I got Sears to install new shingles on my roof in 2011. In 2012 already I noticed a leak in the garage. Wasn't sure if it was from the previous owner or a new thing as I only saw the stain.
Finally caught it leaking water and took pictures of the leak this year 2014 in August.
I had several estimators and they showed multiple mistakes made during installation: improper shingle/flashing, architectural shingles were laid down in a wrong pattern (apparently these need to be laid down in 45 degree pattern, they laid them down just like plain rectangular shingles).
They don't even have anyone in Ottawa area any more, I had to call roofers to take a look and give a quote.
The representative still refuses to pay for the repair even though I have 10 year roof leak warranty.
Never again. Even if they still had the service (no wonder they stopped installation service in Ottawa area).