From Newsgroup: uk.d-i-y

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of
sun's radiant heat.
2/ Chain drilling out a brick in the loft section of a redundent chimney
to fit a small fan to extract loft heat into the stack and chimney pot,
any cautions relating to breaking through pargetting or whatever?

Have already adopted external to windows African sail shades version of
brieze solar and expanded metal loft access panel for summer. And all
windows closed all day unless at night is cooler oudside than core of building, again with expanded metal mest, as anti fly, mice,rats, burglars.
--
Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
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From Newsgroup: uk.d-i-y

N_Cook <diverse@tcp.co.uk> wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of sun's radiant heat.

Reflective White line paint often has glass beads in it.
DonrCOt see why you could not paint your render with it though it might be fairly expensive .

GH

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From Newsgroup: uk.d-i-y

N_Cook wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of sun's radiant heat.
2/ Chain drilling out a brick in the loft section of a redundent chimney
to fit a small fan to extract loft heat into the stack and chimney pot,
any cautions relating to breaking through pargetting or whatever?

Have already adopted external to windows African sail shades version of brieze solar and expanded metal loft access panel for summer. And all windows closed all day unless at night is cooler oudside than core of building, again with expanded metal mest, as anti fly, mice,rats, burglars.

Putting a fan in a redundant chimney is an interesting idea, but if it
really is redundant then why would you be concerned about the pargeting?
... and chimneys are supposed to be rather good at convection without a fan There's also a consideration of the number of days when it's likely to
be of use, set against the effort to do whatever mitigation strategies
are implemented.
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From Newsgroup: uk.d-i-y

On 24/06/2026 15:50, Sparky wrote:

N_Cook wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength
of sun's radiant heat.
2/ Chain drilling out a brick in the loft section of a redundent
chimney to fit a small fan to extract loft heat into the stack and
chimney pot, any cautions relating to breaking through pargetting or
whatever?

Have already adopted external to windows African sail shades version
of brieze solar and expanded metal loft access panel for summer. And
all windows closed all day unless at night is cooler oudside than core
of building, again with expanded metal mest, as anti fly, mice,rats,
burglars.

Putting a fan in a redundant chimney is an interesting idea, but if it
really is redundant then why would you be concerned about the pargeting?
... and chimneys are supposed to be rather good at convection without a fan There's also a consideration of the number of days when it's likely to
be of use, set against the effort to do whatever mitigation strategies
are implemented.

I'd got the impression that chimney lining pargetting was very hard,
perhaps cooked by earlier decades of coal smoke and I could forsee huge
slabs of it falling down the stack.
There is an existing sliding vent panel in the upstairs part of the
stack, presumably blocked up fireplace, but its the loft , with no vent
that gets fiercely hot
--
Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
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From Newsgroup: uk.d-i-y

On 24/06/2026 15:45, Marland wrote:

N_Cook <diverse@tcp.co.uk> wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of
sun's radiant heat.

Reflective White line paint often has glass beads in it.
DonrCOt see why you could not paint your render with it though it might be fairly expensive .

GH

Road line paint seems to need applying hot, presumably for traffic wear reasons.
--
Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
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From Newsgroup: uk.d-i-y

N_Cook <diverse@tcp.co.uk> wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of sun's radiant heat.

I saw something that said a mirror finish was only 5% more reflective than white paint. Paint is cheap, so...

Theo
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From Newsgroup: uk.d-i-y

On 24/06/2026 15:17, N_Cook wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of sun's radiant heat.
2/ Chain drilling out a brick in the loft section of a redundent chimney
to fit a small fan to extract loft heat into the stack and chimney pot,
any cautions relating to breaking through pargetting or whatever?

Have already adopted external to windows African sail shades version of brieze solar and expanded metal loft access panel for summer. And all windows closed all day unless at night is cooler oudside than core of building, again with expanded metal mest, as anti fly, mice,rats, burglars.

Golly.

I just have a massive concrete ground floor and several years in Johannesburg.

