Finishing Concrete basement floors
I know nothing about that product so i do  not know if it is necessary to have the concrete sealed when using the product. Have you read the installation instruction regarding installation on concrete ?

Concrete sealer. (there are many)

Depends on the type of sealer you are using, read the instruction concerning flammability.

Depends on the type of sealer you are using, read the instruction concerning safety precautions and ventilation.


If you have a more specific question then please update.