As a result, corner chips and breaks can be a significant problem. Some concrete roofs (Not usually Hardishake or Maxishake) are "Half Bonded" meaning the shingle above and the shingle below are spaced halfway between each other. Please see the picture below for an example of "Half Bonded". The picture is actually of paving tiles but you'll get the idea. The tile below is halfway across the tile above:
By lapping the shingle above halfway across the shingle below you have quite a bit of water protection if a corner was to chip or break off due to small hail. In other words, half the shingle would need to break off in order to over expose the shingle below.
However, when you have a Hardishake roof with varying widths, a corner chipped away could easily cause overexposure to the shingle below. The shingle beneath is vulnerable. If there's a way for water to get into your home, it will eventually find it's way inside. Here's an example of a chip in a varying width installation...
Often Hardishake corner chips are as small as 1/2"... but not all of them are! Many are 2"-3". It isn't unusual to see a roof with several smaller corner chips AND a few shingles that are also chipped in half.
Anytime your roof is falling off in pieces, you need to be concerned. If your roof has corner chips and breaks, pick up the phone and call me (817) 781-9982.