What is R-value for a Commercial Roof?

commercial roof

R-value is the representation of a material’s resistance to the flow of heat. Higher resistance equals higher R-value, and lower equals lower resistance to heat. When it comes to the R-value of a commercial roof, there are a few factors that you should be aware of. In this article, we will discuss how R-value is calculated and why R-value matters.

How R-value is Measured

1. R-value is the unit of measurement for heat resistance, but keep in mind that it is not just the commercial roof alone that accounts for your roofs R-value. R-value is an additive calculation. What this means is that all materials present have their R-values added together. In this case, your commercial roof has a cumulative R-value that is accounted for. Which means that the various materials used to construct your roof each have their own R-value and it is those values added together that make your roofs final R-value. 

R-value Affects Utility Bills

2. The reason why a commercial roofs ability to resist the flow of heat is important is that it will directly impact the buildings energy bill. It can be pretty significant when it comes to larger structures that require that certain temperatures being maintained within them.  

US Department of Energy

3. Lastly, the US Department of Energy requires your commercial building to have a specific R-value depending on what zone you are in. Not doing so can land you in hot water with the government and possibly result in issues with your property insurance carrier. These codes are supposed to be in place to protect you.

Are you curious about the R-value of your commercial roof? Call Arc Contracting today at 888-743-8086 if you are interested in learning more about the R-value of your commercial roof. We proudly service the Madison, Appleton, Green Bay, and Oshkosh areas.