Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
Re: Insulation under under-floor heating pad?
31 views
Skip to first unread message
Message has been deleted
Tim Watts
Jun 18, 2013, 7:07:26 AM6/18/13
to
On Tuesday 18 June 2013 09:56 Tim Streater wrote in uk.d-i-y:
> Do I need it?
>
> The sparks putting it in says that the heating pad can just be laid on
> the bathroom floor (which is new green 22mm chipboard). The builder says
> we'd waste heat if we didn't have an insulation pad under the heating
> pad.
>
> Since these two don't get on, I'm left deciding what to do. I'm inclined
> against because the sparks is the pricklier of the two, and I'm a
> coward. More particularly, it would build the floor up too much compared
> to the landing outside the bathroom.
>
> Any opinions?
>
Is your floor slab under the chip insulated?
Even so, chip would offer some insulation itself - not a lot, but it should
allow faster warm up times comapred to trying to heat screed or a slab. But
the energy question is: if it is heating the slab or screed, is the heat
going to be wasted (no slab insulation) or will it stay there and remain
useful...
--
Tim Watts Personal Blog: http://squiddy.blog.dionic.net/
http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage
Reading this on the web? See:
http://wiki.diyfaq.org.uk/index.php?title=Usenet
> Do I need it?
>
> The sparks putting it in says that the heating pad can just be laid on
> the bathroom floor (which is new green 22mm chipboard). The builder says
> we'd waste heat if we didn't have an insulation pad under the heating
> pad.
>
> Since these two don't get on, I'm left deciding what to do. I'm inclined
> against because the sparks is the pricklier of the two, and I'm a
> coward. More particularly, it would build the floor up too much compared
> to the landing outside the bathroom.
>
> Any opinions?
>
Is your floor slab under the chip insulated?
Even so, chip would offer some insulation itself - not a lot, but it should
allow faster warm up times comapred to trying to heat screed or a slab. But
the energy question is: if it is heating the slab or screed, is the heat
going to be wasted (no slab insulation) or will it stay there and remain
useful...
--
Tim Watts Personal Blog: http://squiddy.blog.dionic.net/
http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage
Reading this on the web? See:
http://wiki.diyfaq.org.uk/index.php?title=Usenet
Message has been deleted
mark
Jun 18, 2013, 7:28:20 AM6/18/13
to
"Tim Streater" <timst...@greenbee.net> wrote in message
news:timstreater-6AB6...@news.individual.net...
> Do I need it?
>
> The sparks putting it in says that the heating pad can just be laid on the
> bathroom floor (which is new green 22mm chipboard). The builder says we'd
> waste heat if we didn't have an insulation pad under the heating pad.
>
> Since these two don't get on, I'm left deciding what to do. I'm inclined
> against because the sparks is the pricklier of the two, and I'm a coward.
> More particularly, it would build the floor up too much compared to the
> landing outside the bathroom.
>
> Any opinions?
If I may slightly hi-jack this thread rather than start a new one. I've got
>
> The sparks putting it in says that the heating pad can just be laid on the
> bathroom floor (which is new green 22mm chipboard). The builder says we'd
> waste heat if we didn't have an insulation pad under the heating pad.
>
> Since these two don't get on, I'm left deciding what to do. I'm inclined
> against because the sparks is the pricklier of the two, and I'm a coward.
> More particularly, it would build the floor up too much compared to the
> landing outside the bathroom.
>
> Any opinions?
a similar situation, except mine is over plywood. I'm at the stage where I
need to decide whether or not to install electric underfloor heating in an
en-suite. Floor will be tiled. my question is what additional height will
the underfloor heating cause?
mark
Tim Watts
Jun 18, 2013, 8:00:51 AM6/18/13
to
On Tuesday 18 June 2013 12:11 Tim Streater wrote in uk.d-i-y:
>>
>> Even so, chip would offer some insulation itself - not a lot, but it
>> should allow faster warm up times comapred to trying to heat screed or a
>> slab. But the energy question is: if it is heating the slab or screed, is
>> the heat going to be wasted (no slab insulation) or will it stay there
>> and remain useful...
>
> This is upstairs bathroom with megaflow etc. Lots of pipework under the
>>
>> Even so, chip would offer some insulation itself - not a lot, but it
>> should allow faster warm up times comapred to trying to heat screed or a
>> slab. But the energy question is: if it is heating the slab or screed, is
>> the heat going to be wasted (no slab insulation) or will it stay there
>> and remain useful...
>
> floor, all climaflexed, and also lots of fibreglass insulation under the
> floor in remaining space.
>
Then the builder is taking bollocks - it has all the insulation it needs.
And even if not, the heat will just go downstairs.
