Well, there's the issue. It's different suppliers, different price points, different quality. The standards are there and in place, it's just that some suppliers follow them better than others and that accounts for the discrepancy.
Part of it is also that the explosion of demand hasn't been followed by an increase in skilled labour. Instead companies are going with cheap, unskilled workers and the results show. SSG isn't anything new, but we didn't have the quality issues fifteen years ago when there was a smaller batch of tradesmen doing all the work. And that applies right along the supply chain, from design to fabrication to installation to service.
And to prove my (biased) point, residential construction in the city is generally done under special collective agreements so that the same worker doing the same work will be paid much less to do it on a residential site as opposed to a commercial site. The result is that the more skilled workers will hold out for the commercial jobs, while the residential work is getting done by whoever couldn't get commercial work. And then people wonder why there are windows falling out of residential buildings?
