If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.

In article ,
harry wrote:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.

That happened here by accident. The bath waste is now frozen up.

--
from KT24 in Surrey, England

harry Wrote in message:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.


More Viz top tips?
--
Jim K


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On 01/03/2018 16:59, charles wrote:
In article ,
harry wrote:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.

That happened here by accident. The bath waste is now frozen up.


DW left the basin dripping. Luckily running the bath tap unfroze the
waste, so I didn't have to get up a ladder with a kettle of hot water in
a blizzard.

On 01-Mar-18 5:37 PM, jim wrote:
harry Wrote in message:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.


More Viz top tips?


It won't stop the pipes freezing; the flow rate is too little to do
that. In theory, it provides a pressure relief point if they do. It
therefore follows that the tap to leave dripping is one at the end of a
pipe that is particularly vulnerable to freezing. You also need to hope
that the freezing first happens furthest from the tap before progressing
towards it.


--
--

Colin Bignell

On Thursday, March 1, 2018 at 4:57:52 PM UTC, harry wrote:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.

I did that once. The waste pipe froze, the basin over-flowed and caused a flood.

On 01/03/2018 20:13, Onetap wrote:
On Thursday, March 1, 2018 at 4:57:52 PM UTC, harry wrote:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.

I did that once. The waste pipe froze, the basin over-flowed and caused a flood.


Best to use a bath tap. That takes quite a while to overflow.

"GB" wrote in message
news
On 01/03/2018 16:59, charles wrote:
In article ,
harry wrote:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.

That happened here by accident. The bath waste is now frozen up.


DW left the basin dripping. Luckily running the bath tap unfroze the
waste, so I didn't have to get up a ladder with a kettle of hot water in a
blizzard.

I had to unblock both the washbasin/bath wastepipe and the kitchen wastepipe
this morning at my parents' holiday cottage where we are living at the
moment. The bath one runs dead horizontal from where it emerges through the
wall to the right-angle join where the pipe then runs vertical - unlike the
toilet soil pipe alongside it, there is no gradual fall. The kitchen one is
bowed because there is a long length that is only supported at either end.
So in both cases there is part of the pipe where water collects and never
completely empties.

I tried the kettle trick in both cases, to no avail, so I had to pull the
push-fit connections apart and shake the pipes and pour boiling water into
one end. Eventually I got the tell-tale gurgle and long lengths of ice
cylinders shot out of the end.

When the weather warms up, I'll be doing a bit of work on both of those
pipes to prevent it happening again.

On 01/03/2018 17:37, jim wrote:
harry Wrote in message:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.


More Viz top tips?

a trick my fathe used in a non centrally heated house in the noth east
in th 50s was to tie a musin bag of salt under a dripping tap to
prevent the aste freezing

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On Thursday, 1 March 2018 19:51:17 UTC, Nightjar wrote:
On 01-Mar-18 5:37 PM, jim wrote:
harry Wrote in message:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.


More Viz top tips?


It won't stop the pipes freezing; the flow rate is too little to do
that. In theory, it provides a pressure relief point if they do. It
therefore follows that the tap to leave dripping is one at the end of a
pipe that is particularly vulnerable to freezing. You also need to hope
that the freezing first happens furthest from the tap before progressing
towards it.


--
--

Colin Bignell

It does stop them freezing providing the're insulated.. The water comes out of the ground at around 10degC.
After a while you know how fast to let it go to prevent freezing,
My drains are all internal.
No tank in loft.

On 02-Mar-18 3:51 PM, harry wrote:
On Thursday, 1 March 2018 19:51:17 UTC, Nightjar wrote:
On 01-Mar-18 5:37 PM, jim wrote:
harry Wrote in message:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.


More Viz top tips?


It won't stop the pipes freezing; the flow rate is too little to do
that. In theory, it provides a pressure relief point if they do. It
therefore follows that the tap to leave dripping is one at the end of a
pipe that is particularly vulnerable to freezing. You also need to hope
that the freezing first happens furthest from the tap before progressing
towards it.



It does stop them freezing providing the're insulated.. The water comes out of the ground at around 10degC.
After a while you know how fast to let it go to prevent freezing,

You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

My drains are all internal.
No tank in loft.

I have a warm loft, with the insulation under the tiles.



--
--

Colin Bignell

On Friday, 2 March 2018 16:55:43 UTC, Nightjar wrote:
On 02-Mar-18 3:51 PM, harry wrote:
On Thursday, 1 March 2018 19:51:17 UTC, Nightjar wrote:
On 01-Mar-18 5:37 PM, jim wrote:
harry Wrote in message:
If you think your pipes might freeze, leave a tap dripping.
The one furthest from the stop tap.


More Viz top tips?


It won't stop the pipes freezing; the flow rate is too little to do
that. In theory, it provides a pressure relief point if they do. It
therefore follows that the tap to leave dripping is one at the end of a
pipe that is particularly vulnerable to freezing. You also need to hope
that the freezing first happens furthest from the tap before progressing
towards it.



It does stop them freezing providing the're insulated.. The water comes out of the ground at around 10degC.
After a while you know how fast to let it go to prevent freezing,

You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

My drains are all internal.
No tank in loft.

