Did you know that water can expand in volume by around 1/9th of its total composition. This means that when frozen it occupies more space than when in liquid form.
The above phenomena is very common in houses where water pipes burst over the winter due to ice forming in the pipes. The pipes which were once wide enough for water to go through are now too small when the ice forms.
The brittle nature of the metal when it feezes combined with the ice expanding causes them to crack. In fact the enormous power of frozen water is also used in quarries to loosen up huge blocks of rocks.