Double Bubble Reflective Foil Insulation R Value

Are two layers of polyethylene industrialized air bubbles bonded between exterior.

Double bubble reflective foil insulation r value.

Of owens corning fiberglass and r 5 per inch with foamular foam board. Our double bubble products are ideal for metal buildings where the control of condensation is necessary. R value is roughly 6 8 when used in a wall. R value is roughly 10 6 when used in a ceiling.

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. R value is roughly 5 3 when used in a floor. A simulated wall with 2x4 studs dry wall an air space and layer of reflectix. Double bubble insulation provides the maximum efficiency and highest r value for bubble insulation.

Convection mass air transport conduction by touch radiation. In contrast reflectix is always tested as part of an assembly e g. However we see claims of up to r 14 for some bubble products. Double the bubbles for double the airspace.

The main one in the latter category is foil faced bubble wrap sold as insulation. The foil face bubble wrap manufacturers may have a fantastic product but they unfortunately market their product to an industry that is unaware of codes that restrict its use. If you are. Insulation s r value is a measurement how much resistance against conduction.

Standard insulation is tested as a material with an r value per inch of thickness for example r 13 for 3 5 quot. Key benefits of this foil faced double bubble include. The r value of foil faced bubble wrap is about one. Generally the following values are a good.

For exact specifications per application contact the vendor. Heat moves by 3 methods. If you read the fine print this rating is always achieved as part of an overall assembly which usually includes a lot of dead air spaces. Bubble foil does offer some r value because of the bubbles because remember radiant barrier does not have an r value on its own.

If you install 2 layers of a reflective insulation does the r value double. Any bubble insulation that is approximately thick can only achieve an average r value of 1 to 1 5 on its own. All our reflective double bubble products. 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.

With multiple layers of product and airspaces between each layer enhanced performance will be gained. The r value of an assembly that includes foil faced bubble wrap could be significantly higher. The r value is dependent upon the type of application used.