HYPERLINK “http://www.diyfixit.co.uk/plumbing/insulation-of-plumbing.html” Insulation of Plumbing Fixtures.Pipes, fixtures and fittings which are exposed to freezing temperatures should be protected. Advice can be obtained by contacting a professional service like Archway Plumbers . Cisterns (or tanks as they are often called) in the attic, outside water pipes and taps are also affected. Supply pipes rising through a solid floor normally only require insulating if they are close to an external wall. Exposed overflow pipes that drip water can also be a freezing risk. When water freezes and turns to ice, it expands in size by around 10%. Where this takes place within a pipe it causes expansion and splits can occur. While it remains frozen, obviously the water won’t escape. However once it melts as temperatures rise, the split in the pipe, or the opened fitting, begins to leak and the amount of potential damage can be enormous.It may be more sensible to drain down a section as recommended by an Archway Plumber . A good example of this might be a pipe running externally to supply a garden tap at the back of the house. If the tap is only used in the summer, turn off the supply and drain off excess water for the winter. The insulation material can be cut to length. At elbows and T pieces the insulation may need to be cut to suit and on sweeping bends the insulation will normally flex sufficiently. At fittings such as stop valves and the like, be sure to protect the entire body of the valve whilst leaving the head free so that it can still be used.Tanks fitted in lofts need to be be completely insulated. It is very important that the bottom of the cistern is left un-insulated and there is no lagging material immediately beneath it so any heat rising from the room below at this point will help reduce the risk of freezing. Insulation to water storage cisterns actually has an additional purpose. Regulations state that water in storage cisterns should not be allowed to exceed 25 degrees C. The insulation therefore has a double benefit by preventing absorption of heat as well. Be sure to also insulate overflow pipes from water storage cisterns.