最初由 Timothy's 发布
I am not sure about the cost. It looks like about half day's job for one person. I will not pay over 200 for that. You may able to find someone willing to do it cheaper.
DIY should not be too difficult since garage roof is not too high.
How old is the shingle? In Ottawa it usually last 18 to 20 years. Most of the time if the shingle shows sign of wear but does not break. It may still work for years. A Clawing shingle is just easier to be damage by wind. Take a careful look of the shingle if some piece is broken then you must replace it. If they only show signs of wear my guess is your can still wait.