[Greenbuilding] The Myth about the "Cool White Roof" materials

[Gennaro Brooks-Church - Eco Brooklyn]

Interesting. I see that as one more reason to have a green roof. Also,
white, black or green, it doesn't matter to the inside of the building
after a certain amount of insulation.

Gennaro Brooks-Church
Director, Eco Brooklyn Inc.
Cell: 1 347 244 3016 USA
www.EcoBrooklyn.com
22 2nd St; Brooklyn, NY 11231


On Mon, Mar 24, 2014 at 9:56 PM, Clarke Olsen <colsen at fairpoint.net> wrote:

> A dark roof will not absorb any meaningful heat from the brief, shallow
> sun of our discontent. When the sun beats down for those long summer days,
> ay, there's the rub! I recently painted a flat, black EPDM roof with
> brilliantly reflective paint, and the difference was predictable, but still
> amazing. When I put my hand on the newly painted (but dry) part, it felt
> like nothing, but the
> unpainted area was too hot to touch.
> Clarke Olsen
> clarkeolsendesign.com
> 373 route 203
> Spencertown, NY 12165
> USA
> 518-392-4640
> colsen at taconic.net
>
>
>
>
> On Mar 24, 2014, at 7:59 PM, "Bruno M." <brunom1 at telenet.be> wrote:
>
> > If flat roofs are white its assumed that it will safe money because of
> > less heat-load in summer, so less electricity needed to cool that
> house/building. It may also give you good points in LEED etc.
> > The story goes it also helps against the Heat Island effect from / in
> big cities.
> >
> > But is this real and a good thing everywhere,
> > like also in Seattle or NY ?
> >
> > There is indeed an backside on this medal, except for Miami and further
> south laying area's there is also a winter, a cold season where
> > it may be counter productive to have a white roof.
> >
> > Its all in this nice article i stumbled on:
> >
> >
> > http://www.kenilworth.com/publications/cs/de/201311/files/45.html
> >
> >
> >
> > Black is beautiful
> > :-)
> > Bruno M.
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
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