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Pipes burst, mainly, because the water inside them freezes and expands creating local pressures that normal metal pipes cannot withstand. It?s usually when the pipes begin to warm back up that the pressure that has built behind the freeze releases at a rate pipes are unable to endure, resulting in significant damage.
To prevent freeze-ups:
- Keep thermostats set to 55° or higher. Settings below this may not be suitable, especially with longer runs of pipe.
- Consider adding antifreeze to heating lines. Although some efficiency may be lost in the heating system you will have peace of mind knowing that flooding has been prevented. Natural/biodegradable antifreeze solutions are available and will last for a long time.
- Check univents to ensure that outside dampers are closed.
- Keep heaters and vents clear. This allows for greater circulation of warm air.
- Set circulator pumps to run continuously.
- Consider installing low temperature sensors/alarms to immediately alert you to potential freezing.
- Check buildings daily. During building closures it is important to assign a competent person to inspect the building each day for potential problems including freeze-ups and vandalism.
- Ensure pipes and walls are adequately insulated. The slightest gaps in insulation can provide a gateway for cold air to affect the water in the pipes.
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