What are Insulated Metal Panels?
Insulated metal panels (IMPs) consist of two single-skin metal panels and a special foam insulation place
between the two single-skin panels to provide superior R-values for greater thermal efficiency. R-values are
used to describe the insulation properties; they are a measure of apparent thermal conductivity and describe
the rate that heat energy is transferred through materials. More specifically, it is the measure of the ability to
impede heat flow rather than to transmit heat. A higher R-value is better. Other thermal values measured in
IMPs include K-factor and U-value. K-factor, or thermal conductivity, is the measure of a material’s ability to
transfer heat. A lower K-factor is better. U-value is a measure of how much heat is conducted through the
material. A lower U-value is better. U is equal to 1/R. For example, a material with a U-value of 0.25 has an Rfactor
of 1, divided by 0.25, which is equal to an R-value of 4.
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