I am planning on pulling up the carpet and padding on my floor- slab on grade. I would like to stain it. Since it is already sealed is too late to stain it?

Thank you

P.S. how to thank the person that responds to your question?

If it has been sealed you Id say its to late, but I'm curious to know how you know its been sealed? Id assume its not been since it has carpent and padding on it,
Id probably try and stain a small section just to see

As far as thanking anyone on here, just click there name and it will give you options to email them or leave them a message.

What's the mans options if he can't stain? Assuming he wants to decorate his concrete... whats he do now? Option?