- #Ontario building code of canada how to
- #Ontario building code of canada update
- #Ontario building code of canada windows
With regard to energy step codes, manufacturers will need to understand how to provide product performance details in a manner that energy modelers can use to optimize their designs. It is based on a “four pillar” framework, involving net zero energy (NZE) new buildings using recommended Energy Step Codes, a proposed separate code for existing buildings, labeling of energy use in buildings and the regulation of equipment and appliances. Climate ChangeĪdopted December 9, 2016, the Pan-Canadian Framework on Clean Growth and Climate Change is a Canadian government plan to meet emissions reduction targets, grow the economy and build resilience to a changing climate. All provinces are using the U-factor for compliance, with most using the 2011 version (Nova Scotia uses 2015, note there were no changes in the 2015 NECB for fenestration).
#Ontario building code of canada windows
The maximum U-factor for windows and doors is 2.4 to 1.8 (0.42 to 0.28). This is given as a ratio of the glazed area to the total wall area and varies from 0.4 to 0.2 with increasing HDD. In the commercial sector, the NECB sets maximum permitted fenestration and door areas.
The Canadian ENERGY STAR program for 2020 is looking at establishing one zone for the entire country with performance levels set at a maximum U-factor of 1.2 (0.21) OR minimum ER 34 nationwide.
NRCan is proposing a national regulation on windows and sliding glass doors: It works to ensure the responsible development of Canada's natural resources. Natural Resources Canada ( NRCan), created in 1995, is the ministry of the government of Canada responsible for natural resources, energy, minerals and metals, forests, earth sciences, mapping and remote sensing. In Ontario, the requirement for windows is U = 2.0 (0.35) or ER ≥ 17 in British Columbia, it is U = 1.8 (0.32) for windows, curtain wall, store fronts and sliding glass doors, and for skylights it is 3.1 (0.55). Two provinces, Ontario and British Columbia, have their own energy acts that include fenestration. A complete explanation of the ER equation may be found in the CSA A440.2 Standard. For skylights, maximum U-factors range from 2.9 to 2.4 (0.51 to 0.42) across the six zones. Thermal transmittance is also defined in terms of an Energy Rating (ER), which is a unitless value that balances U-factor, SHGC and air leakage per the equation ER = (57.76)SHGC – (21.90)U – (1.97)L + 40, where L is the fenestration system air leakage rate at a pressure difference of 75 Pa. Maximum U-factor requirements for new residential windows, given in W/m2☌, range from 1.8 down to 1.4 (equivalent to 0.32 to 0.21 in BTU/hr/ft 2/☏). Section 9.36 of the NBC divides the country into six zones based on heating degree days (HDD). These codes are contained in Section 9.36 of the National Building Code (NBC) for new residential buildings and in the National Energy Code for Buildings (NECB) for commercial projects.
#Ontario building code of canada update
Jeff Baker ( Fenestration Canada) presented an update on the status of Canadian energy codes at the AAMA Western Region Summer Summit.
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