NV C-1C Pipe And Duct Insulation Practice Questions - Nevada C-1C Pipe And Duct Insulation Contractor Examination Exam

What does the R-value of pipe or duct insulation measure?

Thermal resistance to heat flow Flame-spread index under ASTM E84 Compressive strength in pounds per square inch Water-vapor permeance

Correct Answer:

Thermal resistance to heat flow

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