Reflective Bubble Insulation R Value

If you install 2 layers of a reflective insulation does the r value double.

Reflective bubble insulation r value. An r 1 1 is provided from the product itself for the reflective double bubble material. Are two layers of polyethylene industrialized air bubbles bonded between exterior. Key benefits of this foil faced double bubble include. It does as you point out change the conductive properties.

Double bubble insulation is the most effective bubble insulation with highest r value. Some products say r4 r6 or r8. The rubber meets the road on reflectix s website where it says no air space no reflective insulation benefit. 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.

400sqft double bubble reflective foil insulation 4 x 100 ft roll industrial strength commercial grade no tear radiant barrier wrap weatherproofing attics windows garages rv s ducts more 4 4 out of 5 stars 56. More buying choices 144 44 10 new offers. Standard insulation is tested as a material with an r value per inch of thickness for example r 13 for 3 5 quot. 1 4 5 16 nominal thickness of foil bubble insulation.

The approximate r value of the air space would be about 1. Our double bubble products are ideal for metal buildings where the control of condensation is necessary. After all the trouble of trying to keep the bubble wrap off the ducts the total r value would be 2 instead of 1 which may be insufficient to prevent condensation under some conditions. Air space equals r value.

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. All our reflective double bubble products. 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.

With multiple layers of product and airspaces between each layer enhanced performance will be gained. The r value of reflective insulation is not measured by the inch. Of owens corning fiberglass and r 5 per inch with foamular foam board. If you don t provide air space this product provides almost no insulating value.

Any bubble insulation that is approximately thick can only achieve an average r value of 1 to 1 5 on its own. The r value of reflective insulation is measured within a system.