A cold beer is cheaper
--
If I had all the money I've spent on drink...
..I'd spend it on drink.

Sir Henry (at Rawlinson's End)

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From Newsgroup: uk.d-i-y

On 24/06/2026 16:29, Theo wrote:

N_Cook <diverse@tcp.co.uk> wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of
sun's radiant heat.

I saw something that said a mirror finish was only 5% more reflective than white paint. Paint is cheap, so...

Theo

I was about to say similar. White is amazingly reflective. Abnd cheap
--
In todays liberal progressive conflict-free education system, everyone
gets full Marx.

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From Newsgroup: uk.d-i-y

On 24/06/2026 15:17, N_Cook wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of sun's radiant heat.

Pleased to report that cladding spaced of 25mm from 60mm foil faced
celotex seems to be doing a pretty good job so far :-)

2/ Chain drilling out a brick in the loft section of a redundent chimney
to fit a small fan to extract loft heat into the stack and chimney pot,
any cautions relating to breaking through pargetting or whatever?

Might be a problem if the chimney ever gets used for its intended
purpose in the future.

There is also the issue of pumping out air that needs to get replaced
from outside - sometimes that can work against you. Perhaps a bit of intelligent control to choose the direction of most cooling would be
useful.
--
Cheers,

John.

/=================================================================\
| Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk | \=================================================================/
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From Newsgroup: uk.d-i-y

On Wed, 24 Jun 2026 15:17:03 +0100, N_Cook wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of
sun's radiant heat.
2/ Chain drilling out a brick in the loft section of a redundent chimney
to fit a small fan to extract loft heat into the stack and chimney pot,
any cautions relating to breaking through pargetting or whatever?

Have already adopted external to windows African sail shades version of brieze solar and expanded metal loft access panel for summer. And all
windows closed all day unless at night is cooler oudside than core of building, again with expanded metal mest, as anti fly, mice,rats,
burglars.

Awnings over windows, and sash windows.
--- Synchronet 3.22a-Linux NewsLink 1.2

From Newsgroup: uk.d-i-y

On 25/06/2026 18:57, Jethro wrote:

On Wed, 24 Jun 2026 15:17:03 +0100, N_Cook wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of
sun's radiant heat.
2/ Chain drilling out a brick in the loft section of a redundent chimney
to fit a small fan to extract loft heat into the stack and chimney pot,
any cautions relating to breaking through pargetting or whatever?

Have already adopted external to windows African sail shades version of
brieze solar and expanded metal loft access panel for summer. And all
windows closed all day unless at night is cooler oudside than core of
building, again with expanded metal mest, as anti fly, mice,rats,
burglars.

Awnings over windows, and sash windows.

Like the usual brieze solaire, only intercepts the midday sun.
My "African" sail shades cover the whole windows upstairs and separately downstairs for midday afternoon and evening , with dark woven material a
foot or more away from the glass.
Amazing how hot the material gets in full sun, too hot too touch
comfortably. The gap and open weave to let any wind , take it away,
apparently the wrong wavelentgth by then to penetrate the glass to any
great extent.
I keep forgetting to test the glass temperature with a non-contact IR thermometer in full sun.
Half the people around me have closed sun-facing curtains , vertical and venetian blinds, but internal to the glass which barely works I'd have thought. The shutters or cloth need to be on the outside.
--
Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
--- Synchronet 3.22a-Linux NewsLink 1.2

From Newsgroup: uk.d-i-y

On 25/06/2026 19:21, N_Cook wrote:

On 25/06/2026 18:57, Jethro wrote:

On Wed, 24 Jun 2026 15:17:03 +0100, N_Cook wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of
sun's radiant heat.
2/ Chain drilling out a brick in the loft section of a redundent chimney >>> to fit a small fan to extract loft heat into the stack and chimney pot,
any cautions relating to breaking through pargetting or whatever?

