Is ¼” fiberglass with a FOIL facing a better insulator than rFOIL™?
Like with foam products, fiberglass lacks tensile and puncture strength, and therefore must be laminated to a scrim to be handled without tearing. Fiberglass is also prone to hold heat and moisture, unlike the bubble in rFOIL™ ¼” fiberglass also compresses more than bubble, especially on the purlins. The air vacuum in rFOIL™ bubble is a much more effective thermal and condensation break than thin fiberglass, which is why ¼” fiberglass is seldom used in cold climates.
Related Questions
- For no more than insulation costs, I would use the same R 6 on all of the ductwork. I prefer the fiberglass with the foil exterior to wrap existing duct. It would actually not require any other moisture barrier as long as the joints are well fitted and sealed with mastic.
- Is ¼" fiberglass with a FOIL facing a better insulator than rFOIL™?
- Is ¼" rolled foam/foil a better insulator than rFOIL™?
