Author Topic: Copper from roof shingles in water  (Read 231 times)

Offline aeaas

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Copper from roof shingles in water
« on: September 10, 2009, 12:03:49 AM »
Hi all, I heard the the shingles on roofs have some sort of copper compound (chromated copper arsenate-CCA) for mold resistance, I confirmed this with the guy who repaired my roof this spring. Just wondering everyone's thoughts regarding whether this should be cause for concern if water collected from the roof is used for watering a vegetable garden.

Here's some further reading:
http://dallasgreenzine.com/?p=136
http://home.comcast.net/~leavesdance/rainbarrels/safety.html