From: Tony Williams 

Geo wrote:
> "Tony Williams"  wrote in message
> news:439b2f22$1{at}w3.nls.net...
>
>
>>Yes you'd need two versions, one for a cold climate and one for hot. It
>>does answer your original question about why we have dark roofs though:
>>they were designed in cold climates.
>
>
> Really? I just kinda figured it was because tar is black.
>

So is slate - well, the good stuff is anyway. Take a look at houses in warm
climates though and they ofen have flat white roofs. Somehow I doubt it's
by chance.

--
Tony

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