[Greenbuilding] galvalume roofing

[Clarke Olsen]

Compared to what? My steel roof has (had) factory applied paint with a 20 year guarantee. Year 21, paint leapt off the roof.
Of course, it was likely a gradual process, but all that paint went somewhere... Find out what the use on roofs in Bermuda,
where every roof is a catchment.
Clarke Olsen
clarkeolsendesign.com
373 route 203
Spencertown, NY 12165 
USA
518-392-4640
colsen at taconic.net




On Jan 19, 2014, at 9:47 PM, candtcampbell at juno.com wrote:

> Not very long ago on this list there was some discussion that galvalume, or zincalume as it's called in Australia, is the best roof for harvesting rainwater. However, in the US, it seems that all galvalume is coated with acrylic. So I'm wondering what impact that coating has on the water, specifically whether it has any toxicity?
> 
> Tim
> 
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