Brian Gaff
Jun 18, 2013, 2:08:47 PM6/18/13
to
Could not some kind of thin reflective substance be put there as you can
behind radiators?
Brian
--
From the Sofa of Brian Gaff Reply address is active
"Tim Watts" <tw+u...@dionic.net> wrote in message
news:ekr59a-...@squidward.local.dionic.net...
behind radiators?
Brian
--
From the Sofa of Brian Gaff Reply address is active
"Tim Watts" <tw+u...@dionic.net> wrote in message
news:ekr59a-...@squidward.local.dionic.net...
Brian Gaff
Jun 18, 2013, 2:12:59 PM6/18/13
to
Hijack no 2:
You know when Ivisit people in flats, they usually say, hope the bathroom
was OK only the underfloor heating failed years ago and it would cost too
much to fix it.
Makes me wonder if this scheme is really that good in the long run.
Brian
--
From the Sofa of Brian Gaff Reply address is active
"mark" <ma...@reepham2003.force9.co.uk> wrote in message
news:nY6dnQ35DsGr2V3M...@brightview.co.uk...
You know when Ivisit people in flats, they usually say, hope the bathroom
was OK only the underfloor heating failed years ago and it would cost too
much to fix it.
Makes me wonder if this scheme is really that good in the long run.
Brian
--
From the Sofa of Brian Gaff Reply address is active
news:nY6dnQ35DsGr2V3M...@brightview.co.uk...
Steve Firth
Jun 18, 2013, 2:43:30 PM6/18/13
to
"Brian Gaff" <Bri...@blueyonder.co.uk> wrote:
> Hijack no 2:
> You know when Ivisit people in flats, they usually say, hope the bathroom
> was OK only the underfloor heating failed years ago and it would cost too
> much to fix it.
> Makes me wonder if this scheme is really that good in the long run.
In one house we have hot water underfloor heating. In the other electric.
> Hijack no 2:
> You know when Ivisit people in flats, they usually say, hope the bathroom
> was OK only the underfloor heating failed years ago and it would cost too
> much to fix it.
> Makes me wonder if this scheme is really that good in the long run.
The electric was installed years ago, by me. I have the feeling that
longevity depends on how carefully the element is installed.
--
<•DarWin><|
_/ _/
meow...@care2.com
Jun 19, 2013, 4:58:37 AM6/19/13
to
NT
meow...@care2.com
Jun 19, 2013, 5:01:50 AM6/19/13
to
On Tuesday, June 18, 2013 1:00:51 PM UTC+1, Tim Watts wrote:
> On Tuesday 18 June 2013 12:11 Tim Streater wrote in uk.d-i-y:
> >> Even so, chip would offer some insulation itself - not a lot, but it
> >> should allow faster warm up times comapred to trying to heat screed or a
> >> slab. But the energy question is: if it is heating the slab or screed, is
> >> the heat going to be wasted (no slab insulation) or will it stay there
> >> and remain useful...
> > This is upstairs bathroom with megaflow etc. Lots of pipework under the
> > floor, all climaflexed, and also lots of fibreglass insulation under the
> > floor in remaining space.
> Then the builder is taking bollocks - it has all the insulation it needs.
> And even if not, the heat will just go downstairs.
Correct. But... if you have Gas CH and electric UFH, then letting half the heat go downstairs will raise the bills unnecessarily. Ditto with electric storage heating on economy 7 or similar.
> On Tuesday 18 June 2013 12:11 Tim Streater wrote in uk.d-i-y:
> >> Even so, chip would offer some insulation itself - not a lot, but it
> >> should allow faster warm up times comapred to trying to heat screed or a
> >> slab. But the energy question is: if it is heating the slab or screed, is
> >> the heat going to be wasted (no slab insulation) or will it stay there
> >> and remain useful...
> > This is upstairs bathroom with megaflow etc. Lots of pipework under the
> > floor, all climaflexed, and also lots of fibreglass insulation under the
> > floor in remaining space.
> Then the builder is taking bollocks - it has all the insulation it needs.
> And even if not, the heat will just go downstairs.
NT
polygonum
Jun 19, 2013, 5:47:08 AM6/19/13
to
On 19/06/2013 10:01, meow...@care2.com wrote:
> Correct. But... if you have Gas CH and electric UFH, then letting half the heat go downstairs will raise the bills unnecessarily. Ditto with electric storage heating on economy 7 or similar.
But would half of it go downwards? Or just a small fraction?
> Correct. But... if you have Gas CH and electric UFH, then letting half the heat go downstairs will raise the bills unnecessarily. Ditto with electric storage heating on economy 7 or similar.
My argument would be that you sometimes don't want any extra heating
going downwards (e.g. today) but a touch of warmth to the bathroom floor
might be appreciated, especially if it gets lots of wet on it.
--
Rod
0 new messages