In the world of home insulation, R-values are crucial. R-values measure the insulation’s thermal resistance and are therefore a key indicator of its energy efficiency. As with any industry-specific lingo, it’s easy to get lost in the weeds of insulation terminology, but understanding R-values will help you make a smart decision for your home.
Here’s what to know about insulation R-values:
- R-values measure energy efficiency. Specifically, R-values measure the heat transfer resistance of a material, meaning how well it prevents heat from entering or escaping a space. The more resistant it is, the more climate control it provides. So, a higher R-value means the insulation has a higher thermal transfer resistance, which translates into higher energy efficiency.
- Different areas of your house need different R-values. Generally, an attic will use the highest insulation R-values, and the walls use the smallest. In Florida, the floors use around the same R-value as the walls.
- R-value effectiveness is dependent upon many factors. Just because insulation has a high R-value doesn’t necessarily mean it will translate into a more efficient home. This is where local expert insulation contractors come in. It’s important to understand how the local climate, insulation materials, and installation all affect the actual performance of the insulation in your specific home.
- R-values can be combined for better insulation. Upgrading your insulation will often involve adding to your existing insulation. Depending on your home’s current insulation R-values, you may not need to add high R-values to improve your home’s temperature control and energy efficiency. It’s always best to get a professional assessment to determine the right R-values for your home.