Felt for roofs as weed proof fabric?

i have a big roll of felt left over from the extension and i thought it looks like weed proof fabric, could it work like it or does it have chemicals and stuff in it??

can i use it for anything so??

I don't think I would use it to cover soil - loads of chemicals in it and it would most probably become brittle quite soon in the cold as well as sticky in the heat.

You could go in for making bird-boxes by the dozen or keep an ear open for someone who wants a strip or two for making rabbit hutches...

If there's enough try a swap for something you need instead.
Just a thought.  

It depends on the type of "felt" you mean as most builders now use breathable felt that is not bitumen/tar  based it is white and looks like "wonder web".

http://construction.tyvek.co.uk/Tyvek_Construction/en_GB/index.html

felt i thought was tar based,the other products are membranes and should be fine.

felt is tar based!

It's a sticky subject when it gets warm