Why Window Energy Rating (ER) is still in the NBC 2025?

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Presenter:
  • Jeff Baker, M.A.Sc., P.Eng. WESTLab

Summary:

  • U-factor, SHGC and ER.
  • Minimum Prescriptive Code in NBC 9.36.
  • New Minimum 2025 Prescriptive Tier 5 for Fenestration Requirements.
  • 2025 SHGC Limits.
  • What does all this look like?
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