Reflective Insulation R Value

It is the m easurement of a material s ability to stop heat transfer.

Reflective insulation r value.

Insulating board rigid insulation is one of the best tools to reduce your energy costs. You can even place it under the foundation slab. An r 1 1 is provided from the product itself for the reflective double bubble material. Air space equals r value.

The higher the r value the more resistant a material or building assemblage is to conductive heat transfer. Most people are familiar with the term r value when discussing insulation properties. 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.

The amount of insulation or r value you ll need depends on your climate type of heating and cooling. Measuring the r value of reflective insulation vs. In reflective insulation the r value refers to a measure of the insulation s resistance to heat flow. Select 2 to 4 items to compare.

Reflectix can provide verification for all r values stated for all products and applications. R values for reflective insulations are dependent. Rigid foam insulation also known as insulating boards provide high r values. 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.

Any bubble insulation that is approximately thick can only achieve an average r value of 1 to 1 5 on its own. 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. Install it anywhere from the roof to the foundation. Of owens corning fiberglass and r 5 per inch with foamular foam board.

An r value is a measure of an insulation product s resistance to thermal heat transfer. In contrast reflectix is always tested as part of an assembly e g. A simulated wall with 2x4 studs dry wall an air space and layer of reflectix. The purpose of the insulation is to help the hvac system run more efficiently by keeping the conditioned air at the proper temperature without leaking or being affected by the unconditioned air outside of the system making heat flow resistance a key measurement.

Standard insulation is tested as a material with an r value per inch of thickness for example r 13 for 3 5 quot. Notes on the r value k values of different forms of asbestos. Rosato asbestos insulation is the most authoritative source on asbestos properties and gives data for the thermal conductivity of asbestos in different forms and with varying temperatures for magnesia asbestos insulation at mean temperatures ranging from 100 f to 400 f the k value thermal. If two products have the same r value they have the same efficiency in stopping heat transfer.