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Reflective insulation

Also called: reflective foil insulation
NCC
means a building membrane with a reflective surface such as a reflective foil laminate, reflective barrier, foil batt or the like capable of reducing radiant heat flow.

Explanatory information for Volume Two:

  1. (a) Typical R-Values achieved by adding reflective insulation are given in the explanatory information accompanying Figures 3.12.1.1 , 3.12.1.3 and 3.12.1.4 . Information on specific products may be obtained from reflective insulation manufacturers.
  2. (b) The surface of reflective insulation may be described in terms of its emittance (or infra-red emittance) or in terms of its reflectance (or solar reflectance). Generally, for the surface of a particular reflective insulation –
  3. (c) emittance + reflectance = 1.
  4. (d) Some types of reflective insulation may also serve the purposes of waterproofing or vapour proofing.
HB50
thermal insulation with one or more surfaces of high reflection factor and low emission factor for low temperature (longwave) radiation placed within the building envelope, and usually in conjunction with an air space or spaces, to reduce radiant heat transfer to adjoining elements or the interior
See Figure A.8; Figure A.39

Figure A.8: Brick and brick veneer construction

Figure A.39: Window construction

HB50
reflective insulation