Algon can scorch plants but under normal usage conditions should not destroy root systems. Care is recommended when using this product to avoid this.

This product is not recommended by the manufacturer to remove black spot

The Algon Organic Path Patio and Decking Cleaner Concentrate will remove leaf stains but it will be fully removed after several applications.

Without knowing exact details it's hard to say, you could contact the manufacturer directly to ask.

Not it is not.

There is nothing on the product to state that this product kills moss this is just a cleaner. Our Chemicals department recommend that you use Job done moss killer 

Yes this can be used on a felt roof, as advised by our Chemicals department 

Hello, no it can't

Hello,

We would advise Wet and Forget