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topic 10431

Solar Heat Reflective Paint


 

I am looking for a solar heat reflective paint (carc) for a project I am working on - Any Ideas?

Patty MacDonald
- Woodbridge, Virginia


Reflective Roof Coating

Insulating Paint

 

Hi, Patty. My main approach would be to look for white paint rather than black.

But you might also see letter 18535, wherein Dr. Con Lozanovski advises of university tests showing the effectiveness of putting reflective ceramic powder in the paint.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(2006)

Hi A product worth checking out for metal roofs, that I can recommend is Insultec, search for it on the web.

Carl Cristie
- Noosa QLD Australia

----
Ed. note: Could you please tell us who you are and your personal experience with the product, Carl. Thanks!


Solar window film

(2007)

I have a big window on the west side of my office that the sun bakes though in the late afternoon and really heats up the reception room. I would like to know if there is a product that could be painted on the outside of he window that would reflect the suns rays, but be clear enough to see through.

Thanks a bunch!

Ken Alley
consumer - York, Nebraska


April 2007

Hi, Ken. Rather than trying to find a transparent paint that would stick to glass and would cover it at uniform thickness, Ken, the manufacturers tend to offer this as a plastic film instead =>

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


July 11, 2008

My experience has been that the inorganic, mixed metal oxide pigments, in some parts of the globe called "ceramic powder" pigments for paints and coatings are every bit what they claim to be. We are uncertain though about ceramic micro-spheres in paints, whether factory mixed or consumer additive) or the assertion that any paint provides insulation value as some claim. An R value measurement of insulation efficiency is a building industry term only associated with bulk layer, SPF foam, styrofoam. or fiberglass panels that are installed. How can something microns thick provide the same R value of 7 when it takes at least an inch of foam to do the same thing? It makes no sense.

The commercial roofing industry had the mixed metal oxides we use in our paints and coatings over 30 years ago and continues to do so with factory coated, baked-on metal roofing.

The U.S. Dept. Of Energy study finished last year and a University of Nevada (UNLV) completed in 2006 showed very strong energy savings in mixed metal oxide pigmented paints on test homes in multiple cities. Due to their high solar reflectively and thermal emissivity for exterior walls, these found electricity use reductions for air-conditioning of 24% in Las Vegas, 21.9% in Los Angeles, 13% in Sacramento. Walls plus roofs (UNLV Study) so coated. showed a 41% total energy savings measured in reduced KWh consumption.

Michael Biel
coatings company - Sausalito, California



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