According to Al Jaugelis of RDH Building Sciences, the 2017 update is more a matter of evolutionary tweaks than major changes. It is not anticipated that the standard, when and if it is adopted into building codes, will result in major changes to how windows and doors are built and tested.
Highlights of the update:
- Parallel opening windows and folding door systems now addressed in the standard
- Canadian and American test requirements harmonized
- Leakage through door hardware and site-installed door hardware addressed
- Changes to test specimens and testing and labelling of mullions and casement sashes
- Changes to component and material requirements, including exterior fasteners, fall prevention devices, vinyl quality, thermoplastics, wood moisture content and wood flush and moulded fibre doors