Reflective Insulation R Value

Notes to the table above.

Reflective insulation r value.

If you don t provide air space this product provides almost no insulating value. Of owens corning fiberglass and r 5 per inch with foamular foam board. It is the m easurement of a material s ability to stop heat transfer. If two products have the same r value they have the same efficiency in stopping heat transfer.

In contrast reflectix is always tested as part of an assembly e g. What about r values for a reflective insulation and why do they vary with application. You can even place it under the foundation slab. The amount of insulation or r value you ll need depends on your climate type of heating and cooling.

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. Notes on the r value k values of different forms of asbestos. Although it is possible to calculate an r value for a specific radiant barrier or reflective insulation installation the effectiveness of these systems lies in their ability to reduce heat gain by reflecting heat away from the living space. In reflective insulation the r value refers to a measure of the insulation s resistance to heat flow.

Measuring the r value of reflective insulation vs. Standard insulation is tested as a material with an r value per inch of thickness for example r 13 for 3 5 quot. Select 2 to 4 items to compare. Air space equals r value.

An r value is a measure of an insulation product s resistance to thermal heat transfer. Most people are familiar with the term r value when discussing insulation properties. Insulating board rigid insulation is one of the best tools to reduce your energy costs. Install it anywhere from the roof to the foundation.

Rigid foam insulation also known as insulating boards provide high r values. Any bubble insulation that is approximately thick can only achieve an average r value of 1 to 1 5 on its own. An r 1 1 is provided from the product itself for the reflective double bubble material. Any additional r value is achieved by the use of dead air spaces around the reflective product or in used in conjunction with other mass insulation products like fiberglass foam etc.

The rubber meets the road on reflectix s website where it says no air space no reflective insulation benefit. Reflectix can provide verification for all r values stated for all products and applications. A simulated wall with 2x4 studs dry wall an air space and layer of reflectix. R values for reflective insulations are dependent.