When we talk about insulation, we talk about R-Value. But what does this actually mean? Keep reading to find out, so that you can choose your insulation with confidence.

What does R-Value mean?

R-Value is a measurement of the capacity of an insulating material to resist heat flow. In other words, the higher the R-Value, the better your insulation is at doing its job.

R-Value measures the ability to stop heat transfer through conduction. For example, if the temperature of your home is 20 degrees, and the temperature outside is 0 degrees, how effective is your insulation at keeping the hot air in and the cold air out? R-Value tells you just that.

It is also helpful to note that R-Value is the industry term that is used most frequently. Sometimes, however, this is also referred to as the ‘thermal resistance’ of a unit area.

How do I know what a good R-Value is?

The New Zealand Building Code has different minimum R-Values for each region and for each part of your home.

For example, if you’re based in the Bay of Plenty, the minimum R-Value is slightly lower than what it is in the South Island, due to the milder climate. When you work with Bay Energy Solutions, we will always make sure that you are Healthy Homes compliant, but if you want to know exactly what is required you can find out here.

How else can I measure the effectiveness of insulation?

R-Value is a great metric for measuring how effective your insulation is, but it’s not all you should be considering. While R-Value measures the ability to stop heat transfer through conduction, it doesn’t measure how heat can be lost through air leakage.

Some insulation types are able to create an air seal that prevents airflow and heat leakage. This means that while some insulation types might have lower R-Values, they can be just as effective and even more energy-efficient.

Every home has different needs and there are several factors that go into deciding which insulation type is right for you, including R-Value. When you work with Bay Energy Solutions, we can recommend and install the perfect insulation that is compliant, effective, and energy-efficient. Get in touch with us today to get your free home assessment and quote.