In the new 2012 BCBC there are two standards that govern window and door performance. There is NAFS-08 (North American Fenestration Standard) and A440S1-09 (Canadian Supplement). The second standard is specific to product being sold and installed in Canada. NAFS of course is the main document that focuses on product testing and performance. But as it is a harmonized standard with the United States there were some items that could not be agreed upon. The Canadian Supplement says, “Canadian requirements were deemed necessary to establish loads and procedures and to ensure accepted minimum levels of performance”. The key here is if product is sold in Canada it must also meet the requirements of the Canadian Supplement.
For example the tests for air penetration are performed for infiltration AND exfiltration (see below), in the US the test is only for air infiltration.
Also in Canada you must test your window screen system. This is a test of the largest size screen you produce in each window system, by placing a 14 pound weight on the interior loading outward, in the center of the screen. It must hold in place without damage for a minimum of 10 seconds. We have passed window screen testing in 2000/3000/4000/Combo wood screen/Euro Series. Do not interpret this as the screens ability to keep a person from falling through a screen. With all the recent news about children falling through windows, discuss the inclusion of window restrictors with your clients.
Please See www.windowsafety.ca for some very good information on this topic.
As we move toward the implementation of the 2012 BCBC (Dec.20/2013) now is a good time to start the discussion about what product your customer will use in their projects. I have spent a lot of time in the lab the last six months working on getting Westeck’s wide array of products tested to meet this coming change. As you know our product mix and project designs are creating the demand for larger more custom products, getting these products to meet the requirements is no easy feat, and very expensive. The new code is going to change how products are built. I have attached a short video of a recent exfiltration wind load test of a Euro Series window product, built with significant steel mull and frame reinforcing (Click Here to View), watch the window bow away from the tip of the closest gauge, you will be amazed.