Reflective Insulation R Value

In contrast reflectix is always tested as part of an assembly e g.

Reflective insulation r 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. The higher the r value the more resistant a material or building assemblage is to conductive heat transfer. You can even place it under the foundation slab. R values for reflective insulations are dependent.

A simulated wall with 2x4 studs dry wall an air space and layer of reflectix. Install it anywhere from the roof to the foundation. 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. Notes on the r value k values of different forms of asbestos.

If you don t provide air space this product provides almost no insulating value. 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. Standard insulation is tested as a material with an r value per inch of thickness for example r 13 for 3 5 quot.

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. 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.

Select 2 to 4 items to compare. Notes to the table above. 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. The rubber meets the road on reflectix s website where it says no air space no reflective insulation benefit.

An r 1 1 is provided from the product itself for the reflective double bubble material. Of owens corning fiberglass and r 5 per inch with foamular foam board. Insulating board rigid insulation is one of the best tools to reduce your energy costs. The amount of insulation or r value you ll need depends on your climate type of heating and cooling.

Air space equals r value. If two products have the same r value they have the same efficiency in stopping heat transfer. It is the m easurement of a material s ability to stop heat transfer. 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.