Reflective Bubble Insulation R Value

Some products say r4 r6 or r8.

Reflective bubble insulation r value.

If you don t provide air space this product provides almost no insulating value. Key benefits of this foil faced double bubble include. Air space equals r value. More buying choices 144 44 10 new offers.

A simulated wall with 2x4 studs dry wall an air space and layer of reflectix. Insulation companies who make metallic bubble wrap or their distributors like to boast about their products attributes and often add the equivalent reflective r values to the conductive values giving an overall equivalent r value. Are two layers of polyethylene industrialized air bubbles bonded between exterior. If the product is simply doubled with no air space between the layers a very minimal benefit is obtained r 1 1 per layer for the reflective double bubble.

Double bubble insulation provides the maximum efficiency and highest r value for bubble insulation. An r 1 1 is provided from the product itself for the reflective double bubble material. The r value of reflective insulation is not measured by the inch. Double bubble insulation is the most effective bubble insulation with highest r value.

In contrast reflectix is always tested as part of an assembly e g. It does as you point out change the conductive properties. With multiple layers of product and airspaces between each layer enhanced performance will be gained. Any bubble insulation that is approximately thick can only achieve an average r value of 1 to 1 5 on its own.

The rubber meets the road on reflectix s website where it says no air space no reflective insulation benefit. Our double bubble products are ideal for metal buildings where the control of condensation is necessary. All our reflective double bubble products. The r value of reflective insulation is measured within a system.

1 4 5 16 nominal thickness of foil bubble insulation. Although prodex total is not a foil faced bubble wrap we will answer the author s question because foil faced bubble wrap is a reflective insulation that deserves a defense. 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. Of owens corning fiberglass and r 5 per inch with foamular foam board.

The approximate r value of the air space would be about 1. If you install 2 layers of a reflective insulation does the r value double.