If I recall some discussions from LONG ago, Steve's suggestion about waiting
for the initial "roof rinse" before collecting is a good idea.

I believe the concern is less for the shingle ingredients as much as for
what pollutants may have settled on your roof.
--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Artwork, Books and Lots of Free Info!


"Dustin " wrote in message ...
Do any of you collect rainwater to use on your orchids? I want to
collect the rainwater off of the roof of my house. I had to get a new
roof after last summers hurricanes so I have new asphalt shingles and I
am wondering if there is anything toxic in them. Not that a TDS meter
can tell me anything, but the TDS of the rain from my roof is the same
as the rain falling right into a clean bucket.

Dustin