Canadian NAFS and BCBC 9.36 Calculator

Window and Door Performance Grade & Water Test Pressure Selection for locations within Canada (excludes unit skylights) using AAMA / WDMA / CSA 101 / I.S.2 / A440-8/11 North American Fenestration Standards (NAFS)

Includes required Thermal Characteristics for Fenestration and Doors: BCBC 2012 - 9.36.2.7
The purpose of this online tool is to aid designers with generally understanding the intent of designing and selecting fenestration and door products in accordance with local building code requirements in conjunction with the NAFS standard and the 2009 Canadian Supplement for NAFS, as well as determining the maximum permitted overall thermal transmittance values for Part 9 fenestration and doors as part of the 2012 BCBC requirements for Energy Efficiency.  
 
It is not intended to be used in lieu of reading, understanding, and manually calculating the requirements for fenestration on any project.  This calculator, and the accuracy of the resulting information, has not been reviewed, approved, or authorized by the publishers of any standard or any regulatory body.
 
Upon the initial introduction of the NAFS standard into the BC Building Code in 2012, the only acceptable solution identified for selection of  fenestration and door products for both Part 5 and Part 9 buildings was to utilize the NAFS standard and the 2009 Canadian Supplement for NAFS.  Updates to the British Columbia Building Code in 2014 revised the referenced version of the 2009 Canadian Supplement to Update No 1 (July 2013), which provided more current climatic data and additional location data.  Further updates to the British Columbia Building Code again in 2015 resulted in further options for design and selection of fenestration and door products for both Part 5 and Part 9 buildings as follows:
 
  • Part 5 buildings may still utilize the NAFS standard in conjunction with the 2009 Canadian Supplement for NAFS Update No 1 (July 2013), but can also instead select fenestration and door products utilizing a design basis to resist or accommodate the structural loads and environmental loads related to heat transfer, air leakage, and precipitation.
  • Part 9 buildings may still also utilize the NAFS standard in conjunction with the 2009 Canadian Supplement for NAFS Update No 1 (July 2013), but where buildings are less than 10m in height, may instead utilize climatic data values contained in Table C-4 of Appendix C of the BC Building Code instead of the value calculated in the Canadian Supplement.  Part 9 buildings can also instead select fenestration and door products utilizing a Part 5 design basis to resist or accommodate the structural and environmental loads related to heat transfer, air leakage, and precipitation.
The ‘NAFS Results’ data presented in this online tool for the Part 9 data set buildings located in British Columbia are representative of buildings less than 10m in height, and hence utilize the BC Building Code Appendix C table C-4 climatic data.  For scenarios where it is instead intended to utilize the 2009 Canadian Supplement for NAFS Update No 1 (July 2013) for a Part 9 building, the user should select the Part 5 data set to display ‘NAFS results’ that do not utilize the BC Building Code Appendix C table C-4 climatic data.


Province:
Data Set:
Location:
Building Height (m):
Terrain:
Class:

Other calculators, using different calculation algorithms (not table method) in various instances return a different Performance Grade value.

Calculations

DRWP: --- Pa
HWP: --- Pa
Specified DRWP: --- Pa
Specified HWP: --- Pa
Performance Grade: ---  
Water Test Pressure from specified DRWP: --- Pa
Water Test Pressure from Performance Grade: --- Pa

NAFS Results

Performance Grade (final): ---    
Water Test Pressure (final): --- Pa

BCBC 9.36

Maximum U-Value for Fenestration and Glass Doors: ---  W/(m2 * K)

All standard Cascadia products meet the highest water test pressure recognized by the NAFS standard - 730 Pa (15 PSF).

Cascadia manufactures several standard window and door products, as well as custom products for almost any application.

Please contact us for information on the Performance Grades of our standard products. Call us, or email: – President.