I have a warm loft, with the insulation under the tiles.



--


No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, Nightjar wrote:
....
You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

....
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will waste
around 20 litres a day.

--
--

Colin Bignell

Nightjar posted
On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, Nightjar wrote:
...
You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

...
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will waste
around 20 litres a day.


Think how much energy you're wasting by heating your roof void.

--
Jack

On Saturday, 3 March 2018 09:26:23 UTC, Nightjar wrote:
On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, Nightjar wrote:
...
You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

...
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will waste
around 20 litres a day.

I don't have a water meter so I can't verify this.
In any event, it only needs leaving on overnight. (Say eight hours)
Cheaper than having to fix a leak even if you have a meter.
And possible water damage/even greater wastage.

On 03-Mar-18 3:29 PM, harry wrote:
On Saturday, 3 March 2018 09:26:23 UTC, Nightjar wrote:
On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, Nightjar wrote:
...
You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

...
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will waste
around 20 litres a day.

I don't have a water meter so I can't verify this.
In any event, it only needs leaving on overnight. (Say eight hours)
Cheaper than having to fix a leak even if you have a meter.
And possible water damage/even greater wastage.


Decent pipe lagging and an internal stopcock on outside tap feeds is a
better option.

--
--

Colin Bignell

On 03-Mar-18 9:32 AM, Handsome Jack wrote:
Nightjar posted
On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, NightjarÂ* wrote:
...
You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

...
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will waste
around 20 litres a day.


Think how much energy you're wasting by heating your roof void.


You haven't really thought that through, have you? Energy is only wasted
when heat transits from the warm interior to a cold exterior. It is
irrelevant whether you choose to have that transition point above or
below the loft space. In fact, as part of the roof replacement was
upgrading the insulation levels, my warm loft loses less heat than the
cold loft I had before.

--
--

Colin Bignell

Nightjar posted
On 03-Mar-18 9:32 AM, Handsome Jack wrote:
Nightjar posted
On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, Nightjar* wrote:
...
You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

...
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will
waste around 20 litres a day.
Think how much energy you're wasting by heating your roof void.


You haven't really thought that through, have you? Energy is only
wasted when heat transits from the warm interior to a cold exterior. It
is irrelevant whether you choose to have that transition point above or
below the loft space.

It follows that, if your roof space were two miles high, heating it
wouldn't waste any more energy than it does now. But that's absurd. So
your remark is absurd.

--
Jack

On Saturday, 3 March 2018 16:41:38 UTC, Nightjar wrote:
On 03-Mar-18 9:32 AM, Handsome Jack wrote:
Nightjar posted
On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, NightjarÂ* wrote:
...
You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

...
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will waste
around 20 litres a day.


Think how much energy you're wasting by heating your roof void.


You haven't really thought that through, have you? Energy is only wasted
when heat transits from the warm interior to a cold exterior. It is
irrelevant whether you choose to have that transition point above or
below the loft space. In fact, as part of the roof replacement was
upgrading the insulation levels, my warm loft loses less heat than the
cold loft I had before.

It's Rod.

On 03-Mar-18 4:50 PM, Handsome Jack wrote:
Nightjar posted
On 03-Mar-18 9:32 AM, Handsome Jack wrote:
Nightjar posted
On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, NightjarÂ* wrote:
...
You are going to be wasting a lot of water if you have it flowing
fast
enough to prevent freezing.

...
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will
wasteÂ* around 20 litres a day.
Â* Think how much energy you're wasting by heating your roof void.


You haven't really thought that through, have you? Energy is only
wasted when heat transits from the warm interior to a cold exterior.
It is irrelevant whether you choose to have that transition point
above or below the loft space.

It follows that, if your roof space were two miles high, heating it
wouldn't waste any more energy than it does now. But that's absurd. So
your remark is absurd.


Irrespective of the volume of the space, if the rate of heat loss to the
outside is the same or less, it needs no more energy to maintain the
temperature. There could be an initial heat input required to bring it
up to temperature, but that is not a waste of energy. If, as with my
roof, the work is done in the summer, the loft space starts out warm enough.

--
--

Colin Bignell

In article , Nightjar
writes
On 03-Mar-18 3:29 PM, harry wrote:
On Saturday, 3 March 2018 09:26:23 UTC, Nightjar wrote:
On 03-Mar-18 7:51 AM, harry wrote:
On Friday, 2 March 2018 16:55:43 UTC, Nightjar wrote:
...
You are going to be wasting a lot of water if you have it flowing fast
enough to prevent freezing.

...
No it doesn't. A fast drip for even the coldest weather.
In the UK anyway.

One drip a second, which I would not class as a fast drip, will waste
around 20 litres a day.

I don't have a water meter so I can't verify this.
In any event, it only needs leaving on overnight. (Say eight hours)
Cheaper than having to fix a leak even if you have a meter.
And possible water damage/even greater wastage.


Decent pipe lagging and an internal stopcock on outside tap feeds is a
better option.

I left my outside tap with water feed on, lagged it so that it froze tap
first and it has been perfectly OK. As long as the water can expand as
it freezes the pipes will not be burst.
--
bert