First you should always wear protection when doing any kind of sanding. And especially not around children.

The tiles could contain it. But the general rule is its safe as long as you are not disturbing it. I.e sanding.

Even though they are cracked it probably isnt an issue. But getting rid of them is a good idea as long as the funds are available.

The 9"X9" tiles almost definitely contain the fiber. They are not dangerous, unless sanded, drilled through, ground up (why would you?) or in some other way pulverized.

Don't worry about it.

Cellulose is not dangerous, unless you work in an industry that makes paper products, you are exposed long-term and repeatedly, or you have lung disease or COPD. In my opinion, casual exposure isn't going to impact anyone's health here.

Great. Thanks for the responses.

I am going to cover the 9x9 tiles.

But when i took up the kitchen floor there was a seam in the middle of the floor where the two peices of plywood met.

It looks like the person used some type of filler/glue over this seam. it covers about 4 inches on either side of the seam and it looks black or dark grey.

Has anyone heard of using cutback glue on seams? its just this dark stuff over top of the seam and am concerned that it might be cutback glue which i hear has asbestos.

I will try to post a picture.

I am going to grab a piece and have it tested but was just wondering if anyone has ever heard of using that for a filler. Or do you think it would be a type of lever compound or something.

Thanks.

this stuff is driving me NUTS!!

Old-timers would mix white gypsum-based filler with black emulsion adhesive to make a flexible seam patch with enhanced adhesive properties. That is what you may have there. If that is so, then nothing to worry about, as black cutback adhesive was never used in that formulation.

You have nothing to worry about anyway.