My basement floor had tiles that turned out to have some asbestos content. I didn't realize what I was dealing with until I had almost completely removed the tiles. I'm left with 'black mastic' on the concrete that may or may not contain asbestos.
I'm planning on re-finishing the basement and adding carpet soon, but not until I have some waterproofing done. In the meantime, I'd like to cover/seal the mastic to prevent any potential asbestos from becoming airborne.
I had two ideas:
1. Put down some cheap self-stick tiles
2. Paint with a floor paint.

Anyone know what will happen if I try to paint over the mastic? Painting would obviously be cheaper, and since this is just a temporary measure, I'd like to keep it cheap and simple!

Thanks for any advice!