Cold water header tank in loft


Postby St23 » Tue Dec 07, 2010 7:53 pm

I have a cold water header tank in my loft which feeds the hot water cylinder tank in my bathroom.

My concern is with regard to the cold water tank and pipes in the loft freezing up.

I have heard that, when the weather is freezing, that it is a good idea to open the loft hatch and allow warm air from the house to enter the loft.

I was wondering also if it is a good idea to minimise using the hot water taps. By not using them, you are not using any of the water from the hot water tank in the bathroom which obvioulsy means that it will not want feeding with water from the header tank in the loft.

In simple terms, I mean the water in the loft tank will be water which is not cold and fresh from outside - it will have been inside your house for a few days and will surley be warmer than that from outside and by not allowing fresh cold water to enter the tank, this might contribute to keeping things from freezing up.

Steve
St23
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Postby alavapint » Thu Dec 09, 2010 10:38 pm

The water that enters your header tank from the mains is possibly warmer (or should I say 'not as cold') than the water that you have stored in the tank in your loft
(not unless your loft is heated).

The best thing to do is make sure the tank is well lagged all round, as well as above and below ... check that all your pipes from the tank are also well insulated.

If in doubt add some extra layers..!

I'm sure you could open your loft hatch up ... but then all your heating will be going through the roof !
alavapint
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Joined: Tue Dec 07, 2010 10:58 pm


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