Have already adopted external to windows African sail shades version of
brieze solar and expanded metal loft access panel for summer. And all
windows closed all day unless at night is cooler oudside than core of
building, again with expanded metal mest, as anti fly, mice,rats,
burglars.

Awnings over-a windows, and sash windows.

Like the usual brieze solaire, only intercepts the midday sun.
My "African" sail shades cover the whole windows upstairs and separately downstairs for midday afternoon and evening , with dark woven material a foot or more away from the glass.
Amazing how hot the material gets in full sun, too hot too touch comfortably. The gap and open weave to let any wind , take it away, apparently the wrong wavelentgth by then to penetrate the glass to any
great extent.
I keep forgetting to test the glass temperature with a non-contact IR thermometer in full sun.
Half the people around me have closed sun-facing curtains , vertical and venetian blinds, but internal to the glass which barely works I'd have thought. The shutters or cloth need to be on the outside.

If the air gap between window and curtain is reaosnably well sealed, it creates an insulating barrier
--
rCLThe fundamental cause of the trouble in the modern world today is that
the stupid are cocksure while the intelligent are full of doubt."

- Bertrand Russell


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From Newsgroup: uk.d-i-y

On 24/06/2026 15:17, N_Cook wrote:

<snip>

peak infra-red wavelength of sun's radiant heat.

You do realise the colour for peak energy from the sun is nominally green?

https://en.wikipedia.org/wiki/Sunlight

"the power spectral density of sunlight peaks at a wavelength of about
501 nm, which is in the visible range."

After reading the article you'll find YMMV!
--- Synchronet 3.22a-Linux NewsLink 1.2

From Newsgroup: uk.d-i-y

On 25/06/2026 19:21, N_Cook wrote:

On 25/06/2026 18:57, Jethro wrote:

On Wed, 24 Jun 2026 15:17:03 +0100, N_Cook wrote:

1/ There must be something more hi-tech than white masonry paint to
repaint the render. I'm thinking of the reflective glass beads on road
signs and number plates, but optimised for peak infra-red wavelength of
sun's radiant heat.
2/ Chain drilling out a brick in the loft section of a redundent chimney >>> to fit a small fan to extract loft heat into the stack and chimney pot,
any cautions relating to breaking through pargetting or whatever?

Have already adopted external to windows African sail shades version of
brieze solar and expanded metal loft access panel for summer. And all
windows closed all day unless at night is cooler oudside than core of
building, again with expanded metal mest, as anti fly, mice,rats,
burglars.

Awnings over windows, and sash windows.

Like the usual brieze solaire, only intercepts the midday sun.
My "African" sail shades cover the whole windows upstairs and separately downstairs for midday afternoon and evening , with dark woven material a
foot or more away from the glass.
Amazing how hot the material gets in full sun, too hot too touch
comfortably. The gap and open weave to let any wind , take it away, apparently the wrong wavelentgth by then to penetrate the glass to any
great extent.
I keep forgetting to test the glass temperature with a non-contact IR thermometer in full sun.
Half the people around me have closed sun-facing curtains , vertical and venetian blinds, but internal to the glass which barely works I'd have thought. The shutters or cloth need to be on the outside.

16:30 today and IR thermometer. Less heat and more wind today and the
room temperature only had a chance of lowering obvernight from 29
yesterday peak to 28 today. The indoor window glass temp was 29 deg C
and the sail shade outside in full sun was quite uniform 39 deg C around
the centre
--
Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
--- Synchronet 3.22a-Linux NewsLink 1.2

From Newsgroup: uk.d-i-y

On 26/06/2026 17:06, N_Cook wrote:

16:30 today and IR thermometer. Less heat and more wind today and the
room temperature only had a chance of lowering obvernight from 29
yesterday peak to 28 today. The indoor window glass temp was 29 deg C
and the sail shade outside in full sun was quite uniform 39 deg C around
the centre

Hottest yet in E Anglia. I went shopping n +36-#C and Waitrose car park
was positively nostalgicly African.

