiently insulate new construction.

Which is better R13 or R19 insulation?

Inside your home, the warmer air is higher pressure air, and wants to move, or transfer to lower pressure, cooler air outside. Insulation in your walls and ceilings slows down this heat transfer. … So R19 is better insulation than R13, and R30 is better than R19. The larger the R value, the better the insulation value.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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