It is further recommended to dig a trench and see the water pipe to identify her condition. If damaged, the plastic, which is unlikely, should be replaced by a pipe and insulate it with insulating materials. One of the features of plastic products is to maintain the performance of water freezing inside. Will also have a beneficial effect of laying the heating cable, which will provide the desired temperature in the pipe for water supply works normal.
The following workaround is to unfreeze pipes Metal or plastic, is pretty simple, but in the future, an unpleasant situation could happen again. To do this, unscrew the pipe in the house, fix it firmly and using a funnel to pour hot water. Time it can take a lot, so it is unknown how long formed an ice plug. Some advise further inserted into the tube metal wire or other object and try to clear the jam. In this manner, as a rule, only damaged plumbing elements within and tube have to change.