Insulating against freezingPosted by admin in br2 plumbers boiler repairs, on April 6, 2014
When water freezes in a pipe it expand by 10%. This expansion cannot be stopped and as a result the pipe will split. Until the ice melts there is nothing to see but when the ice starts to thaw then a problem emerges as water starts to pour from the split. It is worth bearing in mind that pipework that has been subject to frost damage could have expanded over the whole length which may hamper you chances of renewing fittings due to the size difference due to expansion and more pipe may have to removed. BR2 Boiler Repairs are experienced in pipework insulation.The best way to attack this problem is to prevent it from happening by insulating the pipes that are at risk. Carrying out this task is fairly simple and can be done by most people. Insulating material is widely available but you must buy the right insulation. Insulation purposes:1). To provide thermal insulation against frost damage.2). To prevent the loss of heat from the pipework.3). To conserve fuel or prevent heat loss from a domestic hot water pipe to a draw off point.4). To cut down the transmission of noise to the adjoining structure, such as pipe work that has been set into an internal timber stud wall.A suggested minimum wall thickness of at least 22mm is advisable wher flexible foam is used for internal applications increasing to 22mm for outside applications. BR2 Plumbers carry out all major plumbing work. If loose fill materials are used this distance will increase further to provide a typical surrounding to the pipe of at least 100mm. Although pipework in the loft space will probably have no water in them they should however be insulated with the cistern itself of course except at its base where warm air will rise from below. All insulation must be securely fixed so it does not open and let in cold air. Water Regulations give a full requirement for insulating pipework.