My cape town sister has her wood burning stove going

I shit the windows and drew the curtains and kept the inside upstairs
down to 31-#C

Even the normally cool living room with its massive open fireplace and
solid concrete floors made it to 27...

It really is quite pleasant all in all. After a miserably cold winter
--
Truth welcomes investigation because truth knows investigation will lead
to converts. It is deception that uses all the other techniques.

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From Newsgroup: uk.d-i-y

On Fri, 26 Jun 2026 17:49:46 +0100, The Natural Philosopher wrote:

On 26/06/2026 17:06, N_Cook wrote:

[quoted text muted]

Hottest yet in E Anglia. I went shopping n +36-#C and Waitrose car park
was positively nostalgicly African.

Very big, Africa.

Nairobi was idyllic. Being a mile up helps, I believe ?

Watamu on the east coast - a hell hole.
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From Newsgroup: uk.d-i-y

On 26/06/2026 18:03, Jethro wrote:

On Fri, 26 Jun 2026 17:49:46 +0100, The Natural Philosopher wrote:

On 26/06/2026 17:06, N_Cook wrote:

[quoted text muted]

Hottest yet in E Anglia. I went shopping n +36-#C and Waitrose car park
was positively nostalgicly African.

Very big, Africa.

Nairobi was idyllic. Being a mile up helps, I believe ?

Watamu on the east coast - a hell hole.

Even S Africa had 4 distinct climate zones. High veldt, Low veldt.,
desert, and Mediterranean.

I lived on the high veldt. 5000' ASL. 87 octane petrol. Gutless cars.
Hot and dry in summer, with a massive thunderstorm every second day, and
cold and dry in winter

Even Africans didn't like Durban. 35-#C and 100% humidity. That's why its
full of Indians from e,g. Goa.
--
Microsoft : the best reason to go to Linux that ever existed.

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From Newsgroup: uk.d-i-y

On 26/06/2026 in message <111maja$ln8p$5@dont-email.me> The Natural Philosopher wrote:

I shit the windows and drew the curtains and kept the inside upstairs down >to 31-#C

Is that effective in keeping the sun out?
--
Jeff Gaines Dorset UK
That's an amazing invention but who would ever want to use one of them? (President Hayes speaking to Alexander Graham Bell on the invention of the telephone)
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From Newsgroup: uk.d-i-y

On 26/06/2026 17:49, The Natural Philosopher wrote:

On 26/06/2026 17:06, N_Cook wrote:

16:30 today and IR thermometer. Less heat and more wind today and the
room temperature only had a chance of lowering obvernight from 29
yesterday peak to 28 today. The indoor window glass temp was 29 deg C
and the sail shade outside in full sun was quite uniform 39 deg C
around the centre

Hottest yet in E Anglia. I went shopping n +36-#C and Waitrose car park
was positively nostalgicly African.

My cape town sister has her wood burning stove going

I shit the windows and drew the curtains and kept the inside upstairs
down to 31-#C

Your rectum and your toilet must be HUGE! :-)

--- Synchronet 3.22a-Linux NewsLink 1.2

From Newsgroup: uk.d-i-y

On 26/06/2026 19:08, Jeff Gaines wrote:

On 26/06/2026 in message <111maja$ln8p$5@dont-email.me> The Natural Philosopher wrote:

I shit the windows and drew the curtains and kept the inside upstairs
down to 31-#C

Is that effective in keeping the sun out?

well generally speaking sun does not shine into rectums :-)
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From Newsgroup: uk.d-i-y

On 26/06/2026 19:08, Jeff Gaines wrote:

On 26/06/2026 in message <111maja$ln8p$5@dont-email.me> The Natural Philosopher wrote:

I shit the windows and drew the curtains and kept the inside upstairs
down to 31-#C

Is that effective in keeping the sun out?

Absolutely. ;-)
--
rCLThe ultimate result of shielding men from the effects of folly is to
fill the world with fools.rCY

Herbert Spencer

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