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View the thread, titled "can my underfloor heating freeze and break?" which is posted in Central Heating Forum on UK Plumbers Forums.

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shane tracey

Hi, I would appreciate your opinion on this. Our heat pump broke down while we were away and the temperature in the house dropped. A plumber came out to look over the house and check for damage. A couple of taps broke but we had turned off the water so no major problems that cant be fixed easily. However, he tested the underfloor heating downstairs and reports that 3 of the main circuits (there are 9 in total) had lost pressure probably due to a leak following frost damage. Is this possible? the pipes are laid in the screed under floor boards and there is no sign of any wet patches. I thought that in this situation frost wouldnt affect them. The temperature outside did get down to -15 degrees C. I am now having to face installing rads in the affected areas of the house - which involves bringing pipework through various sections of the house.
any advice you can give greatly appreciated.
 
It’s Possible yes as it’s just filled with water same as the taps best cause of action would be to pressure test each loop over 2 hours and see if any drop
 

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Title
can my underfloor heating freeze and break?
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Central Heating Forum
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shane tracey,
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ShaunCorbs,
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