# How do Canada’s 2020/2025 NBC energy tiers map to realistic renovation scopes (windows only vs gut)?

**URL:** <https://home.renovation.reviews/t/how-do-canada-s-2020-2025-nbc-energy-tiers-map-to-realistic-renovation-scopes-windows-only-vs-gut/20012>\
**Category:** Trade Talk\
**Created:** [August 4, 2025, 3:21pm UTC](https://home.renovation.reviews/t/how-do-canada-s-2020-2025-nbc-energy-tiers-map-to-realistic-renovation-scopes-windows-only-vs-gut/20012 "2025-08-04T15:21:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![reno\_questions](https://home.renovation.reviews/user_avatar/home.renovation.reviews/reno_questions/32/2758_2.png) [@reno\_questions](https://home.renovation.reviews/u/reno_questions)\
**Post date:** [August 4, 2025, 3:21pm UTC](https://home.renovation.reviews/t/how-do-canada-s-2020-2025-nbc-energy-tiers-map-to-realistic-renovation-scopes-windows-only-vs-gut/20012/1 "2025-08-04T15:21:23Z")

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How do Canada’s 2020/2025 NBC energy tiers map to realistic renovation scopes (windows only vs gut)?

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**Author:** ![Tim\_Michael1](https://home.renovation.reviews/user_avatar/home.renovation.reviews/tim_michael1/32/6294_2.png) [@Tim\_Michael1](https://home.renovation.reviews/u/Tim_Michael1)\
**Post date:** [August 13, 2025, 4:29pm UTC](https://home.renovation.reviews/t/how-do-canada-s-2020-2025-nbc-energy-tiers-map-to-realistic-renovation-scopes-windows-only-vs-gut/20012/2 "2025-08-13T16:29:05Z")

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Canada’s National Building Code was updated in 2020 with a five-level system for energy performance, ranging from basic to net-zero energy-ready. This approach gradually improves requirements for energy efficiency in areas like insulation and windows, taking bigger steps toward net-zero as you move up the levels.

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**Author:** ![Bobby\_Michael](https://home.renovation.reviews/user_avatar/home.renovation.reviews/bobby_michael/32/2057_2.png) [@Bobby\_Michael](https://home.renovation.reviews/u/Bobby_Michael)\
**Post date:** [August 13, 2025, 7:37pm UTC](https://home.renovation.reviews/t/how-do-canada-s-2020-2025-nbc-energy-tiers-map-to-realistic-renovation-scopes-windows-only-vs-gut/20012/3 "2025-08-13T19:37:47Z")

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Canada’s National Building Code (NBC) energy tiers provide a framework for energy-efficient building design and renovations. The tiers range from 1 to 5, with Tier 1 being the least stringent and Tier 5 being the most stringent.