Tag Archives: FTC

R-values: Controversy and performance values

By Ken Wells

Insulated floors, walls, and ceilings resulting in the highest percentage of air infiltration—which greatly affects R-value—it is imperative these areas have an accurate gauge of performance.  Image © www.energydetectivetn.com

Insulated floors, walls, and ceilings resulting in the highest percentage of air infiltration—which greatly affects R-value—it is imperative these areas have an accurate gauge of performance.
Image © www.energydetectivetn.com

What exactly is R-value? This question is not asked often enough in today’s environmentally conscious design/construction industry. However, an even better question may be, whether R-value is still a valid unit of measurement for the performance of insulation products. (And, if not, why is it being used as the predominate gauge to compare them.) To answer these questions, this two-part series discusses how R-value came to be and how it is used.1 Continue reading