For homeowners, the true test of a roof happens many years after the initial work is done. We had Professional Roofers install our roof in 2008, and I wanted to write this review to say that while the company's service was great, the long-term results have not been.
It is impossible for me to say whether it is the shingles (IKO Cambridge) or the company's work, but either way I was left with these architectural shingles flying off a 10-year-old roof with wind gusts above 50 kph (not only in the 100 kph wind storm a year or so ago).
To be fair, the company had a 10 year warranty. So if you're going with them with the understanding that you will need to replace your roof in 10 years, you should be happy. But if you expect a longer life than that, like I did when choosing architectural shingles, you may want to do more homework.