Plastic water Pipes in loft with no insulation

[sb6...@ymail.com]

Hello, Thanks in advance for any replies.

I have just had a new boiler fitted in the loft and the person who
installed it did not insulate the plastic water pipes but did the
copper ones. Is this an issue or dont you need to insulate plastic
pipes ?. The pipe in question is going to the overflow unit to top up
the rads and looks to be coming from the mains feed which feels up the
water tank.

Thanks in advance
Steve

[Harry Bloomfield]

on 10/12/2009, sb6...@ymail.com supposed :

If copper and plastic have been used, then probably the plastic is ONLY
used for overflows - in which case no insulation is necessary.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

[robgraham]

On 10 Dec, 17:37, Harry Bloomfield <harry.m1...@NOSPAM.tiscali.co.uk>
wrote:

And being plastic it will freeze in the worst case, without bursting.

[sb6...@ymail.com]

Hi Harry, Thanks for the reply. I have just double checked, the pipe
in question is to top up the sealed rads and is coming from the mains
supply so under mains pressure and is a grey 15mm plastic pipe and
clipped to the loft boards. Does this mean i need to insulate them.
The copper pipes are part of the radiator loop and to fill up the hot
water tank.

Thanks again,
Steve

, On 10 Dec, 17:37, Harry Bloomfield

[Harry Bloomfield]

sb6...@ymail.com wrote :

> Hi Harry, Thanks for the reply. I have just double checked, the pipe
> in question is to top up the sealed rads and is coming from the mains
> supply so under mains pressure and is a grey 15mm plastic pipe and
> clipped to the loft boards. Does this mean i need to insulate them.
> The copper pipes are part of the radiator loop and to fill up the hot
> water tank.

As the other poster suggested, plastic is less prone to splitting - but
it can still split. Insulation is cheap, I would fit some for peace of
mind.

[Andrew Gabriel]

In article <mn.543d7d9ccd...@nospam.tiscali.co.uk>,

Harry Bloomfield <harry...@NOSPAM.tiscali.co.uk> writes:
> sb6...@ymail.com wrote :
>> Hi Harry, Thanks for the reply. I have just double checked, the pipe
>> in question is to top up the sealed rads and is coming from the mains
>> supply so under mains pressure and is a grey 15mm plastic pipe and
>> clipped to the loft boards. Does this mean i need to insulate them.
>> The copper pipes are part of the radiator loop and to fill up the hot
>> water tank.
>
> As the other poster suggested, plastic is less prone to splitting - but
> it can still split. Insulation is cheap, I would fit some for peace of
> mind.

If it freezes, it usually just pushes all the joints apart.
That's not a problem, until it thaws out...

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

[The Natural Philosopher]

well its not a disaster if it freezes. It wont split, and in all
probability it will that aw when you need water out of it. But I would
lag it meself to be on the safe side.

> Thanks in advance
> Steve
>

[sb6838]

Thanks to all for all your replies. As suggested I will insulate the
pipe.

Thanks again
Steve.

On 10 Dec, 20:12, The Natural Philosopher <t...@invalid.invalid>
wrote: