Reflective Attic Insulation R Value

What about r values for a reflective insulation and why do they vary with application.

Reflective attic insulation r value. Reflectix can provide verification for all r values stated for all products and applications. The higher the r value the greater the insulation performance. Air space equals r value. A reflective insulation product is a thicker product with an insulating middle layer such as fiberglass foam or air bubbles.

R values for reflective insulations are dependent. The overall r value of a wall or ceiling will be somewhat different from the r value of the insulation itself because heat flows more readily through studs joists and other building materials in a phenomenon known as thermal bridging. For example insulation that is compressed will not provide its full rated r value. Know exactly how much you need with our project calculators.

The rubber meets the road on reflectix s website where it says no air space no reflective insulation benefit. Most people are familiar with the term r value when discussing insulation properties. An r 1 1 is provided from the product itself for the reflective double bubble material. R value measures how well certain building insulation materials can resist heat.

If you don t provide air space this product provides almost no insulating value. It s a measure of how long it takes a heat absorbing product to absorb 100 of its potential and begin to transfer that heat out the other side of the product. Because of the presence of the small insulating layer a reflective insulation product by itself achieves a small r value typically around 1 0.