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Home | Tag Archives: R-value

Tag Archives: R-value

Fundamentals Of Open- And Closed-Cell Foam

By Robert Naini In the world of spray foam, there are two categories of products: open-cell and closed-cell foam. Open-cell and closed-cell spray foam insulation products are regularly used on many different types of projects in commercial, residential, industrial applications, and on various substrates such as wood, metal, and concrete. OPEN-CELL SPRAY FOAM Open-cell spray foam is referred to as ...

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R-Value Is Not The Whole Story

By Robert Naini The insulation you use does not have a higher “effective R-value” than its tested R-value, stop saying that it does. R-value is R-value; it is derived and documented based on a tested value, K-factor, and does not magically have a higher resistance than the value listed on its technical data sheet just because you think it is ...

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The Value of R-Value: Discussing the Limitations of the Well-Known Insulation Metric

Most know R-value as a simple rating system for building insulation products, but what exactly is an R-Value? (see sidebar) This is a great question, and one that is not asked often enough in today’s environmentally conscious society. However, an even better question is whether R-value is still a valid unit of measurement for the performance of insulation products. If ...

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