Understanding Polyisocyanurate Insulation and Its R-Value
Polyisocyanurate, often shortened to polyiso, is a type of rigid foam insulation. It’s a closed-cell, thermoset plastic, used to prevent heat transfer.
To understand how effective polyiso is, we need to talk about R-value. R-value measures how well an insulation material resists heat flow. A higher R-value means better insulation performance, because it means less heat can transfer through it.
Understanding the R-value of polyisocyanurate is crucial for energy efficiency and overall building performance. Good insulation helps keep conditioned air inside, slowing down the transfer of heat. This article will cover what R-value means, how it’s tested, how it’s affected by temperature, and other practical considerations.