How should I paint my roof white?

solar warm air heating can be installed for hundreds of pounds, and pays back ok if sufficiently well designed.

NT

Reply to
meow2222
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Me of course.

Indeed. The planet will be fine. It coped with the 7C rise in 50years at the end the last ice age - I think I read that in the book Six Degrees - and the plant will cope in some way with what ever we throw at it.

So it's not worth us doing anything?

If you're in a sinking boat do you wait to drown or start bailing and look for a plan B?

Guy

Reply to
Guy Dawson

Unfortunately the boat is already many metres below the surface because of the inertia in the system.

Don

Reply to
Donwill

I cannot find the energy involved in sourcing, transporting and applying reflective paint. Nor the opportunity cost of spending money on that rather than other options. I can specialist paints make sense where the energy would otherwise be removed by conventional air conditioning but for those of us who just pant.....?

In passing, anyone offering odds on the North Koreans arguing that their nuclear programme is geared to solving global warming by carefully applied doses of nuclear winter?

Reply to
neverwas

So it's not worth trying to swim up towards the surface?

Guy

Reply to
Guy Dawson

Don't you mean it's not a coincidence that our visual receptors are optimised to the sun's peak output?

Owain

Reply to
Owain

A negative point against the idea would be having to repaint all the Zebra crossings.

G.Harman

Reply to
damduck-egg

yeah - white and black.

Reply to
PeterC

HTF are you going to keep that clean? :-)

Reply to
The Medway Handyman

Now, where have all those old CDs gone ?

Reply to
geoff

Cover it with aluminium foil - more reflective and it will keep the Martian mind control rays out too.

Colin Bignell

Reply to
nightjar

Bwahahah

In the Mojave desert maybe. Not in e.g.Accrington...

Reply to
The Natural Philosopher

The trick is presumably to not be so busy bailing that you miss plan B altogether :)

Reply to
Jules

Hmm, so I'm already doing my bit by having so many silver birch?

Reply to
Jules

Hope springs eternal..............

Reply to
Donwill

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember Guy Dawson saying something like:

Paint your bottom blue and have done with it. I'm sure that would be as much use.

Reply to
Grimly Curmudgeon

Not if saving the planet is your goal.

What people appear to forget is that we are in an ice age and the normal climate of the Earth is about 15C higher than it is now.

It goes much colder too. We just happen to have evolved during one of the bits in-between.

Reply to
dennis

However, painting our roofs white is not doing something useful. We would need to cover a lot more of the planet with cities before their colour became significant.

Colin Bignell.

Reply to
nightjar

I thought that's what I said? Visible impies our visual receptors have a sensitivity.

Reply to
Fredxx

"nightjar .me.uk>"

I don't know, but at the same time, I haven't seen any figures which relate a Kg of CO2 to KW of atmospheric heat retention.

Given than the sun's energy falling on a roof top is around 1KW, a white roof can contribute a significant return of sunlight back into space, and potential cooling of the ground and consequently, the atmosphere.

Reply to
Fredxx

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