If you can prove that it is not toxic mold that will limit her future claims.  

The call takes 60 seconds, and even if only 1 in 50 is interested in selling, you would do well.Even though it only takes 15 seconds to say "no thanks" and hang up, it is irritating to receive calls like this.

My name is Heather and I am looking into REI to help people have environmentally safe places to live.From 2007-2011, my family lived in a home with hidden toxic mold in the walls.

He was exceptionally irritated (made a note that I "wasted his time"), which will likely hurt his impression of our project later and could make things more difficult for us. 

Too much copper is toxic to plants because it prevents photosynthesis.https://homeguides.sfgate.com/copper-control-algae-97682.htmlThat said you should get the roof inspected.You may get lucky, the roof may be in great shape other than the algae on it ( note there are shingle solvents designed to wash off roofs: don’t bleach ( bleach is ineffective against mold) or power wash.)Once cleaned, install the copper as a preventative measure.Other wise I agree with many of the comments, you might have to bite the bullet on the roof, a roof is a big deal to perspective buyers.

At first glance, you might not consider a company such as that as HI, but since toxic chemicals are used in the manufacturing process, it would be.The obvious downside to a HI business/property are the environmental concerns.

The cash flows can be very slim when starting out, not to mention, one person always feels like they do all the work and they begin to get irritated.

Hedge funds will benefit from government plans to remove toxic assets from the books of crippled financial institutions.

This irritated me very much, b/c he also hadn't been great about timely following up with me on other issues, then he drops this on me.

>> A federal jury Friday awarded more than $100 million to 10 workers who claimed they were injured in 2007 when a toxic substance was released at BP <<I bet I know which posters released that 'toxic substance' !!!.....