What is the effective thermal resistance of foil-faced bubble insulation and other similar products recognized by Natural Resources Canada (NRCan) to model homes?
At this time, despite claims made by Canadian manufacturers and salespeople, and unless otherwise proven by a respected third-party testing agency against a recognized standard for the testing of such reflective materials, NRCan recommends the following effective thermal resistance maximum values for foil-faced bubble insulation products or the foil-faced portion of a laminated layer of foam or fibre-based insulation board when modeling them in the simulation software. • RSI 0.26 (R 1.5) where the bubble layer is between two layers of foil without air spaces in front of the foil. • RSI 0.53 (R 3) where the bubble layer is between two layers of foil with only one air space in front of the interior facing foil. • RSI 0.62 (R 3.5) where the bubble layer is between two layers of foil with air spaces in front of the foils. • RSI 0.62 (R 3.5) where the foil layer is between two clear layers of bubbles acting as air spaces NRCan does not comment on other characteristics of foil-faced bubble i
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- What is the effective thermal resistance of foil-faced bubble insulation and other similar products recognized by Natural Resources Canada (NRCan) to model homes?
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